Articles | Volume 4, issue 1
https://doi.org/10.5194/gchron-4-373-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-4-373-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Simulating sedimentary burial cycles – Part 2: Elemental-based multikinetic apatite fission-track interpretation and modelling techniques illustrated using examples from northern Yukon
Dale R. Issler
CORRESPONDING AUTHOR
Natural Resources Canada, Geological Survey of Canada, Calgary, AB
T2L 2A7, Canada
Kalin T. McDannell
Department of Earth Sciences, Dartmouth College, Hanover, NH 03755,
USA
Paul B. O'Sullivan
GeoSep Services, Moscow, ID 83843, United States
Larry S. Lane
Natural Resources Canada, Geological Survey of Canada, Calgary, AB
T2L 2A7, Canada
Related authors
Kalin T. McDannell and Dale R. Issler
Geochronology, 3, 321–335, https://doi.org/10.5194/gchron-3-321-2021, https://doi.org/10.5194/gchron-3-321-2021, 2021
Short summary
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We generated a synthetic dataset applying published kinetic models and distinct annealing kinetics for the apatite fission track and (U–Th)/He methods using a predetermined thermal history. We then tested how well the true thermal history could be recovered under different data interpretation schemes and geologic constraint assumptions using the Bayesian QTQt software. Our results demonstrate that multikinetic data increase time–temperature resolution and can constrain complex thermal histories.
Kalin T. McDannell and C. Brenhin Keller
Geochronology Discuss., https://doi.org/10.5194/gchron-2024-3, https://doi.org/10.5194/gchron-2024-3, 2024
Preprint under review for GChron
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We introduce a new statistical method for determining the time of "peak cooling" in thermochronological inversions. Specifically, we focus on the time-temperature paths that intersect the half-maximum cooling isotherm, signifying the zenith or most rapid cooling within a defined interval. The resultant interpolated time distribution provides a systematic metric, particularly applicable for evaluating model cooling characterized by relatively smooth histories featuring a single inflection point.
Kalin T. McDannell and Dale R. Issler
Geochronology, 3, 321–335, https://doi.org/10.5194/gchron-3-321-2021, https://doi.org/10.5194/gchron-3-321-2021, 2021
Short summary
Short summary
We generated a synthetic dataset applying published kinetic models and distinct annealing kinetics for the apatite fission track and (U–Th)/He methods using a predetermined thermal history. We then tested how well the true thermal history could be recovered under different data interpretation schemes and geologic constraint assumptions using the Bayesian QTQt software. Our results demonstrate that multikinetic data increase time–temperature resolution and can constrain complex thermal histories.
Related subject area
Geochronological data analysis/statistics/modelling
An optimization tool for identifying multiple-diffusion domain model parameters
Technical note: RA138 calcite U–Pb LA-ICP-MS primary reference material
Revising chronological uncertainties in marine archives using global anthropogenic signals: a case study on the oceanic 13C Suess effect
The daughter–parent plot: a tool for analyzing thermochronological data
Errorchrons and anchored isochrons in IsoplotR
Short communication: Resolving the discrepancy between U–Pb age estimates for the “Likhall” bed, a key level in the Ordovician timescale
In-situ Rb-Sr geochronology of white mica in young metamafic and metasomatic rocks from Syros: testing the limits of LA-ICP-MS/MS mica dating using different anchoring approaches
Navigating the complexity of detrital rutile provenance: methodological insights from the Neotethys Orogen in Anatolia
Solving crustal heat transfer for thermochronology using physics-informed neural networks
Interpreting cooling dates and histories from laser ablation in-situ (U-Th-Sm)/He thermochronometry
Minimizing the effects of Pb loss in detrital and igneous U–Pb zircon geochronology by CA-LA-ICP-MS
Short Communication: Nanoscale heterogeneity of U and Pb in baddeleyite – implications for nanogeochronology and 238U series alpha recoil effects
Modeling apparent Pb loss in zircon U–Pb geochronology
Calibration methods for laser ablation Rb–Sr geochronology: comparisons and recommendation based on NIST glass and natural reference materials
Short communication: The Wasserstein distance as a dissimilarity metric for comparing detrital age spectra and other geological distributions
ChronoLorica: introduction of a soil–landscape evolution model combined with geochronometers
Technical note: colab_zirc_dims: a Google Colab-compatible toolset for automated and semi-automated measurement of mineral grains in laser ablation–inductively coupled plasma–mass spectrometry images using deep learning models
Calculation of uncertainty in the (U–Th) ∕ He system
Bayesian age–depth modelling applied to varve and radiometric dating to optimize the transfer of an existing high-resolution chronology to a new composite sediment profile from Holzmaar (West Eifel Volcanic Field, Germany)
Short communication: age2exhume – a MATLAB/Python script to calculate steady-state vertical exhumation rates from thermochronometric ages and application to the Himalaya
U and Th content in magnetite and Al spinel obtained by wet chemistry and laser ablation methods: implication for (U–Th) ∕ He thermochronometer
In situ LA-ICPMS U–Pb dating of sulfates: applicability of carbonate reference materials as matrix-matched standards
An algorithm for U–Pb geochronology by secondary ion mass spectrometry
Technical note: Rapid phase identification of apatite and zircon grains for geochronology using X-ray micro-computed tomography
sandbox – creating and analysing synthetic sediment sections with R
Improving age–depth relationships by using the LANDO (“Linked age and depth modeling”) model ensemble
How many grains are needed for quantifying catchment erosion from tracer thermochronology?
Short communication: Inverse isochron regression for Re–Os, K–Ca and other chronometers
Technical note: Analytical protocols and performance for apatite and zircon (U–Th) ∕ He analysis on quadrupole and magnetic sector mass spectrometer systems between 2007 and 2020
Simulating sedimentary burial cycles – Part 1: Investigating the role of apatite fission track annealing kinetics using synthetic data
The closure temperature(s) of zircon Raman dating
On the treatment of discordant detrital zircon U–Pb data
An evaluation of Deccan Traps eruption rates using geochronologic data
geoChronR – an R package to model, analyze, and visualize age-uncertain data
Development of a multi-method chronology spanning the Last Glacial Interval from Orakei maar lake, Auckland, New Zealand
Robust isochron calculation
Resolving the timescales of magmatic and hydrothermal processes associated with porphyry deposit formation using zircon U–Pb petrochronology
Seasonal deposition processes and chronology of a varved Holocene lake sediment record from Chatyr Kol lake (Kyrgyz Republic)
Unifying the U–Pb and Th–Pb methods: joint isochron regression and common Pb correction
Exploring the advantages and limitations of in situ U–Pb carbonate geochronology using speleothems
Andrew L. Gorin, Joshua M. Gorin, Marie Bergelin, and David L. Shuster
Geochronology, 6, 521–540, https://doi.org/10.5194/gchron-6-521-2024, https://doi.org/10.5194/gchron-6-521-2024, 2024
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The multiple-diffusion domain (MDD) model quantifies the temperature dependence of noble gas diffusivity in minerals. However, current methods for tuning MDD parameters can yield biased results, leading to underestimates of sample temperatures through geologic time. Our "MDD Tool Kit" software optimizes all MDD parameters simultaneously, overcoming these biases. We then apply this software to a previously published 40Ar/39Ar dataset (Wong, 2023) to showcase its efficacy.
