Articles | Volume 3, issue 1
https://doi.org/10.5194/gchron-3-67-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/gchron-3-67-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
03 Feb 2021
Research article |
| 03 Feb 2021
| 03 Feb 2021
Direct U–Pb dating of carbonates from micron-scale femtosecond laser ablation inductively coupled plasma mass spectrometry images using robust regression
Guilhem Hoareau
CORRESPONDING AUTHOR
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, TOTAL,
LFCR, UMR5150, 64000 Pau, France
Fanny Claverie
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM,
UMR5254, 64000 Pau, France
Christophe Pecheyran
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM,
UMR5254, 64000 Pau, France
Christian Paroissin
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, LMAP,
UMR5142, 64000 Pau, France
Pierre-Alexandre Grignard
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, TOTAL,
LFCR, UMR5150, 64000 Pau, France
Geoffrey Motte
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, TOTAL,
LFCR, UMR5150, 64000 Pau, France
Olivier Chailan
TOTAL, CSTJF, 64018 Pau CEDEX, France
Jean-Pierre Girard
TOTAL, CSTJF, 64018 Pau CEDEX, France
Related authors
Guilhem Hoareau, Fanny Claverie, Christophe Pecheyran, Gaëlle Barbotin, Michael Perk, Nicolas E. Beaudoin, Brice Lacroix, and E. Troy Rasbury
EGUsphere, https://doi.org/10.5194/egusphere-2024-2366, https://doi.org/10.5194/egusphere-2024-2366, 2024
Short summary
Short summary
We present an approach to U-Pb dating of carbonates using isotopic image maps. The maps are divided into squares called virtual spots. For each virtual spot, statistical values (mean, uncertainty) are used to determine the age. The user can modify the size and location of the virtual spots and select those that give the most robust age. This approach, applied to high spatial resolution images, makes it possible for the first time to obtain satisfactory ages on images as small as 100 µm x 100 µm.
Olivier Lacombe, Nicolas E. Beaudoin, Guilhem Hoareau, Aurélie Labeur, Christophe Pecheyran, and Jean-Paul Callot
Solid Earth, 12, 2145–2157, https://doi.org/10.5194/se-12-2145-2021, https://doi.org/10.5194/se-12-2145-2021, 2021
Short summary
Short summary
This paper aims to illustrate how the timing and duration of contractional deformation associated with folding in orogenic forelands can be constrained by the dating of brittle mesostructures observed in folded strata. The study combines new and already published absolute ages of fractures to provide, for the first time, an educated discussion about the factors controlling the duration of the sequence of deformation encompassing layer-parallel shortening, fold growth, and late fold tightening.
Nicolas E. Beaudoin, Aurélie Labeur, Olivier Lacombe, Daniel Koehn, Andrea Billi, Guilhem Hoareau, Adrian Boyce, Cédric M. John, Marta Marchegiano, Nick M. Roberts, Ian L. Millar, Fanny Claverie, Christophe Pecheyran, and Jean-Paul Callot
Solid Earth, 11, 1617–1641, https://doi.org/10.5194/se-11-1617-2020, https://doi.org/10.5194/se-11-1617-2020, 2020
Short summary
Short summary
This paper reports a multiproxy approach to reconstruct the depth, timing, and extent of the past fluid flow during the formation of a fold-and-thrust belt in the Northern Apennines, Italy. The unique combination of paleopiezometry and absolute dating returns the absolute timing of the sequence of deformation. Combined with burial models, this leads to predict the expected temperatures for fluid, highlighting a limited hydrothermal fluid flow we relate to the large-scale subsurface geometry.
G. Hoareau, B. Bomou, D. J. J. van Hinsbergen, N. Carry, D. Marquer, Y. Donnadieu, G. Le Hir, B. Vrielynck, and A.-V. Walter-Simonnet
Clim. Past, 11, 1751–1767, https://doi.org/10.5194/cp-11-1751-2015, https://doi.org/10.5194/cp-11-1751-2015, 2015
Short summary
Short summary
The impact of Neo-Tethys closure on early Cenozoic warming has been tested. First, the volume of subducted sediments and the amount of CO2 emitted along the northern Tethys margin has been calculated. Second, corresponding pCO2 have been tested using the GEOCLIM model. Despite high CO2 production, maximum pCO2 values (750ppm) do not reach values inferred from proxies. Other cited sources of excess CO2 such as the NAIP are also below fluxes required by GEOCLIM to fit with proxy data.
Guilhem Hoareau, Fanny Claverie, Christophe Pecheyran, Gaëlle Barbotin, Michael Perk, Nicolas E. Beaudoin, Brice Lacroix, and E. Troy Rasbury
EGUsphere, https://doi.org/10.5194/egusphere-2024-2366, https://doi.org/10.5194/egusphere-2024-2366, 2024
Short summary
Short summary
We present an approach to U-Pb dating of carbonates using isotopic image maps. The maps are divided into squares called virtual spots. For each virtual spot, statistical values (mean, uncertainty) are used to determine the age. The user can modify the size and location of the virtual spots and select those that give the most robust age. This approach, applied to high spatial resolution images, makes it possible for the first time to obtain satisfactory ages on images as small as 100 µm x 100 µm.
