Articles | Volume 8, issue 3
https://doi.org/10.5194/gchron-8-387-2026
© Author(s) 2026. 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-8-387-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Jul 2026
Research article |
| 08 Jul 2026
| 08 Jul 2026
Dating circulations of hydrothermal fluids in the crystalline basements of unconformity-related metal deposits using in situ Rb ∕ Sr geochronology: proof of concept
Quentin Boulogne
CORRESPONDING AUTHOR
Université de Lorraine, CNRS, GeoRessources, F-54000 Nancy, France
LabCom CREGU, GeoRessources, CNRS, Université de Lorraine, Vandœuvre-lès-Nancy, France
Gaétan Milesi
Université de Lorraine, CNRS, GeoRessources, F-54000 Nancy, France
LabCom CREGU, GeoRessources, CNRS, Université de Lorraine, Vandœuvre-lès-Nancy, France
Chantal Peiffert
Université de Lorraine, CNRS, GeoRessources, F-54000 Nancy, France
Emmy Fischer
Université de Lorraine, CNRS, GeoRessources, F-54000 Nancy, France
LabCom CREGU, GeoRessources, CNRS, Université de Lorraine, Vandœuvre-lès-Nancy, France
Christophe Ballouard
Université de Lorraine, CNRS, GeoRessources, F-54000 Nancy, France
Mehdi Serdoun
Université de Lorraine, CNRS, GeoRessources, F-54000 Nancy, France
Orano Canada, Saskatoon, Canada
Thomas Obin
Université de Lorraine, CNRS, GeoRessources, F-54000 Nancy, France
LabCom CREGU, GeoRessources, CNRS, Université de Lorraine, Vandœuvre-lès-Nancy, France
Andreï Lecomte
Université de Lorraine, CNRS, GeoRessources, F-54000 Nancy, France
Pierre Martz
Orano Canada, Saskatoon, Canada
Andrew Kaczowka
Cameco Corporation, Saskatoon, Canada
Julien Mercadier
Université de Lorraine, CNRS, GeoRessources, F-54000 Nancy, France
LabCom CREGU, GeoRessources, CNRS, Université de Lorraine, Vandœuvre-lès-Nancy, France
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Marie Gerardin, Gaétan Milesi, Julien Mercadier, Michel Cathelineau, and Danièle Bartier
Geosci. Instrum. Method. Data Syst., 13, 309–323, https://doi.org/10.5194/gi-13-309-2024, https://doi.org/10.5194/gi-13-309-2024, 2024
Short summary
Short summary
Clay minerals are helpful markers of low-temperature geological processes. The combination of their characterization with geochronology is a powerful tool to constrain physical and chemical processes, improving our understanding of the evolution of the Earth system. This paper aims to present the platform along with the associated methods developed at the GeoRessources laboratory (University of Lorraine) to separate and characterize clay minerals and date illites using the K–Ar method.
Delphine Charpentier, Gaétan Milesi, Pierre Labaume, Ahmed Abd Elmola, Martine Buatier, Pierre Lanari, and Manuel Muñoz
Solid Earth, 15, 1065–1086, https://doi.org/10.5194/se-15-1065-2024, https://doi.org/10.5194/se-15-1065-2024, 2024
Short summary
Short summary
Understanding the fluid circulation in fault zones is essential to characterize the thermochemical evolution of hydrothermal systems in mountain ranges. The study focused on a paleo-system of the Pyrenees. Phyllosilicates permit us to constrain the evolution of temperature and redox of fluids at the scale of the fault system. A scenario is proposed and involves the circulation of a single highly reducing hydrothermal fluid (~300 °C) that evolves due to redox reactions.
Cited articles
Adlakha, E. E. and Hattori, K.: Compositional variation and timing of aluminum phosphate-sulfate minerals in the basement rocks along the P2 fault and in association with the McArthur River uranium deposit, Athabasca Basin, Saskatchewan, Canada, Am. Mineral., 100, 1386–1399, https://doi.org/10.2138/am-2015-5069, 2015.
Adlakha, E. and Hattori, K.: Thermotectonic events recorded by U–Pb geochronology and Zr-in-rutile thermometry of Ti oxides in basement rocks along the P2 fault, eastern Athabasca Basin, Saskatchewan, Canada, Geol. Soc. Am. Bull., 134, 567–576, https://doi.org/10.1130/B35820.1, 2021.
Aldega, L., Viola, G., Casas-Sainz, A., Marcén, M., Román-Berdiel, T., and van der Lelij, R.: Unraveling Multiple Thermotectonic Events Accommodated by Crustal-Scale Faults in Northern Iberia, Spain: Insights From K–Ar Dating of Clay Gouges, Tectonics, 38, 3629–3651, https://doi.org/10.1029/2019TC005585, 2019.
Alexandre, P., Kyser, K., Polito, P., and Thomas, D.: Alteration mineralogy and stable isotope geochemistry of Paleoproterozoic basement-hosted unconformity-type uranium deposits in the Athabasca Basin, Canada, Econ. Geol., 100, 1547–1563, https://doi.org/10.2113/gsecongeo.100.8.1547, 2005.
Alexandre, P., Kyser, K., Thomas, D., Polito, P., and Marlat, J.: Geochronology of unconformity-related uranium deposits in the Athabasca Basin, Saskatchewan, Canada and their integration in the evolution of the basin, Miner. Deposita, 44, 41-59, https://doi.org/10.1007/s00126-007-0153-3, 2009.
Alexandre, P., Jiricka, D., and Witt, G.: Formation and evolution of the Centennial unconformity-related uranium deposit in the south-central Athabasca Basin, Canada, Econ. Geol., 107, 385–400, https://doi.org/10.2113/econgeo.107.3.385, 2012.
Anders, M. H., Laubach, S. E., and Scholz, C. H.: Microfractures: A review, J. Struct. Geol., 69, 377–394, https://doi.org/10.1016/j.jsg.2014.05.011, 2014.
Ansdell, K. M.: Tectonic evolution of the Manitoba-Saskatchewan segment of the Paleoproterozoic Trans-Hudson Orogen, Canada, Can. J. Earth Sci., 42, 741–759, https://doi.org/10.1139/e05-035, 2005.
Annesley, I., Madore, C., and Krogh, T. E.: U–Pb zircon, titanite, and monazite ages from the Wollaston Domain: A summary, Summary of Investigations, Saskatchewan Geological Survey, Saskatchewan Energy and mines, Miscellaneous Report 92-4, 61–65, https://pubsaskdev.blob.core.windows.net/pubsask-prod/88117/88117-Annesley-Madore-Krogh_1992_MiscRep92-4.pdf (last access: 3 July 2026), 1992.
Annesley, I. R. and Madore, C.: A geological study of the Wollaston-Mudjatik domain boundary in the Wollaston Lake area, Hearne Province, Saskatchewan, Saskatchewan Research Council, Publ. R-1230-6-C-94, 162 pp., https://scholar-google-com.bases-doc.univ-lorraine.fr/citations?view_op=view_citation&hl=fr&user=b-WIUOcAAAAJ&cstart=100&pagesize=100&sortby=pubdate&citation_for_view=b-WIUOcAAAAJ:k_IJM867U9cC (last access: 3 July 2026), 1994.
Annesley, I. R., Madore, C., and Shi, R.: Thermotectonic evolution of the Wollaston EAGLE Project Area, Saskatchewan Research Council, Publ. R-1420-2-C-97, Part 1, 1–62, https://scholar-google-com.bases-doc.univ-lorraine.fr/citations?view_op=view_citation&hl=fr&user=b-WIUOcAAAAJ&cstart=100&pagesize=100&sortby=pubdate&citation_for_view=b-WIUOcAAAAJ:CHSYGLWDkRkC (last access: 3 July 2026), 1997a.
