Publikationsdatum:
2020-12-21
Beschreibung:
BREVIA
Beschreibung:
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.
Beschreibung:
Published
Beschreibung:
804
Beschreibung:
1.8. Osservazioni di geofisica ambientale
Beschreibung:
3.8. Geofisica per l'ambiente
Beschreibung:
JCR Journal
Beschreibung:
open
Schlagwort(e):
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)
Materialart:
article
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