Articles | Volume 2, issue 2
https://doi.org/10.5194/gchron-2-283-2020
© Author(s) 2020. 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-2-283-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
| 
22 Oct 2020
Research article | Highlight paper |
| 22 Oct 2020
| 22 Oct 2020
Resolving multiple geological events using in situ Rb–Sr geochronology: implications for metallogenesis at Tropicana, Western Australia
Hugo K. H. Olierook
CORRESPONDING AUTHOR
School of Earth and Planetary Sciences, Curtin University, GPO Box
U1987, Perth, WA 6845, Australia
Timescales of Mineral Systems, Centre for Exploration Targeting – Curtin Node, Curtin University,
GPO Box U1987, Perth, WA 6845, Australia
John de Laeter Centre, Curtin University, GPO Box U1987, Perth, WA
6845, Australia
Kai Rankenburg
School of Earth and Planetary Sciences, Curtin University, GPO Box
U1987, Perth, WA 6845, Australia
John de Laeter Centre, Curtin University, GPO Box U1987, Perth, WA
6845, Australia
Stanislav Ulrich
AngloGold Ashanti Australia Ltd., 140 St. Georges Terrace, Perth, WA
6000, Australia
Christopher L. Kirkland
School of Earth and Planetary Sciences, Curtin University, GPO Box
U1987, Perth, WA 6845, Australia
Timescales of Mineral Systems, Centre for Exploration Targeting – Curtin Node, Curtin University,
GPO Box U1987, Perth, WA 6845, Australia
Noreen J. Evans
School of Earth and Planetary Sciences, Curtin University, GPO Box
U1987, Perth, WA 6845, Australia
John de Laeter Centre, Curtin University, GPO Box U1987, Perth, WA
6845, Australia
Stephen Brown
AngloGold Ashanti Australia Ltd., 140 St. Georges Terrace, Perth, WA
6000, Australia
Brent I. A. McInnes
John de Laeter Centre, Curtin University, GPO Box U1987, Perth, WA
6845, Australia
Alexander Prent
School of Earth and Planetary Sciences, Curtin University, GPO Box
U1987, Perth, WA 6845, Australia
John de Laeter Centre, Curtin University, GPO Box U1987, Perth, WA
6845, Australia
Jack Gillespie
School of Earth and Planetary Sciences, Curtin University, GPO Box
U1987, Perth, WA 6845, Australia
Bradley McDonald
School of Earth and Planetary Sciences, Curtin University, GPO Box
U1987, Perth, WA 6845, Australia
Miles Darragh
AngloGold Ashanti Australia Ltd., 140 St. Georges Terrace, Perth, WA
6000, Australia
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Romain Tartèse and Ian C. Lyon
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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
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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
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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
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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
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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
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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
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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
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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
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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.
Guilhem Hoareau, Fanny Claverie, Christophe Pecheyran, Christian Paroissin, Pierre-Alexandre Grignard, Geoffrey Motte, Olivier Chailan, and Jean-Pierre Girard
Geochronology, 3, 67–87, https://doi.org/10.5194/gchron-3-67-2021, https://doi.org/10.5194/gchron-3-67-2021, 2021
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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.
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
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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
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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
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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.
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
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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
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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
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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
Attendorn, H. G. and Bowen, R. N. C.: Rubidium-strontium dating, in:
Radioactive and Stable Isotope Geology, Springer, 159–191, 1997.
Baksi, A. K.: A quantitative tool for detecting alteration in undisturbed
rocks and minerals – I: Water, chemical weathering, and atmospheric argon,
Geol. Soc. Am. Spec. Pap., 430, 285–303,
https://doi.org/10.1130/2007.2430(15), 2007.
Blenkinsop, T. G. and Doyle, M. G.: Structural controls on gold
mineralization on the margin of the Yilgarn craton, Albany–Fraser orogen:
The Tropicana deposit, Western Australia, J. Struct. Geol., 67,
189–204, https://doi.org/10.1016/j.jsg.2014.01.013, 2014.