Annesley, I., Madore, C., Shi, R., and Krogh, T.: U–Pb geochronology of thermotectonic events in the Wollaston Lake area, Wollaston Domain: A summary of 1994–1996 results, Summary of Investigations 1997, Saskatchewan Geological Survey, Saskatchewan Energy and Mines, 1, 162–173, https://www.researchgate.net/publication/273767482_U-Pb_geochronology_of_thermotectonic_events_in_the_Wollaston_Lake_area_Wollaston_Domain_A_summary_of_1994-1996_results (last access: 3 July 2026), 1997b.
Annesley, I. R., Madore, C., and Krogh, T. E.: U–Pb geochronology of peraluminous pegmatites from theWollaston Lake area, northern Saskatchewan, Geol. Assoc. Can.-Mineral. Assoc. Can. Annual Meeting, Program with Abstracts, 22, A-4, 1997c.
Annesley, I. R., Madore, C., Shi, R., and Krogh, T. E: U–Pb geochronology and thermotectonic history ofthe Wollaston Domain in the Wollaston Lake area, Hearne Province, Saskatchewan, Geol. Assoc. Can.-Mineral. Assoc. Can. Annual Meeting, Program with Abstracts, 21, A-4, 1999a.
Annesley, I. R., Madore, C., Krogh, T. E., Kwok, Y. Y., and Kamo, S. L.: New U–Pb zircon and monazitegeochronological results for Archean and Paleoproterozoic basement to the southeastern part of the AthabascaBasin, Saskatchewan, Saskatchewan Geological Survey, Misc. Rep. 99-4.2, 90–99, https://www.researchgate.net/publication/273695990_New_U-Pb_zircon_and_monazite_geochronological_results_for_Archean_and_Paleoproterozoic_basement_to_the_southeastern_part_of_the_Athabasca_Basin (last access: 3 July 2026), 1999b.
Annesley, I. R., Madore, C., and Portella, P.: Geology and thermotectonic evolution of the western margin of the Trans-Hudson Orogen: evidence from the eastern sub-Athabasca basement, Saskatchewan, Can. J. Earth Sci., 42, 573–597, https://doi.org/10.1139/e05-034, 2005.
Beaufort, D., Patrier, P., Laverret, E., Bruneton, P., and Mondy, J.: Clay Alteration Associated with Proterozoic Unconformity-Type Uranium Deposits in the East Alligator Rivers Uranium Field, Northern Territory, Australia, Econ. Geol., 100, 515–536, https://doi.org/10.2113/gsecongeo.100.3.515, 2005.
Bevan, D., Coath, C. D., Lewis, J., Schwieters, J., Lloyd, N., Craig, G., Wehrs, H., and Elliott, T.: In situ Rb–Sr dating by collision cell, multicollection inductively-coupled plasma mass-spectrometry with pre-cell mass-filter, (CC-MC-ICPMS/MS), J. Anal. Atom. Spectrom., 36, 917–931, https://doi.org/10.1039/D1JA00006C, 2021.
Boiron, M.-C., Cathelineau, M., and Richard, A.: Fluid flows and metal deposition near basement /cover unconformity: lessons and analogies from Pb-Zn-F-Ba systems for the understanding of Proterozoic U deposits, Geofluids, 10, 270–292, https://doi.org/10.1111/j.1468-8123.2010.00289.x, 2010.
Boschetti, L., Boullerne, C., Rolland, Y., Schwartz, S., Milesi, G., Bienveignant, D., Macret, E., Charpentier, D., Münch, P., Mercadier, J., Iemmolo, A., Lanari, P., Rossi, M., and Mouthereau, F.: Shear zone memory revealed by in-situ Rb–Sr and 40Ar
Bickford, M., Chiarenzelli, J., Van Schmus, W., Collerson, K. D., and Lewry, J.: Proterozoic collisional tectonism in the Trans-Hudson orogen, Saskatchewan, Geology, 18, 14–18, 1990.
Bickford, M. E., Mock, T. D., Steinhart Iii, W. E., Collerson, K. D., and Lewry, J. F.: Origin of the Archean Sask craton and its extent within the Trans-Hudson orogen: evidence from Pb and Nd isotopic compositions of basement rocks and post-orogenic intrusions, Can. J. Earth Sci., 42, 659–684, https://doi.org/10.1139/e04-064, 2005.
Bishop, C. M. and Nasrabadi, N. M.: Pattern recognition and machine learning, Springer, ISBN 978-0-387-31073-2, 2006.
Brigatti, M. F. and Guggenheim, S.: Mica Crystal Chemistry and the Influence of Pressure, Temperature, and Solid Solution on Atomistic Models, Rev. Mineral. Geochem., 46, 1–97, https://doi.org/10.2138/rmg.2002.46.01, 2002.
Brooks, C., Hart, S. R., Hofmann, A., and James, D. E.: Rb–Sr mantle isochrons from oceanic regions, Earth Planet. Sc. Lett., 32, 51–61, https://doi.org/10.1016/0012-821X(76)90184-9, 1976.
Bruneton, P.: Geological environment of the Cigar Lake uranium deposit, Can. J. Earth Sci., 30, 653–673, https://doi.org/10.1139/e93-054, 1993.
Campanha, G. A. C., Hueck, M., Wemmer, K., Esteves, M. C. B., Joncew, H. C., Faleiros, F. M., and Veloso, R. S. S.: Foreland deformation of Brasiliano orogens at the eastern and western margins of the São Francisco Craton: K–Ar illite dating of the Araçuaí and Brasília fold-and-thrust belts, J. Geol. Soc., 183, jgs2025-138, https://doi.org/10.1144/jgs2025-138, 2025.
Card, C.: The Origins of Anomalously Graphitic Rocks and Quartzite Ridges in the Basement to the Southeastern Athabasca Basin, https://www.researchgate.net/publication/272175876_The_Origins_of_Anomalously_Graphitic_Rocks_and_Quartzite_Ridges_in_the_Basement_to_the_Southeastern_Athabasca_Basin (last access: 3 July 2026), 2012.
Card, C.: Altered Pelitic Gneisses and Associated “Quartzite Ridges” Beneath the Southeastern Athabasca Basin: Alteration Facies and their Relationship to Uranium Deposits along the Wollaston-Mudjatik Transition, https://www.researchgate.net/publication/272175864_Altered_Pelitic_Gneisses_and_Associated_Quartzite_Ridges_Beneath_the_Southeastern_Athabasca_Basin_Alteration_Facies_and_their_Relationship_to_Uranium_Deposits_along_the_Wollaston-Mudjatik_Transition (last access: 3 July 2026), 2014.
Card, C. and Noll, J.: Host-Rock Protoliths, Pre-Ore Metasomatic Mineral Assemblages and Textures, and Exotic Rocks in the Western Athabasca Basin: Ore-System Controls and Implications for the Unconformity-Related Uranium Model, in: Summary of Investigations 2016, 2, Saskatchewan Geological Survey, Sask. Ministry of the Economy, Misc. Rep. 2016-4.2, https://doi.org/10.13140/RG.2.2.26473.70241, 2016.
Carl, C., Pechmann, E. V., Höhndorf, A., and Ruhrmann, G.: Mineralogy and U
Cathelineau, M., Boiron, M.-C., Fourcade, S., Ruffet, G., Clauer, N., Belcourt, O., Coulibaly, Y., Banks, D. A., and Guillocheau, F.: A major Late Jurassic fluid event at the basin/basement unconformity in western France: 40Ar
Chen, M., Chen, G., An, P., Zhang, L., and Wang, Y.: In situ illite Rb–Sr dating indicates the coevality of Carlin-type gold deposits inside and around the isolated carbonate platform in western Guangxi, China, Ore Geol. Rev., 165, 105905, https://doi.org/10.1016/j.oregeorev.2024.105905, 2024.
