Publication Date:
2020-12-21
Description:
BREVIA
Description:
We report on the discovery in southern Egypt of an impact crater 45 m in diameter with a pristine rayed structure. Such pristine structures have been previously observed only on atmosphereless rocky or icy planetary bodies in the Solar System. This feature and the association with an iron meteorite impactor and shock metamorphism provides a unique picture of small-scale hypervelocity impacts on the Earth's crust. Contrary to current geophysical models, ground data indicate that iron meteorites with masses of the order of tens of tons can penetrate the atmosphere without significant fragmentation.
Description:
Published
Description:
804
Description:
1.8. Osservazioni di geofisica ambientale
Description:
3.8. Geofisica per l'ambiente
Description:
JCR Journal
Description:
open
Keywords:
Impact crater
;
Egypt
;
geophysical exploration
;
ataxite
;
04. Solid Earth::04.04. Geology::04.04.03. Geomorphology
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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