Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5783400 | Geochimica et Cosmochimica Acta | 2017 | 37 Pages |
Abstract
Collectively, this study provides evidence for extraterrestrial admixtures ranging between â¼40 and up to 100% to three of the four analyzed BARB5 spherule layers, and a scenario for their genesis involving (i) impact of a chondritic bolide into a sedimentary target, (ii) varying admixtures of meteoritic components to target materials, (iii) spherule formation via condensation in an impact vapor plume, (iv) transportation of the spherules and sedimentation under submarine conditions, followed by (v) moderate post-impact remobilization of transition metals and highly siderophile elements.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Toni Schulz, Christian Koeberl, Ambre Luguet, David van Acken, Tanja Mohr-Westheide, Seda Ozdemir, Wolf Uwe Reimold,