Cherniak, D. J. and Watson, E. B.: Pb diffusion in zircon, Chem. Geol., 172, 5–24, https://doi.org/10.1016/S0009-2541(00)00233-3, 2001.
Cherniak, D. J., Watson, E. B., Grove, M., and Harrison, T. M.: Pb diffusion in monazite: a combined RBS/SIMS study, Geochim. Cosmochim. Ac., 68, 829-840, https://doi.org/10.1016/j.gca.2003.07.012, 2004.
Chi, G., Li, Z., Chu, H., Bethune, K. M., Quirt, D. H., Ledru, P., Normand, C., Card, C., Bosman, S., Davis, W. J., and Potter, E. G.: A SHALLOW-BURIAL MINERALIZATION MODEL FOR THE UNCONFORMITY-RELATED URANIUM DEPOSITS IN THE ATHABASCA BASIN, Econ. Geol., 113, 1209–1217, https://doi.org/10.5382/econgeo.2018.4588, 2018.
Chiarenzelli, J.: Petrogenesis and tectonic significance of the Guncoat and Nistowiak gneisses, Glennie Lake Domain, northern Saskatchewan, unpublished PhD thesis, University of Kansas, 229, 1989.
Chiarenzelli, J., Aspler, L., Villeneuve, M., and Lewry, J.: Early Proterozoic Evolution of the Saskatchewan Craton and Its Allochthonous Cover, Trans-Hudson Orogen, J. Geol., 106, 247–268, https://doi.org/10.1086/516020, 1998.
Clauer, N., Środoń, J., Francu, J., and Šucha, V.: K–Ar dating of illite fundamental particles separated from illite-smectite, Clay Miner., 32, 181–196, https://doi.org/10.1180/claymin.1997.032.2.02, 1997.
Clauer, N., Mercadier, J., Patrier, P., Laverret, E., and Bruneton, P.: Relating unconformity-type uranium mineralization of the Alligator Rivers Uranium Field (Northern Territory, Australia) to the regional Proterozoic tectono-thermal activity: An illite K–Ar dating approach, Precambrian Res., 269, 107–121, https://doi.org/10.1016/j.precamres.2015.08.007, 2015.
Cloutier, J., Kyser, K., Olivo, G. R., Alexandre, P., and Halaburda, J.: The Millennium Uranium Deposit, Athabasca Basin, Saskatchewan, Canada: An Atypical Basement-Hosted Unconformity-Related Uranium Deposit, Econ. Geol., 104, 815–840, https://doi.org/10.2113/gsecongeo.104.6.815, 2009.
Cloutier, J., Kyser, K., Olivo, G. R., and Brisbin, D.: Geochemical, isotopic, and geochronlologic constraints on the formation of the Eagle Point basement-hosted uranium deposit, Athabasca Basin, Saskatchewan, Canada and recent remobilization of primary uraninite in secondary structures, Miner Deposita, 46, 35–56, https://doi.org/10.1007/s00126-010-0308-5, 2011.
Corrigan, D.: Paleoproterozoic crustal evolution and tectonics processes: Insights from the LITHOPROBE program in the Trans-Hudson orogen, Canada, Tectonic Styles in Canada: The LITHOPROBE Perspective, 49, 237–284, 2012.
Corrigan, D., Hajnal, Z., Németh, B., and Lucas, S. B.: Tectonic framework of a Paleoproterozoic arc-continent to continent-continent collisional zone, Trans-Hudson Orogen, from geological and seismic reflection studies, Can. J. Earth Sci., 42, 421–434, https://doi.org/10.1139/e05-025, 2005.
Corrigan, D., Pehrsson, S., Wodicka, N., and De Kemp, E.: The Palaeoproterozoic Trans-Hudson Orogen: a prototype of modern accretionary processes, in: Ancient Orogens and Modern Analogues, edited by: Murphy, J. B., Keppie, J. D., and Hynes, A. J., Geological Society of London, Special Publication 327, 457–479, https://doi.org/10.1144/SP327.19, 2009
Creaser, R. and Stasiuk, L. D.: Depositional age of the Douglas Formation, Northern Saskatchewan, determined by Re-Os geochronology, Bulletin of the Geological Survey of Canada, 588, 341–346, https://doi.org/10.4095/223779, 2007.
Cumming, G. L. and Krstic, D.: The age of unconformity-related uranium mineralization in the Athabasca Basin, northern Saskatchewan, Can. J. Earth Sci., 29, 1623–1639, https://doi.org/10.1139/e92-128, 1992.
Cuney, M. and Kyser, K.: Geology and geochemistry of uranium and thorium deposits, Mineralogical Association of Canada, https://doi.org/10.3749/9780921294726, 2015.
DePaolo, D. J.: Trace element and isotopic effects of combined wallrock assimilation and fractional crystallization, Earth Planet. Sc. Lett., 53, 189–202, https://doi.org/10.1016/0012-821X(81)90153-9, 1981.
Derome, D., Cathelineau, M., Cuney, M., Fabre, C., Lhomme, T., and Banks, D. A.: Mixing of Sodic and Calcic Brines and Uranium Deposition at McArthur River, Saskatchewan, Canada: A Raman and Laser-Induced Breakdown Spectroscopic Study of Fluid Inclusions, Econ. Geol., 100, 1529–1545, https://doi.org/10.2113/gsecongeo.100.8.1529, 2005.
Davis, W., Gall, Q., Jefferson, C. W., and Rainbird, R.: Fluorapatite in the Paleoproterozoic Thelon Basin: Structural-stratigraphic context, in situ ion microprobe U–Pb ages, and fluid-flow history, Geol. Soc. Am. Bull., 123, 1056–1073, https://doi.org/10.1130/B30163.1, 2011.
Dickin, A. P.: Radiogenic Isotope Geology, 3rd ed., Cambridge University Press, https://doi.org/10.1017/9781316163009, 2018.
Dodson, M. H.: Closure temperature in cooling geochronological and petrological systems, Contr. Mineral. Petrol., 40, 259–274, https://doi.org/10.1007/BF00373790, 1973.
Drake, H., Tillberg, M., Reinhardt, M., Whitehouse, M. J., and Kooijman, E.: In Situ Rb
Eberlei, T., Habler, G., Wegner, W., Schuster, R., Körner, W., Thöni, M., and Abart, R.: Rb
Eisele, J. and Isachsen, C. E.: Crustal Growth in Southern Arizona: U–Pb Geochronologic and Sm-Nd Isotopic Evidence for Addition of the Paleoproterozoic Cochise Block to the Mazatzal Province, Am. J. Sci., 301, 773–797, https://doi.org/10.2475/ajs.301.9.773, 2001.
Etheridge, M. A., Wall, V. J., and Vernon, R. H.: The role of the fluid phase during regional metamorphism and deformation, J. Metamorph. Geol., 1, 205–226, https://doi.org/10.1111/j.1525-1314.1983.tb00272.x, 1983.
Evans, J., MILLAR, I., and NOBLE, S.: Hydration during uplift is recorded by reset Rb–Sr whole-rock ages, J. Geol. Soc., 152, 209–212, https://doi.org/10.1144/gsjgs.152.2.0209, 1995.