Bodorkos, S. and Clark, D. J.: Evolution of a crustal-scale transpressive
shear zone in the Albany–Fraser Orogen, SW Australia: 2. Tectonic history
of the Coramup Gneiss and a kinematic framework for Mesoproterozoic
collision of the West Australian and Mawson cratons, J. Metamorph.
Geol., 22, 713–731, 2004.
Brenan, J. M., Cherniak, D. J., and Rose, L. A.: Diffusion of osmium in
pyrrhotite and pyrite: implications for closure of the Re–Os isotopic
system, Earth Planet. Sc. Lett., 180, 399–413, https://doi.org/10.1016/S0012-821X(00)00165-5, 2000.
Cassidy, K. F., Groves, D. I., and McNaughton, N. J.: Late-Archean
granitoid-hosted lode-gold deposits, Yilgarn Craton, Western Australia:
deposit characteristics, crustal architecture and implications for ore
genesis, Ore Geol. Rev., 13, 65–102, 1998.
Charlier, B. L. A., Ginibre, C., Morgan, D., Nowell, G. M., Pearson, D. G.,
Davidson, J. P., and Ottley, C. J.: Methods for the microsampling and
high-precision analysis of strontium and rubidium isotopes at single crystal
scale for petrological and geochronological applications, Chem. Geol.,
232, 114–133, 2006.
Chen, C.-H., DePaolo, D. J., and Lan, C.-Y.: Rb Sr microchrons in the
Manaslu granite: implications for Himalayan thermochronology, Earth
Planet. Sc. Lett., 143, 125–135, 1996.
Cheng, P., Koyanagi, G. K., and Bohme, D. K.: On the chemical resolution of
the 87Rb+ (s0)/87Sr+ (s1) isobaric interference: A kinetic search for an
optimum reagent, Anal. Chim. Acta, 627, 148–153, 2008.
Clark, C., Kirkland, C. L., Spaggiari, C. V., Oorschot, C., Wingate, M. T.
D., and Taylor, R. J.: Proterozoic granulite formation driven by mafic
magmatism: An example from the Fraser Range Metamorphics, Western Australia,
Precambrian Res., 240, 1–21, https://doi.org/10.1016/j.precamres.2013.07.024, 2014.
Clark, D. J., Hensen, B. J., and Kinny, P. D.: Geochronological constraints
for a two-stage history of the Albany–Fraser Orogen, Western Australia,
Precambrian Res., 102, 155–183, https://doi.org/10.1016/S0301-9268(00)00063-2, 2000.
Daly, J. S., Aitcheson, S. J., Cliff, R. A., Gayer, R. A., and Rice, A. H.
N.: Geochronological evidence from discordant plutons for a late Proterozoic
orogen in the Caledonides of Finnmark, northern Norway, J.
Geol. Soc., 148, 29–40, 1991.
Dawson, G. C., Krapež, B., Fletcher, I. R., McNaughton, N. J., and
Rasmussen, B.: 1.2 Ga thermal metamorphism in the Albany–Fraser Orogen of
Western Australia: consequence of collision or regional heating by dyke
swarms?, J. Geol. Soc., 160, 29–37, https://doi.org/10.1144/0166-764901-119, 2003.
Del Moro, A., Puxeddu, M., di Brozolo, F. R., and Villa, I. M.: Rb-Sr and
K-Ar ages on minerals at temperatures of 300–400∘C
from deep wells in the Larderello geothermal field (Italy), Contrib.
Mineral. Petr., 81, 340–349, https://doi.org/10.1007/BF00371688, 1982.
Doyle, M. G., Kendall, B. M., and Gibbs, D.: Discovery and characteristics
of the Tropicana gold district, Geoscience Australia Record 2007/14,
186–190, 2007.
Doyle, M. G., Fletcher, I. R., Foster, J., Large, R. R., Mathur, R.,
McNaughton, N. J., Meffre, S., Muhling, J. R., Phillips, D., and Rasmussen,
B.: Geochronological constraints on the Tropicana gold deposit and
Albany-Fraser orogen, Western Australia, Economic Geology, 110, 355–386,
2015.