Marcel Guillong, Elias Samankassou, Inigo A. Müller, Dawid Szymanowski, Nathan Looser, Lorenzo Tavazzani, Óscar Merino-Tomé, Juan R. Bahamonde, Yannick Buret, and Maria Ovtcharova
Geochronology, 6, 465–474, https://doi.org/10.5194/gchron-6-465-2024, https://doi.org/10.5194/gchron-6-465-2024, 2024
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RA138 is a new reference material for U–Pb dating of carbonate samples via laser ablation inductively coupled plasma mass spectrometry. RA138 exhibits variable U–Pb ratios and consistent U content, resulting in a precise isochron with low uncertainty. Isotope dilution thermal ionization mass spectrometry analyses fix a reference age of 321.99 ± 0.65 Ma. This research advances our ability to date carbonate samples accurately, providing insights into geological processes and historical timelines.
Nil Irvalı, Ulysses S. Ninnemann, Are Olsen, Neil L. Rose, David J. R. Thornalley, Tor L. Mjell, and François Counillon
Geochronology, 6, 449–463, https://doi.org/10.5194/gchron-6-449-2024, https://doi.org/10.5194/gchron-6-449-2024, 2024
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Marine sediments are excellent archives for reconstructing past changes in climate and ocean circulation. Yet, dating uncertainties, particularly during the 20th century, pose major challenges. Here we propose a novel chronostratigraphic approach that uses anthropogenic signals, such as the oceanic 13C Suess effect and spheroidal carbonaceous fly-ash particles, to reduce age model uncertainties in high-resolution marine archives over the 20th century.
Birk Härtel and Eva Enkelmann
Geochronology, 6, 429–448, https://doi.org/10.5194/gchron-6-429-2024, https://doi.org/10.5194/gchron-6-429-2024, 2024
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We present a new data analysis workflow for thermochronological data based on plots of radiogenic daughter vs. radioactive parent concentration. The daughter–parent relationship helps to identify the sources of age variation. Our workflow classifies the daughter–parent relationship and provides further suggestions, e.g., if a dataset can be described by a sample age and which type of sample age to report. We also introduce Incaplot, which is software for creating daughter–parent plots.
Pieter Vermeesch
Geochronology, 6, 397–407, https://doi.org/10.5194/gchron-6-397-2024, https://doi.org/10.5194/gchron-6-397-2024, 2024
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The age of some geological materials can be estimated from the ratio of certain radiogenic "daughter" isotopes to their radioactive "parent". However, in many cases, the age estimation process is complicated by the presence of an inherited component of non-radiogenic daughter isotopes. This paper presents an improved algorithm to estimate the radiogenic and non-radiogenic components, either separately or jointly.
André Navin Paul, Anders Lindskog, and Urs Schaltegger
Geochronology, 6, 325–335, https://doi.org/10.5194/gchron-6-325-2024, https://doi.org/10.5194/gchron-6-325-2024, 2024
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The “Likhall” bed helps to constrain the timing of increased meteorite bombardment of the Earth during the Ordovician period. It is important to understand the timing of this meteorite bombardment when attempting to correlate it with biodiversity changes during the Ordovician period. Calibrating a good age for the “Likhall” bed is, however, challenging and benefited in this study from advances in sample preparation.
Jesús Muñoz-Montecinos, Andrea Giuliani, Senan Oesch, Silvia Volante, Bradley Peters, and Whitney Behr
Geochronology Discuss., https://doi.org/10.5194/gchron-2024-16, https://doi.org/10.5194/gchron-2024-16, 2024
Revised manuscript accepted for GChron
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Dating the roots of plate boundaries is essential for understanding geologic processes, but geochemical limitations, particularly in young mafic rocks, make this challenging. Advancements in mass spectrometry now enable high-resolution analysis of micro-domains. We assess these limitations by dating rocks from Syros Island. Multi-phase mineral analysis improve age uncertainty by sixfold. We emphasize the importance of the local geologic context and propose strategies to mitigate uncertainties.
Megan A. Mueller, Alexis Licht, Andreas Möller, Cailey B. Condit, Julie C. Fosdick, Faruk Ocakoğlu, and Clay Campbell
Geochronology, 6, 265–290, https://doi.org/10.5194/gchron-6-265-2024, https://doi.org/10.5194/gchron-6-265-2024, 2024
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Sedimentary provenance refers to the study of the origin of sedimentary rocks, tracing where sediment particles originated. Common sedimentary provenance techniques struggle to track mafic igneous and metamorphic rock sources and rutile forms in these rock types. We use rutile form ancient sedimentary rocks in Türkiye to present new recommendations and workflows for integrating rutile U–Pb ages and chemical composition into an accurate sedimentary provenance reconstruction.
Ruohong Jiao, Shengze Cai, and Jean Braun
Geochronology, 6, 227–245, https://doi.org/10.5194/gchron-6-227-2024, https://doi.org/10.5194/gchron-6-227-2024, 2024
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We demonstrate a machine learning method to estimate the temperature changes in the Earth's crust over time. The method respects physical laws and conditions imposed by users. By using observed rock cooling ages as constraints, the method can be used to estimate the tectonic and landscape evolution of the Earth. We show the applications of the method using a synthetic rock uplift model in 1D and an evolution model of a real mountain range in 3D.
Christoph Glotzbach and Todd A. Ehlers
Geochronology Discuss., https://doi.org/10.5194/gchron-2024-12, https://doi.org/10.5194/gchron-2024-12, 2024
Revised manuscript accepted for GChron
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The (U-Th)/He dating method helps understand rock’s cooling history. Synthetic modeling experiments were conducted to explore factors affecting in-situ vs. whole-grain (U-Th)/He dates. In-situ dates are often 30 % older than whole-grain dates, whereas very rapid cooling makes helium loss negligible, resulting in similar whole-grain and in-situ dates. In addition, in-situ data can reveal cooling histories even from a single grain by measuring helium distributions.