Loïc Martin, Julius Nouet, Arnaud Dapoigny, Gaëlle Barbotin, Fanny Claverie, Edwige Pons-Branchu, Jocelyn Barbarand, Christophe Pécheyran, Norbert Mercier, Fanny Derym, Bernard Gély, and Hélène Valladas
Geochronology, 6, 247–263, https://doi.org/10.5194/gchron-6-247-2024, https://doi.org/10.5194/gchron-6-247-2024, 2024
Short summary
Short summary
Carbonate wall deposits of Trou du Renard cave (France) were dated using a multimethod approach: U–Th dating by bulk dissolution of samples and inductively coupled plasma mass spectrometry (ICP-MS), U–Th dating by laser ablation ICP-MS imaging, and radiocarbon dating. The samples were studied to ensure that they give reliable ages. Ages ranging from 187.9 ± 5.3 ka and 1.4 ± 0.1 ka were found. This approach should make it possible to establish more robust chronologies of archaeological caves.
Vincent Mouchi, Christophe Pecheyran, Fanny Claverie, Cécile Cathalot, Marjolaine Matabos, Yoan Germain, Olivier Rouxel, Didier Jollivet, Thomas Broquet, and Thierry Comtet
Biogeosciences, 21, 145–160, https://doi.org/10.5194/bg-21-145-2024, https://doi.org/10.5194/bg-21-145-2024, 2024
Short summary
Short summary
The impact of deep-sea mining will depend critically on the ability of larval dispersal of hydrothermal mollusks to connect and replenish natural populations. However, assessing connectivity is extremely challenging, especially in the deep sea. Here, we investigate the potential of using the chemical composition of larval shells to discriminate larval origins between multiple hydrothermal sites in the southwest Pacific. Our results confirm that this method can be applied with high accuracy.
Olivier Lacombe, Nicolas E. Beaudoin, Guilhem Hoareau, Aurélie Labeur, Christophe Pecheyran, and Jean-Paul Callot
Solid Earth, 12, 2145–2157, https://doi.org/10.5194/se-12-2145-2021, https://doi.org/10.5194/se-12-2145-2021, 2021
Short summary
Short summary
This paper aims to illustrate how the timing and duration of contractional deformation associated with folding in orogenic forelands can be constrained by the dating of brittle mesostructures observed in folded strata. The study combines new and already published absolute ages of fractures to provide, for the first time, an educated discussion about the factors controlling the duration of the sequence of deformation encompassing layer-parallel shortening, fold growth, and late fold tightening.
Nicolas E. Beaudoin, Aurélie Labeur, Olivier Lacombe, Daniel Koehn, Andrea Billi, Guilhem Hoareau, Adrian Boyce, Cédric M. John, Marta Marchegiano, Nick M. Roberts, Ian L. Millar, Fanny Claverie, Christophe Pecheyran, and Jean-Paul Callot
Solid Earth, 11, 1617–1641, https://doi.org/10.5194/se-11-1617-2020, https://doi.org/10.5194/se-11-1617-2020, 2020
Short summary
Short summary
This paper reports a multiproxy approach to reconstruct the depth, timing, and extent of the past fluid flow during the formation of a fold-and-thrust belt in the Northern Apennines, Italy. The unique combination of paleopiezometry and absolute dating returns the absolute timing of the sequence of deformation. Combined with burial models, this leads to predict the expected temperatures for fluid, highlighting a limited hydrothermal fluid flow we relate to the large-scale subsurface geometry.
Luciana A. Pereira, Roberto V. Santos, Marília Hauser, Fabrice Duponchelle, Fernando Carvajal, Christophe Pecheyran, Sylvain Bérail, and Marc Pouilly
Biogeosciences, 16, 1781–1797, https://doi.org/10.5194/bg-16-1781-2019, https://doi.org/10.5194/bg-16-1781-2019, 2019
Short summary
Short summary
This study presents the first step for a chemical origin certification of pirarucu fishery in the Amazon. A preliminary isotopic tool to improve the actual tracking system integrates ecological, social, and economic aspects of Amazon dynamics. The geographic origin validation of farmed and wild fishes contributes to environmental and social practices, secures food and income to communities, helps manage endangered species, reinforces aquaculture, and combats illegal fisheries.