Eberlei, T., Habler, G., Wegner, W., Schuster, R., Körner, W.,
Thöni, M., and Abart, R.: Rb∕Sr isotopic and compositional retentivity
of muscovite during deformation, Lithos, 227, 161–178, https://doi.org/10.1016/j.lithos.2015.04.007, 2015.
Evans, J. A., Millar, I. L., and Noble, S. R.: Hydration during uplift is
recorded by reset Rb–Sr whole-rock ages, J. Geol. Soc.,
152, 209–212, 1995.
Ewing, T. A., Rubatto, D., Beltrando, M., and Hermann, J.: Constraints on
the thermal evolution of the Adriatic margin during Jurassic continental
break-up: U–Pb dating of rutile from the Ivrea–Verbano Zone, Italy,
Contrib. Mineral. Petr., 169, 44, https://doi.org/10.1007/s00410-015-1135-6, 2015.
Glodny, J., Bingen, B., Austrheim, H., Molina, J. F., and Rusin, A.: Precise
eclogitization ages deduced from Rb∕Sr mineral systematics: the Maksyutov
complex, Southern Urals, Russia, Geochim. Cosmochim. Ac., 66,
1221–1235, 2002.
Glodny, J., Austrheim, H., Molina, J. F., Rusin, A. I., and Seward, D.:
Rb∕Sr record of fluid-rock interaction in eclogites: The Marun-Keu complex,
Polar Urals, Russia, Geochim. Cosmochim. Ac., 67, 4353–4371, 2003.
Goldfarb, R. J., Groves, D. I., and Gardoll, S.: Orogenic gold and geologic
time: a global synthesis, Ore Geol. Rev., 18, 1–75, https://doi.org/10.1016/S0169-1368(01)00016-6, 2001.
Goscombe, B., Foster, D. A., Blewett, R., Czarnota, K., Wade, B.,
Groenewald, B., and Gray, D.: Neoarchaean metamorphic evolution of the
Yilgarn Craton: A record of subduction, accretion, extension and
lithospheric delamination, Precambrian Res., 335, 105441,
https://doi.org/10.1016/j.precamres.2019.105441, 2019.
Govindaraju, K.: Report (1968–1978) on two mica reference samples: biotite
Mica-Fe and phlogopite Mica-Mg, Geostandard. Newslett., 3, 3–24, 1979.
Hardwick, B.: Mineralised textures at the Tropicana Gold Mine, Western
Australia: Implications for genetic model and deportment of gold, MSc,
University of Tasmania, Hobart, Tasmania, 2020.
Harrison, T. M., Duncan, I., and McDougall, I.: Diffusion of 40Ar in
biotite: Temperature, pressure and compositional effects, Geochim.
Cosmochim. Ac., 49, 2461–2468, https://doi.org/10.1016/0016-7037(85)90246-7, 1985.
Hartnady, M. I. H., Kirkand, C. L., Smithies, R. H., Poujol, M., and Clark,
C.: Periodic Paleoproterozoic calc-alkaline magmatism at the south eastern
margin of the Yilgarn Craton; implications for Nuna configuration,
Precambrian Res., 332, 105400, https://doi.org/10.1016/j.precamres.2019.105400, 2019.
Hogmalm, K. J., Zack, T., Karlsson, A. K. O., Sjöqvist, A. S. L., and
Garbe-Schönberg, D.: In situ Rb–Sr and K–Ca dating by LA-ICP-MS/MS: an
evaluation of N2O and SF6 as reaction gases, J. Anal. Atom.
Spectrom., 32, 305–313, 2017.
Kalt, A., Grauert, B., and Baumann, A.: Rb-Sr and U-Pb isotope studies on
migmatites from the Schwarzwald (Germany): constraints on isotopic resetting
during Variscan high-temperature metamorphism, J. Metamorph.
Geol., 12, 667–680, 1994.
Kendall, B. M., Doyle, M. G., and Gibbs, D.: Tropicana: The discovery of a
new gold province in Western Australia, 2007 NewGenGold Conference, 19 November
2007, Perth, Australia, 85–95, 2007.