Erin E. Donaghy, Michael P. Eddy, Federico Moreno, and Mauricio Ibañez-Mejia
Geochronology, 6, 89–106, https://doi.org/10.5194/gchron-6-89-2024, https://doi.org/10.5194/gchron-6-89-2024, 2024
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Chemical abrasion (CA) is a technique that reduces or eliminates the effects of Pb loss in zircon U–Pb geochronology. However, CA has yet to be applied to large-n detrital zircon (DZ) analyses. We show that CA does not negatively impact or systematically bias U–Pb dates, improves the resolution of age populations defined by 206Pb/238U dates, and increases the percentage of concordant analyses in age populations defined by 207Pb/206Pb dates.
Steven Denyszyn, Donald W. Davis, and Denis Fougerouse
Geochronology Discuss., https://doi.org/10.5194/gchron-2024-4, https://doi.org/10.5194/gchron-2024-4, 2024
Revised manuscript accepted for GChron
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Decay of U to Pb in the mineral baddeleyite is used for precisely dating mafic rocks, but some daughter Pb atoms can be ejected out of the crystal, resulting in an age that appears too young. Atom Probe Tomography was used to map the distribution of U and Pb atoms in 3 dimensions within a baddeleyite crystal and estimate the average distance that Pb atoms are displaced by decay of U. This allows us to correct the measured age on a baddeleyite crystal knowing its size and shape.
Glenn R. Sharman and Matthew A. Malkowski
Geochronology, 6, 37–51, https://doi.org/10.5194/gchron-6-37-2024, https://doi.org/10.5194/gchron-6-37-2024, 2024
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The mineral zircon is widely used to determine the age of rocks based on the radioactive decay of U to Pb, but the measured U–Pb date can be too young if the zircon loses Pb. We present a method for estimating the distribution of apparent Pb loss by mathematical convolution. Applying this approach to 10 samples illustrates contrasting patterns of apparent Pb loss. This study highlights the importance of quantifying Pb loss to better understand its potential effects on zircon U–Pb dates.
Stijn Glorie, Sarah E. Gilbert, Martin Hand, and Jarred C. Lloyd
Geochronology, 6, 21–36, https://doi.org/10.5194/gchron-6-21-2024, https://doi.org/10.5194/gchron-6-21-2024, 2024
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Radiometric dating methods, involving laser ablation as the sample introduction, require robust calibrations to reference materials with similar ablation properties to the analysed samples. In the case of the rubidium–strontium dating method, calibrations are often conducted to nano powder with different ablation characteristics than the crystalline minerals. We describe the limitations of this approach and recommend an alternative calibration method involving natural minerals.
Alex Lipp and Pieter Vermeesch
Geochronology, 5, 263–270, https://doi.org/10.5194/gchron-5-263-2023, https://doi.org/10.5194/gchron-5-263-2023, 2023
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We propose using the Wasserstein-2 distance (W2) as an alternative to the widely used Kolmogorov–Smirnov (KS) statistic for analysing distributional data in geochronology. W2 measures the horizontal distance between observations, while KS measures vertical differences in cumulative distributions. Using case studies, we find that W2 is preferable in scenarios where the absolute age differences in observations provide important geological information. W2 has been added to the R package IsoplotR.
W. Marijn van der Meij, Arnaud J. A. M. Temme, Steven A. Binnie, and Tony Reimann
Geochronology, 5, 241–261, https://doi.org/10.5194/gchron-5-241-2023, https://doi.org/10.5194/gchron-5-241-2023, 2023
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We present our model ChronoLorica. We coupled the original Lorica model, which simulates soil and landscape evolution, with a geochronological module that traces cosmogenic nuclide inventories and particle ages through simulations. These properties are often measured in the field to determine rates of landscape change. The coupling enables calibration of the model and the study of how soil, landscapes and geochronometers change under complex boundary conditions such as intensive land management.
Michael C. Sitar and Ryan J. Leary
Geochronology, 5, 109–126, https://doi.org/10.5194/gchron-5-109-2023, https://doi.org/10.5194/gchron-5-109-2023, 2023
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We developed code to automatically and semi-automatically measure dimensions of detrital mineral grains in reflected-light images saved at laser ablation–inductively coupled plasma–mass spectrometry facilities that use Chromium targeting software. Our code uses trained deep learning models to segment grain images with greater accuracy than is achievable using other segmentation techniques. We implement our code in Jupyter notebooks which can also be run online via Google Colab.
Peter E. Martin, James R. Metcalf, and Rebecca M. Flowers
Geochronology, 5, 91–107, https://doi.org/10.5194/gchron-5-91-2023, https://doi.org/10.5194/gchron-5-91-2023, 2023
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There is currently no standardized method of performing uncertainty propagation in the (U–Th) / He system, causing data interpretation difficulties. We present two methods of uncertainty propagation and describe free, open-source software (HeCalc) to apply them. Compilation of real data using only analytical uncertainty as well as 2 % and 5 % uncertainties in FT yields respective median relative date uncertainties of 2.9 %, 3.3 %, and 5.0 % for apatites and 1.7 %, 3.3 %, and 5.0 % for zircons.
Stella Birlo, Wojciech Tylmann, and Bernd Zolitschka
Geochronology, 5, 65–90, https://doi.org/10.5194/gchron-5-65-2023, https://doi.org/10.5194/gchron-5-65-2023, 2023
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Sediment cores from the volcanic lake Holzmaar provide a very precise chronology based on tree-ring-like annual laminations or varves. We statistically combine this varve chronology with radiometric dating and tested three different methods to upgrade the age–depth model. However, only one of the three methods tested improved the dating accuracy considerably. With this work, an overview of different age integration methods is discussed and made available for increased future demands.
Peter van der Beek and Taylor F. Schildgen
Geochronology, 5, 35–49, https://doi.org/10.5194/gchron-5-35-2023, https://doi.org/10.5194/gchron-5-35-2023, 2023
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Thermochronometric data can provide unique insights into the patterns of rock exhumation and the driving mechanisms of landscape evolution. Several well-established thermal models allow for a detailed exploration of how cooling rates evolved in a limited area or along a transect, but more regional analyses have been challenging. We present age2exhume, a thermal model that can be used to rapidly provide a synoptic overview of exhumation rates from large regional thermochronologic datasets.