G. Hoareau, B. Bomou, D. J. J. van Hinsbergen, N. Carry, D. Marquer, Y. Donnadieu, G. Le Hir, B. Vrielynck, and A.-V. Walter-Simonnet
Clim. Past, 11, 1751–1767, https://doi.org/10.5194/cp-11-1751-2015, https://doi.org/10.5194/cp-11-1751-2015, 2015
Short summary
Short summary
The impact of Neo-Tethys closure on early Cenozoic warming has been tested. First, the volume of subducted sediments and the amount of CO2 emitted along the northern Tethys margin has been calculated. Second, corresponding pCO2 have been tested using the GEOCLIM model. Despite high CO2 production, maximum pCO2 values (750ppm) do not reach values inferred from proxies. Other cited sources of excess CO2 such as the NAIP are also below fluxes required by GEOCLIM to fit with proxy data.
Related subject area
SIMS, LA-ICP-MS
U–Pb dating on calcite paleosol nodules: first absolute age constraints on the Miocene continental succession of the Paris Basin
A comparison between in situ monazite Lu–Hf and U–Pb geochronology
Effect of chemical abrasion of zircon on SIMS U–Pb, δ18O, trace element, and LA-ICPMS trace element and Lu–Hf isotopic analyses
On the viability of detrital biotite Rb–Sr geochronology
Late Neogene terrestrial climate reconstruction of the central Namib Desert derived by the combination of U–Pb silcrete and terrestrial cosmogenic nuclide exposure dating
Examination of the accuracy of SHRIMP U–Pb geochronology based on samples dated by both SHRIMP and CA-TIMS
In situ U–Pb dating of 4 billion-year-old carbonates in the martian meteorite Allan Hills 84001
Constraining the geothermal parameters of in situ Rb–Sr dating on Proterozoic shales and their subsequent applications
Short communication: On the potential use of materials with heterogeneously distributed parent and daughter isotopes as primary standards for non-U–Pb geochronological applications of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS)
In situ Lu–Hf geochronology of calcite
Calcite U–Pb dating of altered ancient oceanic crust in the North Pamir, Central Asia
Towards in situ U–Pb dating of dolomite
Uranium incorporation in fluorite and exploration of U–Pb dating
U − Pb geochronology of epidote by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) as a tool for dating hydrothermal-vein formation
Tools for uranium characterization in carbonate samples: case studies of natural U–Pb geochronology reference materials
Technical note: LA–ICP-MS U–Pb dating of unetched and etched apatites
The use of ASH-15 flowstone as a matrix-matched reference material for laser-ablation U − Pb geochronology of calcite
Expanding the limits of laser-ablation U–Pb calcite geochronology
Resolving multiple geological events using in situ Rb–Sr geochronology: implications for metallogenesis at Tropicana, Western Australia
LA-ICPMS U–Pb geochronology of detrital zircon grains from the Coconino, Moenkopi, and Chinle formations in the Petrified Forest National Park (Arizona)
Evaluating the reliability of U–Pb laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) carbonate geochronology: matrix issues and a potential calcite validation reference material
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb carbonate geochronology: strategies, progress, and limitations
Vincent Monchal, Rémi Rateau, Kerstin Drost, Cyril Gagnaison, Bastien Mennecart, Renaud Toullec, Koen Torremans, and David Chew
Geochronology, 7, 139–156, https://doi.org/10.5194/gchron-7-139-2025, https://doi.org/10.5194/gchron-7-139-2025, 2025
Short summary
Short summary
Sedimentary rocks are typically dated indirectly, by comparing the fossil content of basins with the geological timescale. In this study, we employed an absolute dating approach to date 19\,Myr old sediments in the Paris Basin, using uranium–lead dating of calcite nodules associated with soil formation. The precision of our new ages enable more accurate comparisons (independent of their fossil contents) between the Paris Basin and other basins of similar age.
Alexander T. De Vries Van Leeuwen, Stijn Glorie, Martin Hand, Jacob Mulder, and Sarah E. Gilbert
Geochronology Discuss., https://doi.org/10.5194/gchron-2024-29, https://doi.org/10.5194/gchron-2024-29, 2024
Revised manuscript accepted for GChron
Short summary
Short summary
In this contribution we demonstrate in situ monazite Lu–Hf dating and compare results with U–Th–Pb dating. We present data from monazite reference materials and complex samples to demonstrate the viability of this method. We show that in situ Lu–Hf dating of monazite can resolve multiple age populations and may find use where the U–Th–Pb system is compromised by Pb-loss, non-radiogenic Pb contamination, excess 206 Pb, low U contents, or a combination of these factors.
Cate Kooymans, Charles W. Magee Jr., Kathryn Waltenberg, Noreen J. Evans, Simon Bodorkos, Yuri Amelin, Sandra L. Kamo, and Trevor Ireland
Geochronology, 6, 337–363, https://doi.org/10.5194/gchron-6-337-2024, https://doi.org/10.5194/gchron-6-337-2024, 2024
Short summary
Short summary
Zircon is a mineral where uranium decays to lead. Some radiation damage lets lead escape. A method called chemical abrasion (CA) dissolves out the damaged portions of zircon so that remaining zircon retains lead. We compare ion beam analyses of untreated and chemically abraded zircons. The ion beam ages for untreated zircons match the reference values for untreated zircon. The ion beam ages for CA zircon match CA reference ages. Other elements are unaffected by the chemical abrasion process.