Kent, A. J. R., Cassidy, K. F., and Mark Fanning, C.: Archean gold
mineralization synchronous with the final stages of cratonization, Yilgarn
Craton, Western Australia, Geology, 24, 879–882, 1996.
Kent, A. J. R., Jacobsen, B., Peate, D. W., Waight, T. E., and Baker, J. A.:
Isotope Dilution MC-ICP-MS Rare Earth Element Analysis of Geochemical
Reference Materials NIST SRM 610, NIST SRM 612, NIST SRM 614, BHVO-2G,
BHVO-2, BCR-2G, JB-2, WS-E, W-2, AGV-1 and AGV-2, Geostand.
Geoanal. Res., 28, 417–429, https://doi.org/10.1111/j.1751-908X.2004.tb00760.x,
2004.
Kirkland, C. L., Daly, J. S., Eide, E. A., and Whitehouse, M. J.: Tectonic
evolution of the Arctic Norwegian Caledonides from a texturally- and
structurally-constrained multi-isotopic (Ar-Ar, Rb-Sr, Sm-Nd, U-Pb) study,
Am. J. Sci., 307, 459–526, https://doi.org/10.2475/02.2007.06, 2007.
Kirkland, C. L., Spaggiari, C. V., Pawley, M. J., Wingate, M. T. D.,
Smithies, R. H., Howard, H. M., Tyler, I. M., Belousova, E. A., and Poujol,
M.: On the edge: U–Pb, Lu–Hf, and Sm–Nd data suggests reworking of the
Yilgarn craton margin during formation of the Albany-Fraser Orogen,
Precambrian Res., 187, 223–247, https://doi.org/10.1016/j.precamres.2011.03.002, 2011.
Kirkland, C. L., Spaggiari, C. V., Smithies, R. H., Wingate, M. T. D.,
Belousova, E. A., Gréau, Y., Sweetapple, M. T., Watkins, R., Tessalina,
S., and Creaser, R.: The affinity of Archean crust on the
Yilgarn–Albany-Fraser Orogen boundary: implications for gold
mineralisation in the Tropicana Zone, Precambrian Res., 266, 260-281,
2015.
Kirkland, C. L., Yakymchuk, C., Szilas, K., Evans, N., Hollis, J., McDonald,
B., and Gardiner, N. J.: Apatite: a U-Pb thermochronometer or
geochronometer?, Lithos, 318–319, 143–157, https://doi.org/10.1016/j.lithos.2018.08.007, 2018.
Kirkland, C. L., Yakymchuk, C., Gardiner, N. J., Szilas, K., Hollis, J.,
Olierook, H., and Steenfelt, A.: Titanite petrochronology linked to phase
equilibrium modelling constrains tectono-thermal events in the Akia Terrane,
West Greenland, Chem. Geol., 536, 119467, https://doi.org/10.1016/j.chemgeo.2020.119467, 2020.
Kooijman, E., Mezger, K., and Berndt, J.: Constraints on the U–Pb
systematics of metamorphic rutile from in situ LA-ICP-MS analysis, Earth
Planet. Sc. Lett., 293, 321–330, https://doi.org/10.1016/j.epsl.2010.02.047, 2010.
Kröner, A., Braun, I., and Jaeckel, P.: Zircon geochronology of
anatectic melts and residues from a highgrade pelitic assemblage at Ihosy,
southern Madagascar: evidence for Pan-African granulite metamorphism,
Geol. Mag., 133, 311–323, 1996.
Liu, L., Wang, C., Cao, Y.-T., Chen, D.-L., Kang, L., Yang, W.-Q., and Zhu,
X.-H.: Geochronology of multi-stage metamorphic events: Constraints on
episodic zircon growth from the UHP eclogite in the South Altyn, NW China,
Lithos, 136, 10–26, 2012.
Ludwig, K.: User's manual for Isoplot version 3.75–4.15: a geochronological
toolkit for Microsoft, Excel Berkley Geochronological Center Special
Publication, 2012.
Martin, H., Smithies, R. H., Rapp, R., Moyen, J. F., and Champion, D.: An
overview of adakite, tonalite–trondhjemite–granodiorite (TTG), and
sanukitoid: relationships and some implications for crustal evolution,
Lithos, 79, 1–24, https://doi.org/10.1016/j.lithos.2004.04.048,
2005.