Marianna Corre, Arnaud Agranier, Martine Lanson, Cécile Gautheron, Fabrice Brunet, and Stéphane Schwartz
Geochronology, 4, 665–681, https://doi.org/10.5194/gchron-4-665-2022, https://doi.org/10.5194/gchron-4-665-2022, 2022
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This study is focused on the accurate measurement of U and Th by wet chemistry and laser ablation methods to improve (U–Th)/He dating of magnetite and spinel. The low U–Th content and the lack of specific U–Th standards significantly limit the accuracy of (U–Th)/He dating. Obtained U–Th results on natural and synthetic magnetite and aluminous spinel samples analyzed by wet chemistry methods and LA-ICP-MS sampling have important implications for the (U–Th)/He method and dates interpretation.
Aratz Beranoaguirre, Iuliana Vasiliev, and Axel Gerdes
Geochronology, 4, 601–616, https://doi.org/10.5194/gchron-4-601-2022, https://doi.org/10.5194/gchron-4-601-2022, 2022
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U–Pb dating by the in situ laser ablation mass spectrometry (LA-ICPMS) technique requires reference materials of the same nature as the samples to be analysed. Here, we have explored the suitability of using carbonate materials as a reference for sulfates, since there is no sulfate reference material. The results we obtained are satisfactory, and thus, from now on, the sulfates can also be analysed.
Pieter Vermeesch
Geochronology, 4, 561–576, https://doi.org/10.5194/gchron-4-561-2022, https://doi.org/10.5194/gchron-4-561-2022, 2022
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Secondary ion mass spectrometry (SIMS) is the oldest and most sensitive analytical technique for in situ U–Pb geochronology. This paper introduces a new algorithm for SIMS data reduction that treats data as
compositional data, which means that the relative abundances of 204Pb, 206Pb, 207Pb, and 238Pb are processed within a tetrahedral data space or
simplex. The new method is implemented in an eponymous computer programme that is compatible with the two dominant types of SIMS instruments.
Emily H. G. Cooperdock, Florian Hofmann, Ryley M. C. Tibbetts, Anahi Carrera, Aya Takase, and Aaron J. Celestian
Geochronology, 4, 501–515, https://doi.org/10.5194/gchron-4-501-2022, https://doi.org/10.5194/gchron-4-501-2022, 2022
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Apatite and zircon are the most widely used minerals for dating rocks, but they can be difficult to identify in some crushed rock samples. Incorrect mineral identification results in wasted analytical resources and inaccurate data. We show how X-ray computed tomography can be used to efficiently and accurately distinguish apatite from zircon based on density variations, and provide non-destructive 3D grain-specific size, shape, and inclusion information for improved data quality.
Michael Dietze, Sebastian Kreutzer, Margret C. Fuchs, and Sascha Meszner
Geochronology, 4, 323–338, https://doi.org/10.5194/gchron-4-323-2022, https://doi.org/10.5194/gchron-4-323-2022, 2022
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The R package sandbox is a collection of functions that allow the creation, sampling and analysis of fully virtual sediment sections, like having a virtual twin of real-world deposits. This article introduces the concept, features, and workflows required to use sandbox. It shows how a real-world sediment section can be mapped into the model and subsequently addresses a series of theoretical and practical questions, exploiting the flexibility of the model framework.
Gregor Pfalz, Bernhard Diekmann, Johann-Christoph Freytag, Liudmila Syrykh, Dmitry A. Subetto, and Boris K. Biskaborn
Geochronology, 4, 269–295, https://doi.org/10.5194/gchron-4-269-2022, https://doi.org/10.5194/gchron-4-269-2022, 2022
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We use age–depth modeling systems to understand the relationship between age and depth in lake sediment cores. However, depending on which modeling system we use, the model results may vary. We provide a tool to link different modeling systems in an interactive computational environment and make their results comparable. We demonstrate the power of our tool by highlighting three case studies in which we test our application for single-sediment cores and a collection of multiple sediment cores.
Andrea Madella, Christoph Glotzbach, and Todd A. Ehlers
Geochronology, 4, 177–190, https://doi.org/10.5194/gchron-4-177-2022, https://doi.org/10.5194/gchron-4-177-2022, 2022
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Cooling ages date the time at which minerals cross a certain isotherm on the way up to Earth's surface. Such ages can be measured from bedrock material and river sand. If spatial variations in bedrock ages are known in a river catchment, the spatial distribution of erosion can be inferred from the distribution of the ages measured from the river sand grains. Here we develop a new tool to help such analyses, with particular emphasis on quantifying uncertainties due to sample size.
Yang Li and Pieter Vermeesch
Geochronology, 3, 415–420, https://doi.org/10.5194/gchron-3-415-2021, https://doi.org/10.5194/gchron-3-415-2021, 2021
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A conventional isochron is a straight-line fit to two sets of isotopic ratios, D/d and P/d, where P is the radioactive parent, D is the radiogenic daughter, and d is a second isotope of the daughter element. The slope of this line is proportional to the age of the system. An inverse isochron is a linear fit through d/D and P/D. The horizontal intercept of this line is inversely proportional to the age. The latter approach is preferred when d<D, which is the case in Re–Os and K–Ca geochronology.
Cécile Gautheron, Rosella Pinna-Jamme, Alexis Derycke, Floriane Ahadi, Caroline Sanchez, Frédéric Haurine, Gael Monvoisin, Damien Barbosa, Guillaume Delpech, Joseph Maltese, Philippe Sarda, and Laurent Tassan-Got
Geochronology, 3, 351–370, https://doi.org/10.5194/gchron-3-351-2021, https://doi.org/10.5194/gchron-3-351-2021, 2021
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Apatite and zircon (U–Th) / He thermochronology is now a mainstream tool to reconstruct Earth's evolution through the history of cooling and exhumation over the first dozen kilometers. The geological implications of these data rely on the precision of measurements of He, U, Th, and Sm contents in crystals. This technical note documents the methods for He thermochronology developed at the GEOPS laboratory, Paris-Saclay University, that allow (U–Th) / He data to be obtained with precision.
Kalin T. McDannell and Dale R. Issler
Geochronology, 3, 321–335, https://doi.org/10.5194/gchron-3-321-2021, https://doi.org/10.5194/gchron-3-321-2021, 2021
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We generated a synthetic dataset applying published kinetic models and distinct annealing kinetics for the apatite fission track and (U–Th)/He methods using a predetermined thermal history. We then tested how well the true thermal history could be recovered under different data interpretation schemes and geologic constraint assumptions using the Bayesian QTQt software. Our results demonstrate that multikinetic data increase time–temperature resolution and can constrain complex thermal histories.