Kyle P. Larson, Brendan Dyck, Sudip Shrestha, Mark Button, and Yani Najman
Geochronology, 6, 303–312, https://doi.org/10.5194/gchron-6-303-2024, https://doi.org/10.5194/gchron-6-303-2024, 2024
Short summary
Short summary
This study demonstrates the utility of laser-ablation-based detrital biotite Rb–Sr geochronology to investigate the rates of exhumation and burial in active mountain-building systems. It is further demonstrated that additional chemical data collected during spot analyses can be used to determine temperatures recorded in biotite. The method used has advantages over traditional methods in speed, ease of acquisition, and the ability to collect additional chemical information.
Benedikt Ritter, Richard Albert, Aleksandr Rakipov, Frederik M. Van der Wateren, Tibor J. Dunai, and Axel Gerdes
Geochronology, 5, 433–450, https://doi.org/10.5194/gchron-5-433-2023, https://doi.org/10.5194/gchron-5-433-2023, 2023
Short summary
Short summary
Chronological information on the evolution of the Namib Desert is scarce. We used U–Pb dating of silcretes formed by pressure solution during calcrete formation to track paleoclimate variability since the Late Miocene. Calcrete formation took place during the Pliocene with an abrupt cessation at 2.9 Ma. The end took place due to deep canyon incision which we dated using TCN exposure dating. With our data we correct and contribute to the Neogene history of the Namib Desert and its evolution.
Charles W. Magee Jr., Simon Bodorkos, Christopher J. Lewis, James L. Crowley, Corey J. Wall, and Richard M. Friedman
Geochronology, 5, 1–19, https://doi.org/10.5194/gchron-5-1-2023, https://doi.org/10.5194/gchron-5-1-2023, 2023
Short summary
Short summary
SHRIMP (Sensitive High Resolution Ion MicroProbe) is an instrument that for decades has used the radioactive decay of uranium into lead to measure geologic time. The accuracy and precision of this instrument has not been seriously reviewed in almost 20 years. This paper compares several dozen SHRIMP ages in our database with more accurate and precise methods to assess SHRIMP accuracy and precision. Analytical and geological complications are addressed to try to improve the method.
Romain Tartèse and Ian C. Lyon
Geochronology, 4, 683–690, https://doi.org/10.5194/gchron-4-683-2022, https://doi.org/10.5194/gchron-4-683-2022, 2022
Short summary
Short summary
Absolute chronological constraints are crucial in Earth and planetary sciences. In recent years, U–Pb dating of carbonates has provided information on the timing of, for example, diagenesis, faulting, or hydrothermalism. These studies have targeted relatively young terrestrial carbonates up to 300 million years old. By dating 3.9 billion-year-old martian carbonates in situ using the U–Pb chronometer, we show that this system is robust in ancient samples that have had a relatively simple history.
Darwinaji Subarkah, Angus L. Nixon, Monica Jimenez, Alan S. Collins, Morgan L. Blades, Juraj Farkaš, Sarah E. Gilbert, Simon Holford, and Amber Jarrett
Geochronology, 4, 577–600, https://doi.org/10.5194/gchron-4-577-2022, https://doi.org/10.5194/gchron-4-577-2022, 2022
Short summary
Short summary
Advancements in technology have introduced new techniques to more quickly and cheaply date rocks with little sample preparation. A unique use of this method is to date shales and constrain when these rocks were first deposited. This approach can also time when such sequences were subsequently affected by heat or fluids after they were deposited. This is useful, as the formation of precious-metal-bearing systems or petroleum source rocks is commonly associated with such processes.
Daniil V. Popov
Geochronology, 4, 399–407, https://doi.org/10.5194/gchron-4-399-2022, https://doi.org/10.5194/gchron-4-399-2022, 2022
Short summary
Short summary
This work provides equations allowing the use of minerals with variable concentrations of parent and daughter isotopes as primary standards to correct for elemental fractionation during the analysis by laser ablation inductively coupled plasma mass spectrometry.
Alexander Simpson, Stijn Glorie, Martin Hand, Carl Spandler, Sarah Gilbert, and Brad Cave
Geochronology, 4, 353–372, https://doi.org/10.5194/gchron-4-353-2022, https://doi.org/10.5194/gchron-4-353-2022, 2022
Short summary
Short summary
The article demonstrates a new technique that can be used to determine the age of calcite crystallisation using the decay of 176Lu to 176Hf. The technique is novel because (a) Lu–Hf radiometric dating is rarely applied to calcite and (b) this is the first instance where analysis has been conducted by ablating the sample with a laser beam rather than bulk dissolution. By using laser ablation the original context of the sample is preserved.