Matheney, R. K., Brookins, D. G., Wallin, E. T., Shafiqullah, M., and Damon,
P. E.: Incompletely reset Rb-Sr systems from a Cambrian red-rock granophyre
terrane, Florida Mountains, New Mexico, U.S.A, Chem. Geol., 86, 29–47,
https://doi.org/10.1016/0168-9622(90)90004-V, 1990.
McArthur, J. M., Rio, D., Massari, F., Castradori, D., Bailey, T. R.,
Thirlwall, M., and Houghton, S.: A revised Pliocene record for
marine-87Sr/86Sr used to date an interglacial event recorded in the Cockburn
Island Formation, Antarctic Peninsula, Palaeogeogr. Palaeoclim.,
242, 126–136, https://doi.org/10.1016/j.palaeo.2006.06.004, 2006.
Moens, L. J., Vanhaecke, F. F., Bandura, D. R., Baranov, V. I., and Tanner,
S. D.: Elimination of isobaric interferences in ICP-MS, using ion–molecule
reaction chemistry: Rb∕Sr age determination of magmatic rocks, a case study,
J. Anal. Atom. Spectrom., 16, 991–994, 2001.
Morrissey, L. J., Payne, J. L., Hand, M., Clark, C., Taylor, R., Kirkland,
C. L., and Kylander-Clark, A.: Linking the Windmill Islands, east Antarctica
and the Albany–Fraser Orogen: Insights from U–Pb zircon geochronology and
Hf isotopes, Precambrian Res., 293, 131–149, https://doi.org/10.1016/j.precamres.2017.03.005, 2017.
Morteani, G., Kostitsyn, Y. A., Gilg, H. A., Preinfalk, C., and
Razakamanana, T.: Geochemistry of phlogopite, diopside, calcite, anhydrite
and apatite pegmatites and syenites of southern Madagascar: evidence for
crustal silicocarbonatitic (CSC) melt formation in a Panafrican collisional
tectonic setting, Int. J. Earth Sci., 102, 627–645, https://doi.org/10.1007/s00531-012-0832-x, 2013.
Müller, W., Mancktelow, N. S., and Meier, M.: Rb–Sr microchrons of
synkinematic mica in mylonites: an example from the DAV fault of the Eastern
Alps, Earth Planet. Sc. Lett., 180, 385–397, 2000.
Nebel, O.: Rb–Sr Dating, in: Encyclopedia of Scientific Dating Methods,
edited by: Rink, W. J. and Thompson, J., Springer Netherlands, Dordrecht,
1–19, 2013.
Nelson, D. R., Myers, J. S., and Nutman, A. P.: Chronology and evolution of
the Middle Proterozoic Albany-Fraser Orogen, Western Australia, Aust.
J. Earth Sci., 42, 481–495, https://doi.org/10.1080/08120099508728218, 1995.
Occhipinti, S., Doyle, M., Spaggiari, C., Korsch, R., Cant, G., Martin, K.,
Kirkland, C., Savage, J., Less, T., and Bergin, L.: Preliminary
interpretation of the deep seismic reflection line 12GA-T1: northeastern
Albany-Fraser Orogen, Albany-Fraser Orogen seismic and magnetotelluric (MT)
workshop 2014: extended abstracts, Preliminary Edn., 44–59, 2014.
Occhipinti, S. A., Tyler, I. M., Spaggiari, C. V., Korsch, R. J., Kirkland,
C. L., Smithies, R. H., Martin, K., and Wingate, M. T. D.: Tropicana
translated: a foreland thrust system imbricate fan setting for c. 2520 Ma
orogenic gold mineralization at the northern margin of the Albany–Fraser
Orogen, Western Australia, Geological Society, London, Special Publications,
453, 225–245, 2018.