Faulkner, D. R., Jackson, C. A. L., Lunn, R. J., Schlische, R. W., Shipton, Z. K., Wibberley, C. A. J., and Withjack, M. O.: A review of recent developments concerning the structure, mechanics and fluid flow properties of fault zones, J. Struct. Geol., 32, 1557–1575, https://doi.org/10.1016/j.jsg.2010.06.009, 2010.
Faure, G. and Mensing, T. M.: Isotopes: Principles and Applications, Third edition, John Wiley & Sons, Inc, Hoboken, New Jersey, ISBN 978-0-471-38437-3, 897 pp., 2013.
Fayek, M. and Kyser, T. K.: Characterization of multiple fluid-flow events and rare-earth-element mobility associated with formation of unconformity-type uranium deposits in the Athabasca Basin, Saskatchewan, Can. Mineral., 35, 627–658, 1997.
Fayek, M. and Riciputi, L.: U and Pb isotope analysis of uranium minerals by ion microprobe and the geochronology of McArthur River and Sue Zone uranium deposits, Saskatchewan, Canada, Can. Mineral., 40, 1553–1569, https://doi.org/10.2113/gscanmin.40.6.1553, 2002.
Fayek, M., Harrison, T. M., Ewing, R. C., Grove, M., and Coath, C. D.: O and Pb isotopic analyses of uranium minerals by ion microprobe and U–Pb ages from the Cigar Lake deposit, Chem. Geol., 185, 205–225, https://doi.org/10.1016/S0009-2541(01)00401-6, 2002.
Fraley, C. and Raftery, A. E.: Model-Based Clustering, Discriminant Analysis, and Density Estimation, J. Am. Stat. Assoc., 97, 611–631, https://doi.org/10.1198/016214502760047131, 2002.
Frey, M., Bossennec, C., Seib, L., Bär, K., Schill, E., and Sass, I.: Interdisciplinary fracture network characterization in the crystalline basement: a case study from the Southern Odenwald, SW Germany, Solid Earth, 13, 935–955, https://doi.org/10.5194/se-13-935-2022, 2022.
Furlanetto, F., Thorkelson, D. J., Daniel Gibson, H., Marshall, D. D., Rainbird, R. H., Davis, W. J., Crowley, J. L., and Vervoort, J. D.: Late Paleoproterozoic terrane accretion in northwestern Canada and the case for circum-Columbian orogenesis, Precambrian Res., 224, 512–528, https://doi.org/10.1016/j.precamres.2012.10.010, 2013.
Furlanetto, F., Thorkelson, D. J., Rainbird, R. H., Davis, W. J., Gibson, H. D., and Marshall, D. D.: The Paleoproterozoic Wernecke Supergroup of Yukon, Canada: Relationships to orogeny in northwestern Laurentia and basins in North America, East Australia, and China, Gondwana Res., 39, 14–40, https://doi.org/10.1016/j.gr.2016.06.007, 2016.
Galbraith, R. F.: Graphical Display of Estimates Having Differing Standard Errors, Technometrics, 30, 271–281, https://doi.org/10.2307/1270081, 1988.
Galbraith, R. F.: The radial plot: Graphical assessment of spread in ages, International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 17, 207–214, https://doi.org/10.1016/1359-0189(90)90036-W, 1990.
Gerardin, M., Milesi, G., Mercadier, J., Cathelineau, M., and Bartier, D.: Development of an integrated analytical platform for clay mineral separation, characterization and K–Ar dating, Geosci. Instrum. Method. Data Syst., 13, 309–323, https://doi.org/10.5194/gi-13-309-2024, 2024.
Glodny, J. and Grauert, B.: Evolution of a hydrothermal fluid-rock interaction system as recorded by Sr isotopes: A case study from the Schwarzwald, SW Germany, Miner. Petrol., 95, 163–178, https://doi.org/10.1007/s00710-008-0034-1, 2009.
Glodek, M., Schels, M., and Schwenker, F.: Ensemble Gaussian mixture models for probability density estimation, Comput. Stat., 28, 127–138, https://doi.org/10.1007/s00180-012-0374-5, 2013.
Glorie, S., Gilbert, S. E., Hand, M., and Lloyd, J. C.: Calibration methods for laser ablation Rb–Sr geochronology: comparisons and recommendation based on NIST glass and natural reference materials, Geochronology, 6, 21–36, https://doi.org/10.5194/gchron-6-21-2024, 2024.
Grand'Homme, A., Janots, E., Bosse, V., Seydoux-Guillaume, A. M., and De Ascenção Guedes, R.: Interpretation of U-Th-Pb in-situ ages of hydrothermal monazite-(Ce) and xenotime-(Y): evidence from a large-scale regional study in clefts from the western alps, Miner. Petrol., 110, 787–807, https://doi.org/10.1007/s00710-016-0451-5, 2016.
Gyomlai, T., Agard, P., Herviou, C., Jolivet, L., Monié, P., Mendes, K., and Iemmolo, A.: In situ Rb–Sr and 40Ar-39Ar dating of distinct mica generations in the exhumed subduction complex of the Western Alps, Contrib. Mineral. Petrol., 178, 58, https://doi.org/10.1007/s00410-023-02042-8, 2023.
Halter, G.: Zonalite des alterations dans l'environnement des gisements d'uranium associes a la discordance du proterozoique moyen (saskatchewan, canada), These de doctorat, Université Louis Pasteur (Strasbourg), 1971–2008, https://theses.fr/1988STR13078 (last access: 3 July 2026), 1988.
Hastie, T., Friedman, J., and Tibshirani, R.: The Elements of Statistical Learning, Springer New York, New York, NY, https://doi.org/10.1007/978-0-387-21606-5, 2001.
Hobson, G. D., Geological Survey of Canada, and MacAulay, H. A.: A Seismic Reconnaissance Survey of the Athabasca Formation, Alberta and Saskatchewan (part of 74), Department of Energy, Mines and Resources, 36 pp., https://publications.gc.ca/collections/collection_2016/rncan-nrcan/M44-69-18-eng.pdf (last access: 6 July 2026), 1969.
Hoeve, J. and Sibbald, T. I. I.: On the genesis of Rabbit Lake and other unconformity-type uranium deposits in northern Saskatchewan, Canada, Econ. Geol., 73, 1450–1473, https://doi.org/10.2113/gsecongeo.73.8.1450, 1978.
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, https://doi.org/10.1039/C6JA00362A, 2017.
Holness, M.: PARNELL, J. (Ed.): Dating and Duration of Fluid Flow and Fluid-Rock Interaction. Geological Society Special Publication no. 144. vi+284 pp., ISBN 1 86239 019 3, Geological Magazine, 137, 705–712, https://doi.org/10.1017/S0016756800274736, 2000.
Huang, C., Wang, H., Xie, L., Xu, L., Wu, S., Yang, Y., and Yang, J.: High-precision Rb–Sr isotope analysis with Neoma MS/MS: Enhancing in situ geochronology by laser ablation, Spectrochim. Acta Part B, 224, 107117, https://doi.org/10.1016/j.sab.2025.107117, 2025.
Huang, Y., Qi, X., Wu, Q., Li, J., Ren, M., Duan, L., Xiong, T., Yang, Z., Zhao, Y., Ciren, L., Wei, W., Duan, J., and Yan, M.: In Situ Rb-Sr Dates of Muscovite and Sulfur Isotope of Pyrite from the Yangshan Gold Deposit in Western Qinling, China, Acta Geol. Sin.-Engl., 97, 1475–1489, https://doi.org/10.1111/1755-6724.15091, 2023.
Hueck, M., Wemmer, K., Ksienzyk, A. K., Kuehn, R., and Vogel, N.: Potential, premises, and pitfalls of interpreting illite argon dates – A case study from the German Variscides, Earth-Sci. Rev., 232, 104133, https://doi.org/10.1016/j.earscirev.2022.104133, 2022.