Johannes Rembe, Renjie Zhou, Edward R. Sobel, Jonas Kley, Jie Chen, Jian-Xin Zhao, Yuexing Feng, and Daryl L. Howard
Geochronology, 4, 227–250, https://doi.org/10.5194/gchron-4-227-2022, https://doi.org/10.5194/gchron-4-227-2022, 2022
Short summary
Short summary
Calcite is frequently formed during alteration processes in the basaltic, uppermost layer of juvenile oceanic crust. Weathered oceanic basalts are hard to date with conventional radiometric methods. We show in a case study from the North Pamir, Central Asia, that calcite U–Pb age data, supported by geochemistry and petrological microscopy, have potential to date sufficiently old oceanic basalts, if the time span between basalt extrusion and latest calcite precipitation (~ 25 Myr) is considered.
Bar Elisha, Perach Nuriel, Andrew Kylander-Clark, and Ram Weinberger
Geochronology, 3, 337–349, https://doi.org/10.5194/gchron-3-337-2021, https://doi.org/10.5194/gchron-3-337-2021, 2021
Short summary
Short summary
Distinguishing between different dolomitization processes is challenging yet critical for resolving some of the issues and ambiguities related to the formation of dolomitic rocks. Accurate U–Pb absolute dating of dolomite by LA-ICP-MS could contribute to a better understanding of the dolomitization process by placing syngenetic, early diagenetic, and/or epigenetic events in the proper geological context.
Louise Lenoir, Thomas Blaise, Andréa Somogyi, Benjamin Brigaud, Jocelyn Barbarand, Claire Boukari, Julius Nouet, Aurore Brézard-Oudot, and Maurice Pagel
Geochronology, 3, 199–227, https://doi.org/10.5194/gchron-3-199-2021, https://doi.org/10.5194/gchron-3-199-2021, 2021
Short summary
Short summary
To explore the U–Pb geochronometer in fluorite, the spatial distribution of uranium and other substituted elements in natural crystals is investigated using induced fission-track and synchrotron radiation X-ray fluorescence mapping. LA-ICP-MS U–Pb dating on four crystals, which preserve micrometer-scale variations in U concentrations, yields identical ages within analytical uncertainty. Our results show that fluorite U–Pb geochronology has potential for dating distinct crystal growth stages.
Veronica Peverelli, Tanya Ewing, Daniela Rubatto, Martin Wille, Alfons Berger, Igor Maria Villa, Pierre Lanari, Thomas Pettke, and Marco Herwegh
Geochronology, 3, 123–147, https://doi.org/10.5194/gchron-3-123-2021, https://doi.org/10.5194/gchron-3-123-2021, 2021
Short summary
Short summary
This work presents LA-ICP-MS U–Pb geochronology of epidote in hydrothermal veins. The challenges of epidote dating are addressed, and a protocol is proposed allowing us to obtain epidote U–Pb ages with a precision as good as 5 % in addition to the initial Pb isotopic composition of the epidote-forming fluid. Epidote demonstrates its potential to be used as a U–Pb geochronometer and as a fluid tracer, allowing us to reconstruct the timing of hydrothermal activity and the origin of the fluid(s).
E. Troy Rasbury, Theodore M. Present, Paul Northrup, Ryan V. Tappero, Antonio Lanzirotti, Jennifer M. Cole, Kathleen M. Wooton, and Kevin Hatton
Geochronology, 3, 103–122, https://doi.org/10.5194/gchron-3-103-2021, https://doi.org/10.5194/gchron-3-103-2021, 2021
Short summary
Short summary
We characterize three natural carbonate samples with elevated uranium/lead (U/Pb) ratios to demonstrate techniques improving the understanding of U incorporation in carbonates for U/Pb dating. With the rapidly accelerating application of laser ablation analyses, there is a great need for well-characterized reference materials that can serve multiple functions. Strontium (Sr) isotope analyses and U XANES demonstrate that these samples could be used as reference materials.
Fanis Abdullin, Luigi A. Solari, Jesús Solé, and Carlos Ortega-Obregón
Geochronology, 3, 59–65, https://doi.org/10.5194/gchron-3-59-2021, https://doi.org/10.5194/gchron-3-59-2021, 2021
Short summary
Short summary
Unetched and etched apatite grains from five samples were dated by U–Pb method using laser ablation inductively coupled plasma mass spectrometry. Our experiment indicates that etching needed for apatite fission track dating has insignificant effects on obtaining accurate U–Pb ages; thus, the laser ablation-based technique may be used for apatite fission track and U–Pb double dating.