Birk Härtel, Raymond Jonckheere, Bastian Wauschkuhn, and Lothar Ratschbacher
Geochronology, 3, 259–272, https://doi.org/10.5194/gchron-3-259-2021, https://doi.org/10.5194/gchron-3-259-2021, 2021
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We carried out thermal annealing experiments between 500 and 1000 °C to determine the closure temperature of radiation-damage annealing in zircon (ZrSiO4). Our results show that the different Raman bands of zircon respond differently to annealing. The repair is highest for the external rotation Raman band near 356.6 cm−1. The closure temperature estimates range from 250 to 370 °C for different bands. The differences in closure temperatures offer the prospect of multi-T zircon Raman dating.
Pieter Vermeesch
Geochronology, 3, 247–257, https://doi.org/10.5194/gchron-3-247-2021, https://doi.org/10.5194/gchron-3-247-2021, 2021
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This paper shows that the current practice of filtering discordant U–Pb data based on the relative difference between the 206Pb/238U and 207Pb/206Pb ages is just one of several possible approaches to the problem and demonstrably not the best one. An alternative approach is to define discordance in terms of isotopic composition, as a log ratio distance between the measurement and the concordia line. Application to real data indicates that this reduces the positive bias of filtered age spectra.
Blair Schoene, Michael P. Eddy, C. Brenhin Keller, and Kyle M. Samperton
Geochronology, 3, 181–198, https://doi.org/10.5194/gchron-3-181-2021, https://doi.org/10.5194/gchron-3-181-2021, 2021
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We compare two published U–Pb and 40Ar / 39Ar geochronologic datasets to produce eruption rate models for the Deccan Traps large igneous province. Applying the same approach to each dataset, the resulting models agree well, but the higher-precision U–Pb dataset results in a more detailed eruption model than the lower-precision 40Ar / 39Ar data. We explore sources of geologic uncertainty and reiterate the importance of systematic uncertainties in comparing U–Pb and 40Ar / 39Ar datasets.
Nicholas P. McKay, Julien Emile-Geay, and Deborah Khider
Geochronology, 3, 149–169, https://doi.org/10.5194/gchron-3-149-2021, https://doi.org/10.5194/gchron-3-149-2021, 2021
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This paper describes geoChronR, an R package that streamlines the process of quantifying age uncertainties, propagating uncertainties through several common analyses, and visualizing the results. In addition to describing the structure and underlying theory of the package, we present five real-world use cases that illustrate common workflows in geoChronR. geoChronR is built on the Linked PaleoData framework, is open and extensible, and we welcome feedback and contributions from the community.
Leonie Peti, Kathryn E. Fitzsimmons, Jenni L. Hopkins, Andreas Nilsson, Toshiyuki Fujioka, David Fink, Charles Mifsud, Marcus Christl, Raimund Muscheler, and Paul C. Augustinus
Geochronology, 2, 367–410, https://doi.org/10.5194/gchron-2-367-2020, https://doi.org/10.5194/gchron-2-367-2020, 2020
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Orakei Basin – a former maar lake in Auckland, New Zealand – provides an outstanding sediment record over the last ca. 130 000 years, but an age model is required to allow the reconstruction of climate change and volcanic eruptions contained in the sequence. To construct a relationship between depth in the sediment core and age of deposition, we combined tephrochronology, radiocarbon dating, luminescence dating, and the relative intensity of the paleomagnetic field in a Bayesian age–depth model.
Roger Powell, Eleanor C. R. Green, Estephany Marillo Sialer, and Jon Woodhead
Geochronology, 2, 325–342, https://doi.org/10.5194/gchron-2-325-2020, https://doi.org/10.5194/gchron-2-325-2020, 2020
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The standard approach to isochron calculation assumes that the distribution of uncertainties on the data arising from isotopic analysis is strictly Gaussian. This excludes datasets that have more scatter, even though many appear to have age significance. Our new approach requires only that the central part of the uncertainty distribution of the data defines a "spine" in the trend of the data. A robust statistics approach is used to locate the spine, and an implementation in Python is given.
Simon J. E. Large, Jörn-Frederik Wotzlaw, Marcel Guillong, Albrecht von Quadt, and Christoph A. Heinrich
Geochronology, 2, 209–230, https://doi.org/10.5194/gchron-2-209-2020, https://doi.org/10.5194/gchron-2-209-2020, 2020
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The integration of zircon geochemistry and U–Pb geochronology (petrochronology) allows us to improve our understanding of magmatic processes. Here we could reconstruct the ~300 kyr evolution of the magma reservoir that sourced the magmas, fluids and metals to form the Batu Hijau porphyry Cu–Au deposit. The application of in situ LA-ICP-MS and high-precision CA–ID–TIMS geochronology to the same zircons further allowed an assessment of the strengths and limitations of the different techniques.
Julia Kalanke, Jens Mingram, Stefan Lauterbach, Ryskul Usubaliev, Rik Tjallingii, and Achim Brauer
Geochronology, 2, 133–154, https://doi.org/10.5194/gchron-2-133-2020, https://doi.org/10.5194/gchron-2-133-2020, 2020
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Our study presents the first seasonally laminated (varved) sediment record covering almost the entire Holocene in high mountainous arid Central Asia. The established floating varve chronology is confirmed by two terrestrial radiocarbon dates, whereby aquatic radiocarbon dates reveal decreasing reservoir ages up core. Changes in seasonal deposition characteristics are attributed to changes in runoff and precipitation and/or to evaporative summer conditions.
Pieter Vermeesch
Geochronology, 2, 119–131, https://doi.org/10.5194/gchron-2-119-2020, https://doi.org/10.5194/gchron-2-119-2020, 2020
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The U–Pb method is one of the most powerful and versatile methods in the geochronological toolbox. With two isotopes of uranium decaying to two different isotopes of lead, the U–Pb method offers an internal quality control that is absent from most other geochronological techniques. U-bearing minerals often contain significant amounts of Th, which decays to a third Pb isotope. This paper presents an algorithm to jointly process all three chronometers at once.
Jon Woodhead and Joseph Petrus
Geochronology, 1, 69–84, https://doi.org/10.5194/gchron-1-69-2019, https://doi.org/10.5194/gchron-1-69-2019, 2019
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Recently developed methods for in situ U–Pb age determination in carbonates have found widespread application, but the benefits and limitations of the method over bulk analysis approaches have yet to be fully explored. Here we use speleothems – cave carbonates such as stalagmites and flowstones – to investigate the utility of these in situ dating methodologies for challenging matrices with low U and Pb contents and predominantly late Cenozoic ages.
