Publikationen

Small impact cratering processes produce distinctive charcoal assemblages

Autor(en)
A. Losiak, C. M. Belcher, J. Plado, A. Jõeleht, C. D. K. Herd, R. S. Kofman, M. Szokaluk, W. Szczucinski, A. Muszynski, E. M. Wild, S. J. Baker
Abstrakt

The frequency of crater-producing asteroid impacts on Earth is not known. Of the predicted Holocene asteroid impact craters of <200 m diameter, only ~30% have been located. Until now there has been no way to distinguish them from “normal” terrestrial structures unless pieces of iron meteorites were found nearby. We show that the reflective properties of charcoal found in the proximal ejecta of small impact craters are distinct from those produced by wildfires. Impact-produced charcoals and wildfire charcoals must derive from different heating regimes. We suggest that charcoal with specific reflective properties may help to recognize the meteoritic origin of small craters.

Organisation(en)
Isotopenphysik
Externe Organisation(en)
Polish Academy of Sciences (PAS), University of Exeter, University of Tartu, University of Alberta, Adam Mickiewicz University
Journal
Geology
Band
50
Seiten
1276-1280
Anzahl der Seiten
5
ISSN
0091-7613
DOI
https://doi.org/10.1130/G50056.1
Publikationsdatum
11-2022
Peer-reviewed
Ja
ÖFOS 2012
103014 Kernphysik, 105102 Allgemeine Geophysik
Schlagwörter
ASJC Scopus Sachgebiete
Geology
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/small-impact-cratering-processes-produce-distinctive-charcoal-assemblages(cde97772-c229-4ba3-a358-566e7351165f).html