Perach Nuriel, Jörn-Frederik Wotzlaw, Maria Ovtcharova, Anton Vaks, Ciprian Stremtan, Martin Šala, Nick M. W. Roberts, and Andrew R. C. Kylander-Clark
Geochronology, 3, 35–47, https://doi.org/10.5194/gchron-3-35-2021, https://doi.org/10.5194/gchron-3-35-2021, 2021
Short summary
Short summary
This contribution presents a new reference material, ASH-15 flowstone with an age of 2.965 ± 0.011 Ma (95 % CI), to be used for in situ U–Pb dating of carbonate material. The new age analyses include the use of the EARTHTIME isotopic tracers and a large number of sub-samples (n = 37) with small aliquots (1–7 mg) each that are more representative of laser-ablation spot analysis. The new results could improve the propagated uncertainties on the final age with a minimal value of 0.4 %.
Andrew R. C. Kylander-Clark
Geochronology, 2, 343–354, https://doi.org/10.5194/gchron-2-343-2020, https://doi.org/10.5194/gchron-2-343-2020, 2020
Short summary
Short summary
This paper serves as a guide to those interested in dating calcite by laser ablation. Within it are theoretical and practical limits of U and Pb concentrations (and U / Pb ratios), which would allow viable extraction of ages from calcite (and other minerals with moderate U / Pb ratios), and which type of instrumentation would be appropriate for any given sample. The method described uses a new detector array, allowing for lower detection limits and thereby expanding the range of viable samples.
Hugo K. H. Olierook, Kai Rankenburg, Stanislav Ulrich, Christopher L. Kirkland, Noreen J. Evans, Stephen Brown, Brent I. A. McInnes, Alexander Prent, Jack Gillespie, Bradley McDonald, and Miles Darragh
Geochronology, 2, 283–303, https://doi.org/10.5194/gchron-2-283-2020, https://doi.org/10.5194/gchron-2-283-2020, 2020
Short summary
Short summary
Using a relatively new dating technique, in situ Rb–Sr geochronology, we constrain the ages of two generations of mineral assemblages from the Tropicana Zone, Western Australia. The first, dated at ca. 2535 Ma, is associated with exhumation of an Archean craton margin and gold mineralization. The second, dated at ca. 1210 Ma, has not been previously documented in the Tropicana Zone. It is probably associated with Stage II of the Albany–Fraser Orogeny and additional gold mineralization.
George Gehrels, Dominique Giesler, Paul Olsen, Dennis Kent, Adam Marsh, William Parker, Cornelia Rasmussen, Roland Mundil, Randall Irmis, John Geissman, and Christopher Lepre
Geochronology, 2, 257–282, https://doi.org/10.5194/gchron-2-257-2020, https://doi.org/10.5194/gchron-2-257-2020, 2020
Short summary
Short summary
U–Pb ages of zircon crystals are used to determine the provenance and depositional age of strata of the Triassic Chinle and Moenkopi formations and the Permian Coconino Sandstone of northern Arizona. Primary source regions include the Ouachita orogen, local Precambrian basement rocks, and Permian–Triassic magmatic arcs to the south and west. Ages from fine-grained strata provide reliable depositional ages, whereas ages from sandstones are compromised by zircon grains recycled from older strata.
Marcel Guillong, Jörn-Frederik Wotzlaw, Nathan Looser, and Oscar Laurent
Geochronology, 2, 155–167, https://doi.org/10.5194/gchron-2-155-2020, https://doi.org/10.5194/gchron-2-155-2020, 2020
Short summary
Short summary
The dating of carbonates by laser ablation inductively coupled plasma mass spectrometry is improved by an additional, newly characterised reference material and adapted data evaluation protocols: the shape (diameter to depth) of the ablation crater has to be as similar as possible in the reference material used and the unknown samples to avoid an offset. Different carbonates have different ablation rates per laser pulse. With robust uncertainty propagation, precision can be as good as 2–3 %.
Nick M. W. Roberts, Kerstin Drost, Matthew S. A. Horstwood, Daniel J. Condon, David Chew, Henrik Drake, Antoni E. Milodowski, Noah M. McLean, Andrew J. Smye, Richard J. Walker, Richard Haslam, Keith Hodson, Jonathan Imber, Nicolas Beaudoin, and Jack K. Lee
Geochronology, 2, 33–61, https://doi.org/10.5194/gchron-2-33-2020, https://doi.org/10.5194/gchron-2-33-2020, 2020
Short summary
Short summary
Here we review current progress in LA-ICP-MS U–Pb carbonate geochronology and present strategies for acquisition and interpretation of carbonate U–Pb dates. We cover topics from imaging techniques and U and Pb incorporation into calcite to potential limitations of the method – disequilibrium and isotope mobility. We demonstrate the incorporation of imaging and compositional data to help refine and interpret U–Pb dates. We expect this paper to become a
go-toreference paper for years to come.
Cited articles
Aramendía, M., Rello, L., Bérail, S., Donard, A., Pécheyran,
C., and Resano, M.: Direct analysis of dried blood spots by
femtosecond-laser ablation-inductively coupled plasma-mass spectrometry.
Feasibility of split-flow laser ablation for simultaneous trace element and
isotopic analysis, J. Anal. Atom. Spectrom., 30, 296–309, 2015.