Cited articles
Barbarand, J., Carter, A., Wood, I., and Hurford, T.: Compositional and
structural control of fission-track annealing in apatite, Chem. Geol.,
198, 107–137, 2003.
Brandon, M. T.: Decomposition of mixed grain age distributions using
Binomfit, On Track, 24, 13–18,
https://campuspress.yale.edu/markbrandon/files/2016/01
(last access: 27 November 2020),
2002.
Burtner, R. L., Nigrini, A., and Donelick, R. A.: Thermochronology of Lower
Cretaceous source rocks in the Idaho-Wyoming thrust belt, Am. Assoc. Pet.
Geol. Bull., 78, 1613–1636,
https://doi.org/10.1306/a25ff233-171b-11d7-8645000102c1865d, 1994.
Carlson, W. D., Donelick, R. A., and Ketcham, R. A.: Variability of apatite
fission-track annealing kinetics: I. Experimental results, Am. Mineral.,
84, 1213–1223, 1999.
Carter, A. and Gallagher, K.: Characterizing the significance of provenance
on the inference of thermal history models from apatite fission-track data – a
synthetic data study, Goel. Soc. Am. Spec. Paper, 378, 7–23, 2004.
Chew, D. M. and Donelick, R. A.: Combined apatite fission track and U-Pb
dating by LA-ICP-MS and its application in apatite provenance analysis,
Quantitative Mineralogy And Microanalysis of Sediments And Sedimentary Rocks, edited by: Sylvester, P., Mineralogical Association of Canada Short Course Series, 42, 219–247, ISBN: 978-0-921294-52-8, 2012.
Cogné, N., Chew, D. M., Donelick, R. A., and Ansberque, C.: LA-ICP-MS
apatite fission track dating: A practical zeta-based approach, Chem. Geol.,
531, 1–11, https://doi.org/10.1016/j.chemgeo.2019.119302, 2020.
Coutand, I., Carrapa, B., Deeken, A., Schmitt, A. K., Sobel, E. R., and
Strecker, M. R.: Propagation of orographic barriers along an active range
front: Insights from sandstone petrography and detrital apatite
fission-track thermochronology in the intramontane Angastaco basin, NW
Argentina, Basin Res., 18, 1–26, https://doi.org/10.1111/j.1365-2117.2006.00283.x,
2006.
Crowley, K. D., Cameron, M., and Shaefer, R. I.: Experimental studies of
annealing of etched fission tracks in fluorapatite, Geochim. Cosmochim.
Acta, 55, 1449–1465, 1991.
Donelick, R. A.: A method of fission track analysis utilizing bulk chemical
etching of apatite, U.S. Patent 5267274, https://www.freepatentsonline.com/5267274.html (last access: 10 June 2022), 1993.
Donelick, R. A., Roden, M. K., Mooers, J. D., Carpenter, B. S., and Miller,
D. S.: Etchable length reduction of induced fission tracks in apatite at
room temperature (∼23 ∘C): Crystallographic orientation effects
and “initial” mean lengths, Int. J. Radiat. Appl. Instrumentation Part D
Nucl. Tracks Radiat. Meas., 17, 261–265, 1990.
Donelick, R. A., O'Sullivan, P. B., and Ketcham, R. A.: Apatite fission-track
analysis, Rev. Mineral. Geochemistry, 58, 49–94, 2005.
Galbraith, R. F.: The radial plot: graphical assessment of spread in ages,
Int. J. Radiat. Appl. Instrumentation. Part D. Nucl. Tracks Radiat. Meas.,
17, 207–214, 1990.
Galbraith, R. F. and Green, P. F.: Estimating the component ages in a finite
mixture, Int. J. Radiat. Appl. Instrumentation. Part D. Nucl. Tracks Radiat.
Meas., 17, 197–206, 1990.
Galbraith, R. F. and Laslett, G. M.: Statistical models for mixed fission
track ages, Nucl. Tracks Radiat. Meas., 21, 459–470, 1993.
Gallagher, K.: Evolving temperature histories from apatite fission-track
data, Earth Planet. Sci. Lett., 136, 421–435, 1995.
Gallagher, K.: Transdimensional inverse thermal history modeling for
quantitative thermochronology, J. Geophys. Res.-Sol. Ea., 117, 1–16,
https://doi.org/10.1029/2011JB008825, 2012.
Gallagher, K. and Ketcham, R. A.: Comment on the reply to the Comment on
“Thermal history modelling: HeFTy vs. QTQt” by Vermeesch and Tian,
Earth-Science Reviews (2014), 139, 279–290, Earth Sci. Rev., 203, 279–290,
https://doi.org/10.1016/j.earscirev.2019.102878, 2020.
Gallagher, K., Brown, R., and Johnson, C.: Fission track analysis and its
applications to geological problems, Annu. Rev. Earth Planet. Sci., 26,
519–572, 1998.
Garver, J. I., Brandon, M. T., Roden-Tice, M., and Kamp, P. J. J.: Exhumation
history of orogenic highlands determined by detrital fission-track
thermochronology, in: Geological Society Special Publication, 154,
283–304, Geological Society of London, https://sp.lyellcollection.org/content/154/1/283.short (last access: 15 November 2017), 1999.
Gleadow, A. J. W., Duddy, I. R., and Lovering, J. F.: Fission track analysis:
a new tool for the evaluation of thermal histories and hydrocarbon
potential, APPEA J., 23, 93–102,
https://doi.org/10.1071/AJ82009, 1983.
Gleadow, A. J. W., Belton, D. X., Kohn, B. P., and Brown, R. W.: Fission
track dating of phosphate minerals and the thermochronology of apatite, Rev.
Mineral. Geochemistry, 48, 579–630, 2002.
Green, P. F.: AFTA Today, OnTrack, 5, 8–10, 1995.
Green, P. F., Duddy, I. R., Gleadow, A. J. W., Tingate, P. R., and Laslett,
G. M.: Fission-track annealing in apatite: track length measurements and the
form of the Arrhenius plot, Nucl. Tracks Radiat. Meas., 10, 323–328,
1985.
Green, P. F., Duddy, I. R., Gleadow, A. J. W., Tingate, P. R., and Laslett,
G. M.: Thermal annealing of fission tracks in apatite: 1. A qualitative
description, Chem. Geol. Isot. Geosci. Sect., 59, 237–253, 1986.
Green, P. F., Duddy, I. R., Laslett, G. M., Hegarty, K. A., Gleadow, A. J.