Olierook, H. K. H., Agangi, A., Plavsa, D., Reddy, S. M., Clark, C., Yao,
W.-H., Occhipinti, S. A., and Kylander-Clark, A. R. C.: Neoproterozoic
hydrothermal activity in the West Australian Craton related to Rodinia
assembly or breakup?, Gondwana Res., 68, 1–12, https://doi.org/10.1016/j.gr.2018.10.019, 2019a.
Olierook, H. K. H., Taylor, R. J. M., Erickson, T. M., Clark, C., Reddy, S.
M., Kirkland, C. L., Jahn, I., and Barham, M.: Unravelling complex geologic
histories using U–Pb and trace element systematics of titanite, Chem.
Geol., 504, 105–122, https://doi.org/10.1016/j.chemgeo.2018.11.004, 2019b.
Paton, C., Hellstrom, J., Paul, B., Woodhead, J., and Hergt, J.: Iolite:
Freeware for the visualisation and processing of mass spectrometric data,
J. Anal. Atom. Spectrom., 26, 2508–2518, 2011.
Rankenburg, K., Lassiter, J. C., and Brey, G.: Origin of megacrysts in
volcanic rocks of the Cameroon volcanic chain–constraints on magma genesis
and crustal contamination, Contrib. Mineral. Petr., 147,
129–144, 2004.
Rasmussen, B., Fletcher, I. R., and Muhling, J. R.: In situ U–Pb dating and
element mapping of three generations of monazite: unravelling cryptic
tectonothermal events in low-grade terranes, Geochim. Cosmochim.
Ac., 71, 670–690, 2007.
Renne, P. R., Balco, G., Ludwig, K. R., Mundil, R., and Min, K.: Response to
the comment by W. H. Schwarz et al. on “Joint determination of 40K decay
constants and 40Ar∗/40K for the Fish Canyon sanidine
standard, and improved accuracy for 40Ar∕39Ar geochronology” by PR
Renne et al. (2010), Geochim. Cosmochim. Ac., 75, 5097–5100, 2011.
Riley, G. H. and Compston, W.: Theoretical and technical aspects of Rb-Sr
geochronology, Geochim. Cosmochim. Ac., 26, 1255–1281, https://doi.org/10.1016/0016-7037(62)90055-8, 1962.
Scibiorski, E., Tohver, E., Jourdan, F., Kirkland, C. L., and Spaggiari, C.:
Cooling and exhumation along the curved Albany-Fraser orogen, Western
Australia, Lithosphere, 8, 551–563, https://doi.org/10.1130/l561.1, 2016.
Şengün, F., Bertrandsson Erlandsson, V., Hogmalm, J., and Zack, T.:
In situ Rb-Sr dating of K-bearing minerals from the orogenic Akçaabat
gold deposit in the Menderes Massif, Western Anatolia, Turkey, J.
Asian Earth Sci., 185, 104048, https://doi.org/10.1016/j.jseaes.2019.104048, 2019.
Smithies, R., Spaggiari, C., and Kirkland, C.: Building the crust of the
Albany-Fraser Orogen; constraints from granite geochemistry, Geological
Survey of Western Australia, Perth, WA, 2015.
Smits, R. G., Collins, W. J., Hand, M., Dutch, R., and Payne, J.: A
Proterozoic Wilson cycle identified by Hf isotopes in central Australia:
Implications for the assembly of Proterozoic Australia and Rodinia, Geology,
42, 231–234, https://doi.org/10.1130/g35112.1, 2014.
Spaggiari, C. V., Bodorkos, S., Barquero-Molina, M., Tyler, I. M., and
Wingate, M. T. D.: Interpreted bedrock geology of the south Yilgarn and
central Albany-Fraser orogen, Western Australia, Geological Survey of
Western Australia, Record, 10, 84 pp., 2009.
Spaggiari, C. V., Kirkland, C. L., Smithies, R. H., and Wingate, M. T. D.:
Tectonic links between Proterozoic sedimentary cycles, basin formation and
magmatism in the Albany–Fraser Orogen: Geological Survey of Western
Australia, Report, 2014.
Spaggiari, C. V., Kirkland, C. L., Smithies, R. H., Wingate, M. T. D., and
Belousova, E. A.: Transformation of an Archean craton margin during
Proterozoic basin formation and magmatism: The Albany–Fraser Orogen,
Western Australia, Precambrian Res., 266, 440–466, https://doi.org/10.1016/j.precamres.2015.05.036, 2015.