Jeanneret, P., Goncalves, P., Durand, C., Trap, P., Marquer, D., Quirt, D., and Ledru, P.: Tectono-metamorphic evolution of the pre-Athabasca basement within the Wollaston–Mudjatik Transition Zone, Saskatchewan, Can. J. Earth Sci., 53, 231–259, https://doi.org/10.1139/cjes-2015-0136, 2016.
Jeanneret, P., Goncalves, P., Durand, C., Poujol, M., Trap, P., Marquer, D., Quirt, D., and Ledru, P.: Geochronological constraints on the trans-Hudsonian tectono-metamorphic evolution of the pre-Athabasca basement within the Wollaston-Mudjatik Transition Zone, Saskatchewan, Precambrian Res., 301, 152–178, https://doi.org/10.1016/j.precamres.2017.07.019, 2017.
Jefferson, C. W., Thomas, D. J., Gandhi, S. S., Ramaekers, P., Delaney, G., Brisbin, D., Cutts, C., Portella, P., and Olson, R. A.: Unconformity-associated uranium deposits of the Athabasca Basin, Saskatchewan and Alberta, Geological Survey of Canada, Bulletin 588, 23–67, https://doi.org/10.4095/223744, 2007.
Jegal, Y., Zimmermann, C., Reisberg, L., Yeghicheyan, D., Cloquet, C., Peiffert, C., Gerardin, M., Deloule, E., and Mercadier, J.: Characterisation of Reference Materials for In Situ Rb-Sr Dating by LA-ICP-MS/MS, Geostandard Geoanalytic Res., 46, 645–671, https://doi.org/10.1111/ggr.12456, 2022.
Jenkin, G. R. T., Ellam, R. M., Rogers, G., and Stuart, F. M.: An investigation of closure temperature of the biotite Rb–Sr system: The importance of cation exchange, Geochim. Cosmochim. Ac., 65, 1141–1160, https://doi.org/10.1016/S0016-7037(00)00560-3, 2001.
Juhász, A., Tóth, T. M., Ramseyer, K., and Matter, A.: Connected fluid evolution in fractured crystalline basement and overlying sediments, Pannonian Basin, SE Hungary, Chem. Geol., 182, 91–120, https://doi.org/10.1016/S0009-2541(01)00269-8, 2002.
Kaczowka, A. J., Kyser, T. K., Kotzer, T. G., Leybourne, M. I., and Layton-Matthews, D.: Geometallurgical ore characterization of the high-grade polymetallic unconformity-related uranium deposit, Can. Mineral., 59, 813–845, https://doi.org/10.3749/canmin.2000050, 2021.
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, https://doi.org/10.1111/j.1525-1314.1994.tb00050.x, 1994.
Karlstrom, K. E. and Bowring, S. A.: Early Proterozoic Assembly of Tectonostratigraphic Terranes in Southwestern North America, J. Geol., 96, 561–576, 1988.
Kister, P.: Mobilité des éléments géochimiques dans un bassin sédimentaire clastique, du Protérozoïque à nos jours: le bassin Athabasca (Saskatchewan, Canada), PhD thesis, Institut National Polytechnique de Lorraine, https://theses.fr/2003INPL062N (last access: 3 July 2026), 2003.
Kister, P., Vieillard, P., Cuney, M., Quirt, D., and Laverret, E.: Thermodynamic constraints on the mineralogical and fluid composition evolution in a clastic sedimentary basin: the Athabasca Basin (Saskatchewan, Canada), Eur. J. Mineral., 17, 325–341, https://doi.org/10.1127/0935-1221/2005/0017-0325, 2005.
Kohn, M.: Titanite Petrochronology, Reviews in Mineralogy and Geochemistry, 83, 419–441, https://doi.org/10.2138/rmg.2017.83.13, 2017
Kotzer, T. G. and Kyser, T. K.: Fluid history of the Athabasca Basin and its relation to uranium deposits. Saskatchewan Energy and Mines, Saskatchewan Geological Survey Miscellaneous Report, 90, 153–157, 1990.
Kotzer, T. G. and Kyser, T. K.: Petrogenesis of the Proterozoic Athabasca Basin, northern Saskatchewan, Canada, and its relation to diagenesis, hydrothermal uranium mineralization and paleohydrogeology, Chem. Geol., 120, 45–89, https://doi.org/10.1016/0009-2541(94)00114-N, 1995.
Kyser, K., Hiatt, E., Renac, C., Durocher, K., Holk, G., and Deckart, K.: Diagenetic fluids in Paleo-and Meso-Proterozoic sedimentary basins and their implications for long protracted fluid histories, Mineralogical Association of Canada Short Course, 28, 225–262, 2000.
Kyser, K., Lahusen, L., Drever, G., Dunn, C., Leduc, E., and Chipley, D.: Using Pb isotopes in surface media to distinguish anthropogenic sources from undercover uranium sources, CR. Géosci., 347, 215–226, 2015.
Liebmann, J., Kirkland, C. L., Kelsey, D. E., Korhonen, F. J., and Rankenburg, K.: Lithological fabric as a proxy for Rb–Sr isotopic complexity, Chem. Geol., 608, 121041, https://doi.org/10.1016/j.chemgeo.2022.121041, 2022.
Liu, W., Zhang, X., Zhang, J., and Jiang, M.: Sphalerite Rb–Sr Dating and in situ Sulfur Isotope Analysis of the Daliangzi Lead-Zinc Deposit in Sichuan Province, SW China, J. Earth Sci., 29, 573–586, https://doi.org/10.1007/s12583-018-0785-5, 2018.
Macdonald, C. C.: Mineralogy and geochemistry of a Precambrian regolith in the Athabasca Basin, M.Sc. thesis, University of Saskatchewan, Saskatoon, 151 pp., https://harvest.usask.ca/items/624e4ca2-79ed-4992-96a1-43b560a60e4d (last access: 6 July 2026), 1980.
Mao, G., Hua, R., Long, G., and Lu, H.: Rb-Sr Dating of Pyrite and Quartz Fluid Inclusions and Origin of Ore-forming Materials of the Jinshan Gold Deposit, Northeast Jiangxi Province, South China, Ac. Geol. Sin.-Engl., 87, 1658–1667, https://doi.org/10.1111/1755-6724.12166, 2013.
McLachlan, G. and Peel, D.: Finite Mixture Models, 1st edn., Wiley, https://doi.org/10.1002/0471721182, 2000.
Martz, P.: Caractéristiques, chronologie et rôles des circulations fluides dans le bassin d'Athabasca et son socle: implications dans la formation et l'évolution du gisement d'uranium de Cigar Lake, Thèse de doctorat, Université de Lorraine, https://theses.hal.science/tel-01816179v2/file/DDOC_T_2017_0221_MARTZ.pdf (last access: 6 July 2026), 2017.
Martz, P., Mercadier, J., Cathelineau, M., Boiron, M.-C., Quirt, D., Doney, A., Gerbeaud, O., De Wally, E., and Ledru, P.: Formation of U-rich mineralizing fluids through basinal brine migration within basement-hosted shear zones: A large-scale study of the fluid chemistry around the unconformity-related Cigar Lake U deposit (Saskatchewan, Canada), Chem. Geol., 508, 116–143, https://doi.org/10.1016/j.chemgeo.2018.05.042, 2019a.
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, USA, Chem. Geol.: Isotope Geoscience section, 86, 29–47, https://doi.org/10.1016/0168-9622(90)90004-V, 1990.