W., and Lovering, J. F.: Thermal annealing of fission tracks in apatite 4.
Quantitative modelling techniques and extension to geological timescales,
Chem. Geol. Isot. Geosci. Sect., 79, 155–182, 1989.
Hasebe, N., Barbarand, J., Jarvis, K., Carter, A., and Hurford, A. J.:
Apatite fission-track chronometry using laser ablation ICP-MS, Chem. Geol.,
207, 135–145, 2004.
Hurford, A. J. and Green, P. F.: A users' guide to fission track dating
calibration, Earth Planet. Sci. Lett., 59, 343–354, 1982.
Issler, D. R.: An inverse model for extracting thermal histories from
apatite fission track data: instructions and software for the Windows 95
environment, Geol. Surv. Canada, Open File 2325, 85, https://doi.org/10.4095/208313, 1996.
Issler, D. R.: Integrated thermal history analysis of sedimentary basins
using multi-kinetic apatite fission track thermochronology: examples from
northern Canada, AAPG Distinguished Lectures, AAPG Search and Discovery Article #90101,
http://www.searchanddiscovery.com/abstracts/html/2010/DL/ (last access: 10 June 2022), 2011.
Issler, D. R. and Grist, A. M.: Integrated thermal history analysis of the
Beaufort-Mackenzie basin using multi-kinetic apatite fission track
thermochronology, Geochim. Cosmochim. Acta, 72, A413–A413,
https://geoscan.nrcan.gc.ca/starweb/geoscan/servlet.starweb?path=geoscan/fulle.web&search1=R=225531 (last access: 10 June 2022),
2008a.
Issler, D. R. and Grist, A. M.: Reanalysis and reinterpretation of apatite
fission track data from the central Mackenzie Valley, NWT, northern Canada:
implications for kinetic parameter determination and thermal modeling,
edited by: Garver, J. I. and Montario, M. J., Proceedings of the 11th International Conference on Thermochronometry, Anchorage, Alaska, 15–19 September 2008, 130–132,
https://geoscan.nrcan.gc.ca/starweb/geoscan/servlet.starweb?path=geoscan/fulle.web&search1=R=225530 (last access: 10 June 2022),
2008b.
Issler, D. R. and Grist, A. M.: Apatite fission track thermal history
analysis of the Beaufort-Mackenzie Basin, Arctic Canada: a natural
laboratory for testing multi-kinetic thermal annealing models, Thermo 2014,
14th International Conference on Thermochronology, Chamonix-Mont Blanc, France, 8–14 September 2014, 125–126,
https://geoscan.nrcan.gc.ca/starweb/geoscan/servlet.starweb?path=geoscan/fulle.web&search1=R=293881 (last access: 10 June 2022),
2014.
Issler, D. R., Grist, A. M., and Stasiuk, L. D.: Post-Early Devonian thermal
constraints on hydrocarbon source rock maturation in the Keele Tectonic
Zone, Tulita area, NWT, Canada, from multi-kinetic apatite fission track
thermochronology, vitrinite reflectance and shale compaction, Bull. Can.
Pet. Geol., 53, 405–431, https://doi.org/10.2113/53.4.405, 2005.
Issler, D. R., Jiang, C., Reyes, J., and Obermajer, M.: Integrated analysis
of vitrinite reflectance, Rock-Eval 6, gas chromatography, and gas
chromatography-mass spectrometry data for the Reindeer D-27 and Tununuk K-10
wells, Beaufort-Mackenzie Basin, northern Canada, Geol. Surv. Canada, Open
File 8047, 94, https://doi.org/10.4095/297905, 2016.
Issler, D. R., Lane, L. S., and O'Sullivan, P. B.: Characterization,
interpretation, and modelling of multikinetic apatite fission-track data
using elemental data, Geol. Surv. Canada, Sci. Present., 94,
https://doi.org/10.4095/311302, 2018.
Issler, D. R., McDannell, K. T., Lane, L. S., O'Sullivan, P. B., and Neill,
O. K.: A multikinetic approach to apatite fission-track thermal modelling
using elemental data: data and model results for a Permian and Devonian
sample from northern Yukon, Geol. Surv. Canada, Open File 8821, GEOSCAN [data set], https://doi.org/10.4095/328844, 2021.
Jepson, G., Carrapa, B., George, S. W. M., Triantafyllou, A., Egan, S. M.,
Constenius, K. N., Gehrels, G. E., and Ducea, M. N.: Resolving mid- to
upper-crustal exhumation through apatite petrochronology and
thermochronology, Chem. Geol., 565, 120071,
https://doi.org/10.1016/j.chemgeo.2021.120071, 2021.
Ketcham, R. A.: Forward and Inverse Modeling of Low-Temperature
Thermochronometry Data, in: Reviews in Mineralogy and Geochemistry, vol. 58,
edited by: Reiners, T. A. and Elhers, P. W., 275–314, Mineralogical Society of America, https://doi.org/10.2138/rmg.2005.58.11, 2005.
Ketcham, R. A.: Calculation of stoichiometry from EMP data for apatite and
other phases with mixing on monovalent anion sites, Am. Mineral., 100,
1620–1623, 2015.
Ketcham, R. A., Donelick, R. A., and Carlson, W. D.: Variability of apatite
fission-track annealing kinetics; III, Extrapolation to geological time
scales, Am. Mineral., 84, 1235–1255,
https://doi.org/10.2138/am-1999-0903, 1999.
Ketcham, R. A., Donelick, R. A., and Donelick, M. B.: AFTSolve: A program for
multi-kinetic modeling of apatite fission-track data, Geol. Mater. Res.,
2, 1–32,
http://www.minsocam.org/gmr/papers/v2/v2n1/v2n1abs.html (last access: 10 June 2022), 2000.
Ketcham, R. A., Carter, A., Donelick, R. A., Barbarand, J., and Hurford, A.
J.: Improved modeling of fission-track annealing in apatite, Am. Mineral.,
92, 799–810, https://doi.org/10.2138/am.2007.2281, 2007.
Link, C. M. and Bustin, R. M.: Organic maturation and thermal history of
Phanerozoic strata in northern Yukon and northwestern District of Mackenzie,
Bull. Can. Pet. Geol., 37, 266–292, https://pubs.geoscienceworld.org/bcpg/issue/37/3,
1989.
Lisker, F., Ventura, B., and Glasmacher, U. A.: Apatite thermochronology in
modern geology, Geol.
Soc. Spec. Publ., 324, 1–23,
https://sp.lyellcollection.org/content/324/1/1 (last access: 10 June 2022), 2009.