Ballihaut, G., Claverie, F., Pécheyran, C., Mounicou, S., Grimaud, R.,
and Lobinski, R.: Sensitive Detection of Selenoproteins in Gel
Electrophoresis by High Repetition Rate Femtosecond Laser
Ablation-Inductively Coupled Plasma Mass Spectrometry, Anal. Chem., 79, 6874–6880, 2007.
Beaudoin, N., Lacombe, O., Roberts, N. M. W., and Koehn, D.: U-Pb dating of
calcite veins reveals complex stress evolution and thrust sequence in the
Bighorn Basin, Wyoming, USA, Geology, 46, 1015–1018, https://doi.org/10.1130/G45379.1, 2018.
Canudo, J. I. and Molina, E.: Biocronología de foraminíferos
planctónicos de la secuencia deposicional de Jaca (Pirineo
Aragonés): Eoceno medio y superior, in: Proceedings of the II Congreso Geológico de España, Granada, Spain, 273–276, 1988 (in Spanish).
Drost, K., Chew, D., Petrus, J. A., Scholze, F., Woodhead, J. D., Schneider,
J. W., and Harper, D. A. T: An image mapping approach to U-Pb LA-ICP-MS
carbonate dating and applications to direct dating of carbonate
sedimentation, Geochem., Geophy., Geosy., 19, 46314648, https://doi.org/10.1029/2018GC007850, 2018.
Elisha, B., Nuriel, P., Kylander-Clark, A., and Weinberger, R.: Towards in-situ U–Pb dating of dolomites, Geochronology Discuss. [preprint], https://doi.org/10.5194/gchron-2020-19, in review, 2020.
Godeau, N., Deschamps, P., Guihou, A., Leonide, P., Tendil, A., Gerdes, A.,
Hamelin, B., and Girard, J.-P.: U-Pb dating of calcite cement and diagenetic
history in microporous carbonate reservoirs: Case of the Urgonian Limestone,
France, Geology, 46, 247–250, https://doi.org/10.1130/G39905.1, 2018.
Guillong, M., Wotzlaw, J.-F., Looser, N., and Laurent, O.: Evaluating the reliability of U–Pb laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) carbonate geochronology: matrix issues and a potential calcite validation reference material, Geochronology, 2, 155–167, https://doi.org/10.5194/gchron-2-155-2020, 2020.
Hill, C. A., Polyak, V. J., Asmerom, Y., and Provencio, P. P.: Constraints on
a Late Cretaceous uplift, denudation, and incision of the Grand Canyon
region, southwestern Colorado Plateau, USA, from U-Pb dating of lacustrine
limestone, Tectonics, 35, 896–906, https://doi.org/10.1002/2016TC004166, 2016.
Horstwood, M. S. A., Košler, J., Gehrels, G., Jackson, S. E., Mclean, N. M., Paton,
C., Pearson, N. J., Sircombe, K., Sylvester, P., Vermeesch, P., Bowring, J. F.,
Condon, D. J., and Schoene, B.: CommunityDerived Standards for LA-ICP-MS
U-(Th-)Pb Geochronology – Uncertainty Propagation, Age Interpretation and
Data Reporting, Geostand. Geoanal. Res., 40, 311332, https://doi.org/10.1111/j.1751-908X.2016.00379.x, 2016.
Koller, M. and Stahel, W. A.: Sharpening Wald-type inference in robust
regression for small samples, Comput. Stat. Data An., 55, 2504–2515, 2011.
Koller, M. and Stahel, W. A.: Nonsingular subsampling for regression
S-estimators with categorical predictors, Computation. Stat., 32, 631–646, https://doi.org/10.1007/s00180-016-0679-x, 2017.
Li, Q., Parrish, R. R., Horstwood, M. S. A., and McArthur, J. M.: U-Pb dating of
cements in Mesozoic ammonites, Chem. Geol., 376, 76–83, 2014.
Ludwig, K. R.: User's manual for Isoplot version 3.75–4.15: a
geochronological toolkit for Microsoft Excel, Berkeley Geochronological Center Special Publication, Berkeley, CA, USA, 2012.
Maechler, M., Rousseeuw, P., Croux, C., Todorov, V., Ruckstuhl, A.,
Salibian-Barrera, M., Verbeke, T., Koller, M., Conceicao, E. L. T., and Anna di
Palma, M.: robustbase: Basic Robust Statistics R package version 0.93-5, available at:
http://CRAN.R-project.org/package=robustbase (last access: 1 April 2020), 2019.
Mochales, T., Pueyo, E. L., Casas, A. M., and Barnolas, A.: Restoring
paleomagnetic data in complex superposed folding settings: the Boltaña
anticline (Southern Pyrenees), Tectonophysics, 671, 281–298, 2016.