Melnykov, V. and Melnykov, I.: Initializing the EM algorithm in Gaussian mixture models with an unknown number of components, Comput. Stat. Data An., 56, 1381–1395, https://doi.org/10.1016/j.csda.2011.11.002, 2012.
McFarlane, C. R. M. and Harrison, T. M.: Pb-diffusion in monazite: Constraints from a high-T contact aureole setting, Earth Planet. Sc. Lett., 250, 376–384, https://doi.org/10.1016/j.epsl.2006.06.050, 2006.
McGill, B. D., Marlat, J. L., Matthews, R. B., Sopuck, V. J., Homeniuk, L. A., and Hubregtse, J. J.: The P2 North uranium deposit, Saskatchewan, Canada, Explor. Min. Geol., 2, 321–331, 1993.
McLachlan, G. J., Lee, S. X., and Rathnayake, S. I.: Finite Mixture Models, Annu. Rev. Stat. Appl., 6, 355–378, https://doi.org/10.1146/annurev-statistics-031017-100325, 2019.
Menier, A., Roy, R., Harrison, G., Zerff, R. W., and Kinar, D.: Relationship between rock physical properties and spectral mineralogy applied to exploration for an unconformity-related uranium deposit (Saskatchewan, Canada), Can. J. Earth Sci., 57, 1349–1364, https://doi.org/10.1139/cjes-2019-0080, 2020.
Mercadier, J., Cuney, M., Cathelineau, M., and Lacorde, M.: U redox fronts and kaolinisation in basement-hosted unconformity-related U ores of the Athabasca Basin (Canada): late U remobilisation by meteoric fluids, Miner. Deposita, 46, 105–135, https://doi.org/10.1007/s00126-010-0314-7, 2011.
Mercadier, J., Richard, A., and Cathelineau, M.: Boron- and magnesium-rich marine brines at the origin of giant unconformity-related uranium deposits: δ11B evidence from Mg-tourmalines, Geology, 40, 231–234, https://doi.org/10.1130/G32509.1, 2012.
Młynarska, M., Barnes, C. J., Zack, T., Majka, J., and Mazur, S.: In situ white mica Rb
Muñoz-Montecinos, J., Giuliani, A., Oesch, S., Volante, S., Peters, B., and Behr, W.: In situ rubidium–strontium geochronology of white mica in young metamafic and metasomatic rocks from Syros: testing the limits of laser-ablation triple-quadrupole inductively coupled plasma mass spectrometer mica dating using different anchoring approaches, Geochronology, 6, 585–605, https://doi.org/10.5194/gchron-6-585-2024, 2024.
Ng, R., Alexandre, P., Kyser, K., Cloutier, J., Abdu, Y. A., and Hawthorne, F. C.: Oxidation state of iron in alteration minerals associated with sandstone-hosted unconformity-related uranium deposits and apparently barren alteration systems in the Athabasca Basin, Canada: Implications for exploration, J. Geochem. Explor., 130, 22–43, https://doi.org/10.1016/j.gexplo.2013.02.009, 2013.
Nguyen, H. and McLachlan, G.: Maximum likelihood estimation of Gaussian mixture models without matrix operations, Adv. Data Anal. Classi., 9, https://doi.org/10.1007/s11634-015-0209-7, 2015.
Obin, T.: Mobilités du carbone et du soufre dans l'environnement du Bassin de l'Athabasca (Saskatchewan, Canada) et impact(s) sur la formation des gisements d'uranium de type discordance, Thèse de doctorat, Université de Lorraine, https://theses.fr/2025LORR0092 (last access: 6 July 2026), 2025.
Olierook, H. K. H., Rankenburg, K., Ulrich, S., Kirkland, C. L., Evans, N. J., Brown, S., McInnes, B. I. A., Prent, A., Gillespie, J., McDonald, B., and Darragh, M.: Resolving multiple geological events using in situ Rb–Sr geochronology: implications for metallogenesis at Tropicana, Western Australia, Geochronology, 2, 283–303, https://doi.org/10.5194/gchron-2-283-2020, 2020.
Oummouch, A., Essaifi, A., Zayane, R., Maddi, O., Zouhair, M., and Maacha, L.: Geology and Metallogenesis of the Sediment-Hosted Cu-Ag Deposit of Tizert (Igherm Inlier, Anti-Atlas Copperbelt, Morocco), Geofluids, 2017, 7508484, https://doi.org/10.1155/2017/7508484, 2017.
Pacquet, A. and Weber, F.: Pétrographie et minéralogie des halos d'altération autour du gisement de Cigar Lake et leurs relations avec les minéralisations, Can. J. Earth Sci., 30, 674–688, https://doi.org/10.1139/e93-055, 1993.
Pagel, M.: Cadre géologique des gisements d'uranium dans la structure de Carswell (Saskatchewan, Canada). Etudes des phases fluides, Thèse de 3ème cycle, Université de Nancy, Nancy, France, 1975a.
Pagel, M.: Détermination des conditions physico-chimiques de la silicification diagénétique des grès Athabasca (Canada) au moyen des inclusions fluides, Comptes Rendus Académie Sci. Paris, Série D, 280, 2301–2304, 1975b.
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, https://doi.org/10.1039/C1JA10172B, 2011.
Pehrsson, S., Eglington, B., Rainbird, R., Regis, D., Ramaekers, P., and Jefferson, C.: Extent and significance of the Racklan-Forward Orogen in Canada: far-field interior reactivation during Nuna assembly, Geological Society, London, Special Publications, 531, 47–75, https://doi.org/10.1144/SP531-2022-307, 2023.
Percival, J. B. and Kodama, H.: Sudoite from cigar lake, Saskatchewan, Can. Mineral., 27, 633–641, 1989.
Philippe, S., Lancelot, J. R., Clauer, N., and Pacquet, A.: Formation and evolution of the Cigar Lake uranium deposit based on U–Pb and K–Ar isotope systematics, Can. J. Earth Sci., 30, 720–730, https://doi.org/10.1139/e93-058, 1993.
Powell, J. W., Percival, J. B., Potter, E. G., Van Der Lelij, R., and Xie, R.: Mineralogy and K–Ar geochronology of clay alteration associated with uranium mineralization in the Patterson Lake Corridor, Saskatchewan, Geochem.: Explor. Environ. Anal., 22, geochem2021-061, https://doi.org/10.1144/geochem2021-061, 2022.
Qiu, E., Larson, K. P., Camacho, A., and Zhang, Y.: Reassessing the timing of high-strain deformation in the Strangways Metamorphic Complex, Central Australia, by in situ mica Rb–Sr and titanite U–Pb geochronology, J. Geol. Soc., 181, jgs2023-163, https://doi.org/10.1144/jgs2023-163, 2024.
Rabiei, M., Chi, G., Normand, C., Davis, W. J., Fayek, M., and Blamey, N. J. F.: Hydrothermal Rare Earth Element (Xenotime) Mineralization at Maw Zone, Athabasca Basin, Canada, and Its Relationship to Unconformity-Related Uranium Deposits, Econ. Geol., 112, 1483–1507, https://doi.org/10.5382/econgeo.2017.4518, 2017.
Rainbird, R. H., Stern, R. A., Rayner, N., Jefferson, C. W., and Delaney, G.: Age, provenance, and regional correlation of the Athabasca Group, Saskatchewan and Alberta, constrained by igneous and detrital zircon geochronology, Bulletin-Geological Survey of Canada, 588, 193, https://www.researchgate.net/publication/292432047_Age_provenance_and_regional_correlation_of_the_Athabasca_Group_Saskatchewan_and_Alberta_constrained_by_igneous_and_detrital_zircon_geochronology_EXTECH_IV_Geology_and_Uranium_EXploration_TECHnology_of (last access: 3 July 2026), 2007.
