Coupled strontium-calcium isotopes in Archean anorthosites reveal a late start for mantle depletion.

Matilda Boyce, Anthony Kemp, Chris Fisher, Dan Bevan, Aleksey Sadekov, Jamie Lewis, Simon Wilde, Tim Ivanic, Tim Elliott

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Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Matilda BoyceSchool of Earth and Oceans, The University of Western Australia, Perth, WA, Australia. matilda.boyce@uwa.edu.au.ORCID https://orcid.org/0000-0003-1480-9532

Anthony KempSchool of Earth and Oceans, The University of Western Australia, Perth, WA, Australia.ORCID http://orcid.org/0000-0003-1642-0360

Chris FisherSchool of Earth and Oceans, The University of Western Australia, Perth, WA, Australia.

Dan BevanSchool of Earth and Oceans, The University of Western Australia, Perth, WA, Australia.ORCID http://orcid.org/0000-0001-6382-8778

Aleksey SadekovCentre for Microscopy, Characterisation and Analysis, The University of Western Australia, Perth, WA, Australia.

Jamie LewisBristol Isotope Group, School of Earth Sciences, University of Bristol, Bristol, UK.

Simon WildeSchool of Earth and Planetary Sciences, Curtin University, Bentley, WA, Australia.ORCID http://orcid.org/0000-0002-4546-8278

Tim IvanicDepartment of Energy, Mines, Industry Regulation and Safety, Geological Survey of Western Australia, East Perth, WA, Australia.

Tim ElliottBristol Isotope Group, School of Earth Sciences, University of Bristol, Bristol, UK.ORCID http://orcid.org/0000-0002-0984-0191

Funding

Australian Nuclear Science and Technology Organisation (ANSTO) 19325Department of Education and Training | Australian Research Council (ARC) DP200103208Department of Education and Training | Australian Research Council (ARC) LE100100203Department of Education and Training | Australian Research Council (ARC) LE150100013

6 · The paper itself

Abstract

Voluminous felsic continental crust is, as far as we know, unique to Earth, yet the timescales of its earliest growth remain debated. Archean mantle evolution is complementary to crustal growth but is largely unconstrained for strontium isotopes due widespread Rb-Sr disturbance. Here, we perform high spatial resolution radiogenic Sr and Ca isotope measurements in magmatic plagioclase megacrysts from 3.7-2.8 Ga Archean anorthosites and leucogabbros. We report mantle-like Ca isotope signatures and the most unradiogenic terrestrial

Identifiers

PMID41173851

DOI10.1038/s41467-025-64641-2

PMCPMC12578967

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