Mouthereau, F., Filleaudeau, P. Y., Vacherat, A., Pik, R., Lacombe, O.,
Fellin, M. G., Castelltort, S., Christophoul, F., and Masini, E.: Placing
limits to shortening evolution in the Pyrenees: role of margin architecture
and implications for the Iberia/Europe convergence, Tectonics,
33, 2283–2314,
https://doi.org/10.1002/2014TC003663, 2014.
Nuriel, P., Craddock, J., Kylander-Clark, A. R., Uysal, T., Karabacak, V.,
Dirik, R. K., Hacker, B. R., and Weinberger, R.: Reactivation history of the
North Anatolian fault zone based on calcite age-strain analyses, Geology, 47, 465–469,
2019.
Oms, O., Dinarès-Turell, J., and Remacha, E.: Magnetic stratigraphy from
deep clastic turbidites: An example from the Eocene Hecho Group (southern
Pyrenees), Studia Geophysica et Geodetica, 47, 275–288, 2003.
Parrish, R. R., Parrish, C. M., and Lasalle, S.: Vein calcite dating reveals
Pyrenean orogen as cause of Paleogene deformation in southern England,
J. Geol. Soc. London, 175, 425–442,
https://doi.org/10.1144/jgs2017-107,
2018.
Powell, R., Woodhead, J., and Hergt, J.: Improving isochron calculations with
robust statistics and the bootstrap, Chem. Geol., 185, 91–204, 2002.
Powell, R., Green, E. C. R., Marillo Sialer, E., and Woodhead, J.: Robust isochron calculation, Geochronology, 2, 325–342, https://doi.org/10.5194/gchron-2-325-2020, 2020.
Premoli Silva, I., Wade, B. S., and Pearson, P. N.: Taxonomy, biostratigraphy, and phylogeny of Globigerinatheka and Orbulinoides, in: Atlas of Eocene Planktonic Foraminifera, edited by: Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T., and Berggren, W. A., Cushman Foundation for Foraminiferal Research, Fredericksburg, USA, Special Publication, 41, 169–212, 2016.
Ring, U. and Gerdes, A.: Kinematics of the Alpenrhein-Bodensee graben system
in the Central Alps: Oligocene/Miocene transtension due to formation of the
Western Alps arc, Tectonics, 35, 1367–1391, https://doi.org/10.1002/2015TC004085, 2016.
Roberts, N. M. W. and Walker, R. J.: U-Pb geochronology of calcite-mineralized
faults: Absolute timing of rift-related fault events on the northeast
Atlantic margin, Geology, 44, 531–534, 2016.
Roberts, N. M. W., Rasbury, E. T., Parrish, R. R., Smith, C. J., Horstwood,
M. S. A., and Condon, D. J.: A calcite reference material for LA-ICP-MS U-Pb
geochronology, Geochem., Geophy., Geosy., 18, 2807–2814, https://doi.org/10.1002/2016GC006784, 2017.
Roberts, N. M. W., Drost, K., Horstwood, M. S. A., Condon, D. J., Chew, D., Drake, H., Milodowski, A. E., McLean, N. M., Smye, A. J., Walker, R. J., Haslam, R., Hodson, K., Imber, J., Beaudoin, N., and Lee, J. K.: Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb carbonate geochronology: strategies, progress, and limitations, Geochronology, 2, 33–61, https://doi.org/10.5194/gchron-2-33-2020, 2020.
Scott, D. W.: Multivariate Density Estimation: Theory, Practice, and
Visualization, John Wiley and Sons, New York and Chicester, USA, 1992.
Vermeesch, P.: IsoplotR: A free and open toolbox for geochronology,
Geosci. Front., 9, 1479–1493, https://doi.org/10.1016/j.gsf.2018.04.001, 2018.
Wade, B. S., Pearson, P. N., Berggren, W. A., and Pälike, H.: Review and
revision of Cenozoic tropical planktonic foraminiferal biostratigraphy and
calibration to the geomagnetic polarity and astronomical time scale,
Earth-Sci. Rev., 104, 111–142, 2011.
Woodhead, J. D. and Hergt, J. M.: Strontium, neodymium and lead isotope
analyses of NIST glass certi?ed reference materials: SRM 610, 612, 614,
Geostandard. Newslett., 25, 261–266, https://doi.org/10.1111/j.1751-908X.2001.tb00601.x, 2001.
Zeitvogel, F. and Obst, M.: ScatterJn: An ImageJ Plugin for
Scatterplot-Matrix Analysis and Classification of Spatially Resolved
Analytical Microscopy Data, J. Open Res. Softw., 4, e5, https://doi.org/10.5334/jors.89,
2016.
Short summary
A new methodology for the micron-scale uranium–lead dating of carbonate minerals is proposed. It is based on the extraction of ages directly from pixel images (< 1 mm2) obtained by laser ablation coupled to a mass spectrometer. The ages are calculated with a robust linear regression through the pixel values. This methodology is compared to existing approaches.
A new methodology for the micron-scale uranium–lead dating of carbonate minerals is proposed. It...
Special issue