A crustal Pb isotope map of southeastern Australia.

Autor: Liebmann J; Timescales of Mineral Systems Group, School of Earth and Planetary Sciences, Curtin University, Perth, WA, 6102, Australia. janne.liebmann@curtin.edu.au., Ware B; John de Laeter Centre, Curtin University, Perth, WA, 6102, Australia., Mole DR; Geoscience Australia, Canberra, ACT 2601, Australia.; Research School of Earth Sciences, Australian National University, Acton, ACT 2601, Australia.; School of Earth Sciences, University of Western Australia, Crawley, WA, 6009, Australia., Kirkland CL; Timescales of Mineral Systems Group, School of Earth and Planetary Sciences, Curtin University, Perth, WA, 6102, Australia., Fraser G; Geoscience Australia, Canberra, ACT 2601, Australia., Waltenberg K; Geoscience Australia, Canberra, ACT 2601, Australia., Bodorkos S; Geoscience Australia, Canberra, ACT 2601, Australia., Huston DL; Geoscience Australia, Canberra, ACT 2601, Australia., Evans NJ; John de Laeter Centre, Curtin University, Perth, WA, 6102, Australia., McDonald BJ; John de Laeter Centre, Curtin University, Perth, WA, 6102, Australia., Rankenburg K; John de Laeter Centre, Curtin University, Perth, WA, 6102, Australia., Datta P; Timescales of Mineral Systems Group, School of Earth and Planetary Sciences, Curtin University, Perth, WA, 6102, Australia., Tessalina S; John de Laeter Centre, Curtin University, Perth, WA, 6102, Australia.
Jazyk: angličtina
Zdroj: Scientific data [Sci Data] 2024 Nov 12; Vol. 11 (1), pp. 1222. Date of Electronic Publication: 2024 Nov 12.
DOI: 10.1038/s41597-024-03996-5
Abstrakt: Lead isotopes are a powerful geochemical tracer and a popular tool applied across a broad range of scientific fields, e.g., earth sciences, archaeology, and forensic sciences. Here we present a Pb isotope dataset collected from 232 igneous samples, spanning a ca. 2.3 million km 2 area in southeastern Australia, and over 3 billion years of Earth history. This contribution provides a range of isotopic maps showing the spatial variability of Pb isotopes ( 206 Pb/ 204 Pb, 207 Pb/ 204 Pb, and 208 Pb/ 204 Pb), magma source U/Pb and Th/U, and model ages. The samples selected for this study encompass U- and Th-poor media (i.e., K-feldspar), and U- and Th-bearing sampling media (i.e., whole-rock), providing a temporally and spatially resolved image of U and Th distribution in the crust, and their influence on crustal Pb through radiogenic ingrowth. This dataset has the potential to benefit a wide variety of different disciplines and is an important resource for addressing earth science questions ranging from unravelling crustal differentiation and architecture, through tracing magma source U- and Th-enrichment, to mineral deposit genesis.
Competing Interests: Competing interests The authors declare no competing interests.
(© 2024. The Author(s).)
Databáze: MEDLINE
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