Ramaekers, P., Jefferson, C. W., Yeo, G. M., Collier, B., Long, D. G. F., Drever, G., McHardy, S., Jiricka, D., Cutts, C., and Wheatley, K.: Revised geological map and stratigraphy of the Athabasca Group, Saskatchewan and Alberta, Bulletin-Geological Survey of Canada, 588, 155, https://www.researchgate.net/publication/279571432_Revised_geological_map_and_stratigraphy_of_the_Athabasca_group_Saskatchewan_and_Alberta (last access: 3 July 2026), 2007.
Rasmussen, B., Fletcher, I. R., and McNaughton, N. J.: Dating low-grade metamorphic events by SHRIMP U–Pb analysis of monazite in shales, Geology, https://doi.org/10.1130/0091-7613(2001)029<0963:DLGMEB>2.0.CO;2, 29, 963, 2001.
Rasmussen, B., Sheppard, S., and Fletcher, I. R.: Testing ore deposit models using in situ U–Pb geochronology of hydrothermal monazite: Paleoproterozoic gold mineralization in northern Australia, Geology, 34, 77–80, https://doi.org/10.1130/G22058.1, 2006.
Rasmussen, B., Zi, J.-W., and Muhling, J. R.: Tectonic fluid expulsion: U–Pb evidence for punctuated hydrothermal fluid flow and hydraulic fracturing during orogenesis, Earth Planet. Sc. Lett., 604, 117997, https://doi.org/10.1016/j.epsl.2023.117997, 2023.
Redaa, A., Farkaš, J., Gilbert, S., Collins, A. S., Wade, B., Löhr, S., Zack, T., and Garbe-Schönberg, D.: Assessment of elemental fractionation and matrix effects during in situ Rb–Sr dating of phlogopite by LA-ICP-MS/MS: implications for the accuracy and precision of mineral ages, J. Anal. Atom. Spectrom., 36, 322–344, https://doi.org/10.1039/D0JA00299B, 2021.
Redaa, A., Farkaš, J., Hassan, A., Collins, A. S., Gilbert, S., and Löhr, S. C.: Constraints from in-situ Rb–Sr dating on the timing of tectono-thermal events in the Umm Farwah shear zone and associated Cu-Au mineralisation in the Southern Arabian Shield, Saudi Arabia, J. Asian Earth Sci., 224, 105037, https://doi.org/10.1016/j.jseaes.2021.105037, 2022.
Reynolds, R. C. and Thomson, C. H.: Illite from the Potsdam Sandstone of New York: A Probable Noncentrosymmetric Mica Structure, Clay. Clay Miner., 41, 66–72, https://doi.org/10.1346/CCMN.1993.0410107, 1993.
Ribeiro, B. V., Kirkland, C. L., Finch, M. A., Faleiros, F. M., Reddy, S. M., Rickard, W. D. A., and Hartnady, M. I. H.: Microstructures, geochemistry, and geochronology of mica fish: Review and advances, J. Struct. Geol., 175, 104947, https://doi.org/10.1016/j.jsg.2023.104947, 2023a.
Ribeiro, B. V., Kirkland, C. L., Kelsey, D. E., Reddy, S. M., Hartnady, M. I. H., Faleiros, F. M., Rankenburg, K., Liebmann, J., Korhonen, F. J., and Clark, C.: Time-strain evolution of shear zones from petrographically constrained Rb–Sr muscovite analysis, Earth Planet. Sc. Lett., 602, 117969, https://doi.org/10.1016/j.epsl.2022.117969, 2023b.
Richard, A., Banks, D. A., Mercadier, J., Boiron, M.-C., Cuney, M., and Cathelineau, M.: An evaporated seawater origin for the ore-forming brines in unconformity-related uranium deposits (Athabasca Basin, Canada): Cl/Br and δ37Cl analysis of fluid inclusions, Geochim. Cosmochim. Ac., 75, 2792–2810, https://doi.org/10.1016/j.gca.2011.02.026, 2011.
Richard, A., Cauzid, J., Cathelineau, M., Boiron, M.-C., Mercadier, J., and Cuney, M.: Synchrotron XRF and XANES investigation of uranium speciation and element distribution in fluid inclusions from unconformity-related uranium deposits, Geofluids, 13, 101–111, https://doi.org/10.1111/gfl.12009, 2013.
Richard, A., Montel, J.-M., Leborgne, R., Peiffert, C., Cuney, M., and Cathelineau, M.: Monazite Alteration in H2O ± HCl ± NaCl ± CaCl2 Fluids at 150 °C and psat: Implications for Uranium Deposits, Minerals, 5, 693–706, https://doi.org/10.3390/min5040518, 2015.
Rösel, D. and Zack, T.: LA-ICP-MS/MS Single-Spot Rb-Sr Dating, Geostandard Geoanalytic Res., 46, 143–168, https://doi.org/10.1111/ggr.12414, 2022.
Saito, T., Qiu, H.-N., Shibuya, T., Li, Y.-B., Kitajima, K., Yamamoto, S., Ueda, H., Komiya, T., and Maruyama, S.: Ar–Ar dating for hydrothermal quartz from the 2.4 Ga Ongeluk Formation, South Africa: implications for seafloor hydrothermal circulation, R Soc Open Sci, 5, 180260, https://doi.org/10.1098/rsos.180260, 2018.
Schneider, D. A., Heizler, M. T., Bickford, M. E., Wortman, G. L., Condie, K. C., and Perilli, S.: Timing constraints of orogeny to cratonization: Thermochronology of the Paleoproterozoic Trans-Hudson orogen, Manitoba and Saskatchewan, Canada, Precambrian Res., 153, 65–95, https://doi.org/10.1016/j.precamres.2006.11.007, 2007.
Scott Anderson, F., Levine, J., and Whitaker, T. J.: Rb–Sr resonance ionization geochronology of the Duluth Gabbro: A proof of concept for in situ dating on the Moon, Rapid Commun. Mass Sp., 29, 1457–1464, https://doi.org/10.1002/rcm.7253, 2015.
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.
Schmitz, B., Biermanns, P., Hueck, M., Wemmer, K., Schmid, S. M., Onuzi, K., Reicherter, K., and Ustaszewski, K.: Kinematics and Age of the Orogen-Perpendicular Shkoder-Peja Normal Fault in North Albania Constrained by Fault-Slip Data, Raman Spectroscopy and K–Ar Fault-Gouge Dating, Tectonics, American Geophysical Union, 44, e2024TC008660, https://doi.org/10.1029/2024TC008660, 2025.
Sibson, R. H.: Conditions for fault-valve behaviour, Geological Society, London, Special Publications, 54, 15–28, https://doi.org/10.1144/GSL.SP.1990.054.01.02, 1990.
Sims, P. K. and Peterman, Z. E.: Early Proterozoic Central Plains orogen: A major buried structure in the north-central United States, Geology, 14, 488–491, 1986.
Skipton, D. R., St-Onge, M. R., Schneider, D. A., and McFarlane, C. R. M.: Tectonothermal Evolution of the Middle Crust in the Trans-Hudson Orogen, Baffin Island, Canada: Evidence from Petrology and Monazite Geochronology of Sillimanite-bearing Migmatites, J. Petrol., 57, 1437–1462, https://doi.org/10.1093/petrology/egw046, 2016.
Skirrow, R. G., Mercadier, J., Armstrong, R., Kuske, T., and Deloule, E.: The Ranger uranium deposit, northern Australia: Timing constraints, regional and ore-related alteration, and genetic implications for unconformity-related mineralisation, Ore Geol. Rev., 76, 463–503, https://doi.org/10.1016/j.oregeorev.2015.09.001, 2016.
