The DOI matches its Crossref record; 30 of the 31 references it cites were found in a registry or an index.
Isotopic dating of the migration of a low-grade metamorphic front during orogenesis
Abstract
The southern margin of the Pilbara Craton in northwestern Australia underwent regional heating, folding, and thrusting as well as extensive fluid flow during collision in the Paleoproterozoic. However, the precise timing of this event is uncertain. Previous geochronologic studies of Archean basement rocks have yielded a wide range of younger radiometric dates (from ca. 2.4 Ga to ca. 2.0 Ga), interpreted to record multiple hydrothermal alteration events. In situ U-Pb geochronology of authigenic monazite and xenotime in very low grade Archean metasedimentary rocks from across the craton suggests that the Pilbara was affected by at least two cryptic thermotectonic events, the first between ca. 2430 Ma and ca. 2400 Ma, and the second between ca. 2215 Ma and ca. 2145 Ma. The older event is restricted to three localities in the west, and its cause is unknown. The younger event affected most of the craton (> 100,000 km(2)), spanning a 70 m.y. period from ca. 2215 Ma nearest the collisional margin in the south, to ca. 2145 Ma toward the craton interior in the north. The widespread geographic and stratigraphic distribution of ca. 2.2 Ga phosphates suggests that fluid flow was pervasive. This event was probably driven by the northward-advancing Ophthalmian fold-and-thrust belt that developed during protracted collision. The associated low-grade metamorphic front migrated over similar to 350 km at an average rate of similar to 5.0 mm/yr, placing important constraints on the rate and duration of deformation and metamorphism in orogenic settings.
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“and that the Pilbara Craton, including the Ripon Hills region, has experienced multiple episodes of hydrothermal fluid flow, particularly around the time of peak regional metamorphism at ∼2.1 Ga (18,41).”
From Reappraisal of hydrocarbon biomarkers in Archean rocks (2015) · cites this paper as [18]
Citations
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Reassessing the first appearance of eukaryotes and cyanobacteria
Rasmussen, B., Fletcher, I. R., Brocks, J. J., & Kilburn, M. R. (2008) · Nature · doi:10.1038/nature07381 · Cited by 612
Self-citationIron formations: A global record of Neoarchaean to Palaeoproterozoic environmental history
Konhauser, K. O., Planavsky, N. J., Hardisty, D. S., Robbins, L. J., Warchola, T. J., Haugaard, R., Lalonde, S. V., Partin, C. A., Oonk, P. B. H., Tsikos, H., et al. (2017) · Earth-Science Reviews · doi:10.1016/j.earscirev.2017.06.012 · Cited by 537
“2 Ga when oxygenated and heated groundwaters (>200-400C) migrated along sedimentary layers of pre-existing BIF sediment (Rasmussen et al., 2005).”
BackgroundInfluentialAssembling Australia: Proterozoic building of a continent
Cawood, P. A., & Korsch, R. J. (2008) · Precambrian Research · doi:10.1016/j.precamres.2008.08.006 · Cited by 350
Schoene, B. (2013) · Treatise on Geochemistry · doi:10.1016/b978-0-08-095975-7.00310-7 · Cited by 342
Reappraisal of hydrocarbon biomarkers in Archean rocks
French, K. L., Hallmann, C., Hope, J. M., Schoon, P. L., Zumberge, J. A., Hoshino, Y., Peters, C. A., George, S. C., Love, G. D., Brocks, J. J., et al. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1419563112 · Cited by 307
Metadata
- Authors
- Rasmussen, B., Fletcher, I. R., & Sheppard, S.
- Affiliations
- The University of Western Australia (AU)
- Geological Survey of Western Australia (AU)
- Venue
- Geology
- Publisher
- Geological Society of America
- Published
- 2005
- Volume
- 33
- Issue
- 10
- Pages
- 773
- ISSN
- 0091-7613 (ISSN-L)
- OpenAlex
- W2093101208
- Cited by
- 151
- References
- 31
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 8 · 2023: 5 · 2022: 7 · 2021: 14 · 2020: 10 · 2019: 10 · 2018: 9 · 2017: 18 · 2016: 7 · 2015: 6 · 2014: 6 · 2013: 9 · 2012: 4
- FWCI
- 5.06
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Geology (publishedVersion)
- UWA Profiles and Research Repository (UWA) (submittedVersion)
- Funders
- Australian Research Council
- Topics
- Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geological and Geochemical Analysis
- Physical Sciences › Earth and Planetary Sciences › Geology › Geological Studies and Exploration
- Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Geochronology of Asian Mineral Deposits
- Keywords
- Pilbara Craton, low-grade metamorphism, orogeny, xenotime, U-Pb geochronology, hydrothermal alteration, fluid flow, strain rate
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