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- W2892400497 startingPage "169" @default.
- W2892400497 abstract "It is generally agreed that the Archean Earth was subject to a higher impact flux then on the present day Earth, however the rate and influence of large impacts on early Earth environments is still poorly understand. Here we present an overview of the evidence from the rock record for early impacts using the best-studied sequences containing impact layers in the Kaapvaal and Pilbara cratons, ranging in age from 3.47 to 2.49 Ga. A summary of correlations of individual spherule deposits is presented from within and between the two cratons using stratigraphy, petrography, zircon geochronology, platinum-group element (PGE) and Cr isotope geochemistry, and shocked mineralogy. We then evaluate the results of several studies that have suggested environmental and tectonic consequences of the impacts as predicted by impact modeling and discuss outstanding questions." @default.
- W2892400497 created "2018-10-05" @default.
- W2892400497 creator A5017155734 @default.
- W2892400497 creator A5049478930 @default.
- W2892400497 creator A5062114510 @default.
- W2892400497 date "2019-01-01" @default.
- W2892400497 modified "2023-09-27" @default.
- W2892400497 title "Archean Asteroid Impacts on Earth" @default.
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- W2892400497 doi "https://doi.org/10.1016/b978-0-444-63901-1.00008-3" @default.
- W2892400497 hasPublicationYear "2019" @default.
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