Sundvoll, B. and Larsen, B. T.: Rb–Sr isotope systematics in the magmatic rocks of the Oslo Rift, Norges Geologiske Undersøkelse, Bulletin 418, 27–46, https://www.semanticscholar.org/paper/Rb-Sr-isotope-systematics (last access: 3 July 2026), 1990.
Tian, J., Wang, J., Tian, T., Wang, L., Wang, Y., Yu, X., Zhang, W., Ren, T., and Sun, B.: In-Situ Geochemical and Rb–Sr Dating Analysis of Sulfides from a Gold Deposit Offshore of Northern Sanshandao, Jiaodong Peninsula, North China: Implications for Gold Mineralization, Minerals, 14, 456, https://doi.org/10.3390/min14050456, 2024.
Tichomirowa, M., Käßner, A., Sperner, B., Lapp, M., Leonhardt, D., Linnemann, U., Münker, C., Ovtcharova, M., Pfänder, J. A., Schaltegger, U., Sergeev, S., von Quadt, A., and Whitehouse, M.: Dating multiply overprinted granites: The effect of protracted magmatism and fluid flow on dating systems (zircon U–Pb: SHRIMP/SIMS, LA-ICP-MS, CA-ID-TIMS; and Rb–Sr, Ar–Ar) – Granites from the Western Erzgebirge (Bohemian Massif, Germany), Chem. Geol., 519, 11–38, https://doi.org/10.1016/j.chemgeo.2019.04.024, 2019.
Tran, H., Ansdell, K., Bethune, K., Ashton, K., and Hamilton, M.: Provenance and tectonic setting of Paleoproterozoic metasedimentary rocks along the eastern margin of Hearne craton: Constraints from SHRIMP geochronology, Wollaston Group, Saskatchewan, Canada, Precambrian Res., 167, 171–185, https://doi.org/10.1016/j.precamres.2008.08.003, 2008.
Toma, J., Creaser, R. A., Card, C., Stern, R. A., Chacko, T., and Steele-MacInnis, M.: Re-Os systematics and chronology of graphite, Geochim. Cosmochim. Ac., 323, 164–182, https://doi.org/10.1016/j.gca.2022.02.012, 2022.
Toma, J., Creaser, R. A., Card, C., Pana, D., Dufrane, A., and Li, L.: Nuna supercontinent assembly linked to carbon cycling in shear zones 1.9–1.7 billion years ago, Nat. Geosci., 17, 1038–1045, https://doi.org/10.1038/s41561-024-01519-w, 2024.
Velde, B. and Christophe, R.: Smectite to illite conversion and K–AR ages, Clay Miner., 31, 25–32, 1996.
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.
Villa, I. M.: Isotopic closure, Terra Nova, 10, 42–47, https://doi.org/10.1046/j.1365-3121.1998.00156.x, 1998.
Villa, I. M.: Dating deformation: the role of atomic-scale processes, J. Geol. Soc., 179, jgs2021-098, https://doi.org/10.1144/jgs2021-098, 2022.
Viswanathan, H. S., Ajo-Franklin, J., Birkholzer, J. T., Carey, J. W., Guglielmi, Y., Hyman, J. D., Karra, S., Pyrak-Nolte, L. J., Rajaram, H., Srinivasan, G., and Tartakovsky, D. M.: From Fluid Flow to Coupled Processes in Fractured Rock: Recent Advances and New Frontiers, Rev. Geophys., 60, e2021RG000744, https://doi.org/10.1029/2021RG000744, 2022.
Walawender, M. J., Gastil, R. G., Clinkenbeard, J. P., McCormick, W. V., Eastman, B. G., Wernicke, R. S., Wardlaw, M. S., Gunn, S. H., and Smith, B. M.: Chapter 1: Origin and evolution of the zoned La Posta-type plutons, eastern Peninsular Ranges batholith, southern and Baja California, in: Geological Society of America Memoirs, vol. 174, Geological Society of America, 1–18, https://doi.org/10.1130/MEM174-p1, 1990.
Walter, B., Géraud, Y., Bartier, D., Kluska, J.-M., Diraison, M., Morlot, C., and Raisson, F.: Petrophysical and mineralogical evolution of weathered crystalline basement in western Uganda: Implications for fluid transfer and storage, AAPG Bulletin, 102, 1035–1065, https://doi.org/10.1306/0810171610917171, 2018.
Wang, C., Alard, O., Lai, Y.-J., Foley, S. F., Liu, Y., Munnikhuis, J., and Wang, Y.: Advances in in-situ Rb–Sr dating using LA-ICP-MS/MS: applications to igneous rocks of all ages and to the identification of unrecognized metamorphic events, Chem. Geol., 610, 121073, https://doi.org/10.1016/j.chemgeo.2022.121073, 2022.
Weinberg, R. F., Wolfram, L. C., Nebel, O., Hasalová, P., Závada, P., Kylander-Clark, A. R. C., and Becchio, R.: Decoupled U–Pb date and chemical zonation of monazite in migmatites: The case for disturbance of isotope systematics by coupled dissolution-reprecipitation, Geochim. Cosmochim. Ac., 269, 398–412, https://doi.org/10.1016/j.gca.2019.10.024, 2020.
Willigers, B. J. A., Mezger, K., and Baker, J. A.: Development of high precision Rb–Sr phlogopite and biotite geochronology; an alternative to 40Ar
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, https://doi.org/10.1111/j.1751-908X.2001.tb00601.x, 2001.
Worden, J. M., Cumming, G. L., and Baadsgaard, H.: Geochronology of host rocks and mineralization of the Midwest uranium deposit, northern Saskatchewan, edited by: Sibbald, T. I. and Petruk, W., Geology of Uranium Deposits, CIM An. Conf., 32, 67–72, 1985.
Yardley, B. W. D.: Quartz veins and devolatilization during metamorphism, J. Geol. Soc., 140, 657-663, https://doi.org/10.1144/gsjgs.140.4.0657, 1983.
Yardley, B. W. D. and Bodnar, R. J.: Fluids in the Continental Crust, GeochemPersp, 3, 1–127, https://doi.org/10.7185/geochempersp.3.1, 2014.
Yeo, G. M. and Delaney, G.: The Wollaston Supergroup, stratigraphy and metallogeny of a Paleoproterozoic Wilson cycle in the Trans-Hudson Orogen, Saskatchewan, Geological Survey of Canada, Bulletin 588, 89–117, https://doi.org/10.4095/223746, 2007.
Zack, T. and Hogmalm, K. J.: Laser ablation Rb
Zametzer, A., Kirkland, C. L., Barham, M., Hartnady, M. I. H., Bath, A. B., and Rankenburg, K.: Episodic alteration within a gold-bearing Archean shear zone revealed by in situ biotite Rb–Sr dating, Precambrian Res., 382, 106872, https://doi.org/10.1016/j.precamres.2022.106872, 2022.
Short summary
This study investigates Rb–Sr system behavior in hydrothermally altered muscovite using in-situ LA-ICP-MS/MS (Laser Ablation-Inductively Coupled Plasma-Tandem Mass Spectrometry) analyses from the Athabasca Basin. Unaltered muscovite records Paleoproterozoic crystallization ages, whereas muscovite altered to illite and sudoite yields a consistent age of ~1640 Ma, corresponding to alteration halos related to unconformity-type uranium deposits. These results highlight the potential of Rb–Sr dating to constrain hydrothermal processes and fluid–rock interactions.
This study investigates Rb–Sr system behavior in hydrothermally altered muscovite using in-situ...