Stark, J. C., Wang, X.-C., Li, Z.-X., Rasmussen, B., Sheppard, S., Zi,
J.-W., Clark, C., Hand, M., and Li, W.-X.: In situ U-Pb geochronology and
geochemistry of a 1.13 Ga mafic dyke suite at Bunger Hills, East Antarctica:
The end of the Albany-Fraser Orogeny, Precambrian Res., 310, 76–92,
https://doi.org/10.1016/j.precamres.2018.02.023, 2018.
Wingate, M. T. D. and Pidgeon, R.: The Marnda Moorn LIP: A Late Mesoproterozoic Large Igneous Province in the
Yilgarn Craton, Western Australia July 2005 LIP of the Month, Large Igneous Provinces Commission, International Association of Volcanology and Chemistry of the Earth's Interior, available at: http://www.largeigneousprovinces.org/05jul (last access: 1 January 2020), 2005.
Tillberg, M., Drake, H., Zack, T., Hogmalm, J., and Åström, M.: In
Situ Rb-Sr Dating of Fine-grained Vein Mineralizations Using LA-ICP-MS,
Proced. Earth Plan. Sc., 17, 464–467, https://doi.org/10.1016/j.proeps.2016.12.117, 2017.
Tillberg, M., Drake, H., Zack, T., Kooijman, E., Whitehouse, M. J., and
Åström, M. E.: In situ Rb-Sr dating of slickenfibres in deep
crystalline basement faults, Sci. Rep., 10, 562, https://doi.org/10.1038/s41598-019-57262-5, 2020.
Tischendorf, G., Gottesmann, B., Förster, H.-J., and Trumbull, R. B.: On
Li-bearing micas: estimating Li from electron microprobe analyses and an
improved diagram for graphical representation, Mineral. Mag., 61,
809–834, 1997.
Tyler, I. M., Spaggiari, C. V., Occhipinti, S. A., Kirkland, C. L., and
Smithies, R. H.: Tropicana translated – late Archean to early
Paleoproterozoic gold mineralization in the Albany–Fraser Orogen, GSWA 2015
extended abstracts: promoting the prospectivity of Western Australia,
Geological Survey of Western Australia, 36–40, 2015.
Vanhaecke, F., De Wannemacker, G., Balcaen, L., and Moens, L.: The use of
dynamic reaction cell ICP mass spectrometry to facilitate Rb-Sr age
determination, Geological Society, London, Special Publications, 220,
173–181, 2003.
Villa, I. M., De Bièvre, P., Holden, N. E., and Renne, P. R.: IUPAC-IUGS
recommendation on the half life of 87Rb, Geochim. Cosmochim. Ac.,
164, 382–385, https://doi.org/10.1016/j.gca.2015.05.025, 2015.
Wang, X.-C., Li, Z.-X., Li, J., Pisarevsky, S. A., and Wingate, M. T. D.:
Genesis of the 1.21 Ga Marnda Moorn large igneous province by
plume–lithosphere interaction, Precambrian Res., 241, 85–103,
https://doi.org/10.1016/j.precamres.2013.11.008, 2014.
Woodhead, J. D. and Hergt, J. M.: Strontium, neodymium and lead isotope
analyses of NIST glass certified reference materials: SRM 610, 612, 614,
Geostandard. Newslett., 25, 261–266, 2001.
Zack, T. and Hogmalm, K. J.: Laser ablation Rb∕Sr dating by online chemical
separation of Rb and Sr in an oxygen-filled reaction cell, Chem. Geol.,
437, 120–133, https://doi.org/10.1016/j.chemgeo.2016.05.027,
2016.
Zack, T. and Kooijman, E.: Petrology and Geochronology of Rutile, Rev.
Mineral. Geochem., 83, 443–467, https://doi.org/10.2138/rmg.2017.83.14, 2017.
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.
Using a relatively new dating technique, in situ Rb–Sr geochronology, we constrain the ages of...