Malusà, M. G. and Fitzgerald, P. G.: Fission-Track Thermochronology and
its Application to Geology, Springer Textbooks in Earth Sciences, Geography and Environment, 393 pp.,
https://doi.org/10.1007/978-3-319-89421-8, 2019.
McDannell, K. T.: Notes on statistical age dispersion in fission-track
datasets: the chi-square test, annealing variability, and analytical
considerations, EarthArXiv, 1–4, https://doi.org/10.31223/osf.io/uj4hx,
2020.
McDannell, K. T. and Issler, D. R.: Simulating sedimentary burial cycles – Part 1: Investigating the role of apatite fission track annealing kinetics using synthetic data, Geochronology, 3, 321–335, https://doi.org/10.5194/gchron-3-321-2021, 2021.
McDannell, K. T., Schneider, D. A., Zeitler, P. K., O'Sullivan, P. B., and
Issler, D. R.: Reconstructing deep-time histories from integrated
thermochronology: An example from southern Baffin Island, Canada, Terra
Nov., 31, 189–204, https://doi.org/10.1111/ter.12386, 2019.
McDannell, K. T., Pinet, N., and Issler, D. R.: Exhuming the Canadian Shield:
preliminary interpretations from low-temperature thermochronology and
significance for the sedimentary succession of the Hudson Bay Basin, in:
Sedimentary basins of the Canadian north – contributions to a 1000 Ma
geological journey and insight on resource potential, edited by: Lavoie, D.
and Dewing, K., Geol. Surv. Can. B., 609, https://doi.org/10.31223/X54P5F, in press, 2022.
Nielsen, C. H. and Sigurdsson, H.: Quantitative methods for electron
microprobe analysis of sodium in natural and synthetic glasses, Am.
Mineral., 66, 547–552, 1981.
Nielsen, S. B., Clausen, O. R., and McGregor, E.: basin%Ro: A vitrinite
reflectance model derived from basin and laboratory data, Basin Res., 29,
515–536, https://doi.org/10.1111/bre.12160, 2017.
Norris, D. K.: Geology, Eagle River, Yukon Territory, Geol. Surv. Canada, Map
1523A, https://doi.org/10.4095/109352, 1981.
Powell, J. W., Schneider, D. A., and Issler, D. R.: Application of
multi-kinetic apatite fission track and (U-Th)/He thermochronology to source
rock thermal history: a case study from the Mackenzie Plain, NWT, Canada,
Basin Res., 30, 497–512, https://doi.org/10.1111/bre.12233, 2018.
Powell, J. W., Issler, D. R., Schneider, D. A., Fallas, K. M., and Stockli,
D. F.: Thermal history of the Mackenzie Plain, Northwest Territories,
Canada: Insights from low-temperature thermochronology of the Devonian
Imperial Formation, Geol. Soc. Am. Bull., 132, 767–783, 2020.
Price, W. L.: A controlled random search procedure for global optimisation,
Comput. J., 20, 367–370, 1977.
Ravenhurst, C. E., Roden-Tice, M. K., and Miller, D. S.: Thermal annealing of
fission tracks in fluorapatite, chlorapatite, manganoanapatite, and Durango
apatite: Experimental results, Can. J. Earth Sci., 40, 995–1007,
https://doi.org/10.1139/e03-032, 2003.
Reyes, J., Saad, S., and Lane, L. S.: Organic petrology and vitrinite thermal
maturation profiles for eight Yukon petroleum exploration wells in Eagle
Plain and Liard basins, Geol. Surv. Canada, Open File 7056, 1–56,
https://doi.org/10.4095/293110, 2013.
Sambridge, M. S. and Compston, W.: Mixture modeling of multi-component data
sets with application to ion-probe zircon ages, Earth Planet. Sci. Lett.,
128, 373–390, https://doi.org/10.1016/0012-821X(94)90157-0, 1994.
Schneider, D. A. and Issler, D. R.: Application of Low-Temperature
Thermochronology to Hydrocarbon Exploration, in: Fission-Track
Thermochronology and its Application to Geology, 1st edn., edited by: Malusà, M. G.
and Fitzgerald, P., Springer International Publishing, Cham, 315–333, https://link.springer.com/chapter/10.1007/978-3-319-89421-8_18 (last access: 10 June 2022),
2019.
Sweeney, J. J. and Burnham, A. K.: Evaluation of a simple model of vitrinite
reflectance based on chemical kinetics, Am. Assoc. Pet. Geol. Bull., 74,
1559–1570, 1990.
Tamer, M. and Ketcham, R.: Is Low-Temperature Fission-Track Annealing in
Apatite a Thermally Controlled Process?, Geochem. Geophys. Geosystems,
21, e2019GC008877, https://doi.org/10.1029/2019GC008877, 2020.
Tello, C. A., Palissari, R., Hadler, J. C., lunes, P. J., Guedes, S., Curvo,
E. A., and Paulo, S. R.: Annealing experiments on induced fission tracks in
apatite: Measurements of horizontal-confined track lengths and track
densities in basal sections and randomly oriented grains, Am. Mineral.,
91, 252–260, 2006.
Vermeesch, P.: On the visualisation of detrital age distributions, Chem.
Geol., 312–313, 190–194, https://doi.org/10.1016/j.chemgeo.2012.04.021, 2012.
Vermeesch, P.: Statistics for Fission-Track Thermochronology, in:
Fission-Track Thermochronology and its Application to Geology, 1st edn., edited by: Malusà, M. G. and Fitzgerald, P., Springer International
Publishing, Cham, 109–122, ISBN: 978-3-319-89419-5, 2019.
Wagner, G. A. and Van den Haute, P.: Fission Track Dating, 1st edn., Solid Earth Sciences Library v. 6, Klewer Academic
Publishers, Dordrecht, ISBN-10: 079231624X, 1992.
Willett, S. D.: Inverse modeling of annealing of fission tracks in apatite
1: A controlled random search method, Am. J. Sci., 297, 939–969,
https://doi.org/10.2475/ajs.297.10.939, 1997.
Short summary
Phanerozoic sedimentary rocks of northern Canada have compositionally heterogeneous detrital apatite with high age dispersion caused by differential thermal annealing. Discrete apatite fission track kinetic populations with variable annealing temperatures are defined using elemental data but are poorly resolved using conventional parameters. Inverse thermal modelling of samples from northern Yukon reveals a record of multiple heating–cooling cycles consistent with geological constraints.
Phanerozoic sedimentary rocks of northern Canada have compositionally heterogeneous detrital...