Please use this identifier to cite or link to this item:
Title: Small impact cratering processes produce distinctive charcoal assemblages
Authors: Losiak, Anna
Belcher, C. M.
Plado, J.
Jõeleht, A.
Herd, C. D. K.
Kofman, R. S.
Szokaluk, Monika
Szczuciński, Witold
Muszyński, Andrzej
Wild, E. M.
Baker, S. J.
Keywords: impact crater
meteorite impact
charcoal reflectivity
crater identification
asteroid impact
event deposits
Issue Date: Nov-2022
Citation: Geology vol. 50 (11), 2022, pp. 1276-1280.
Abstract: 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.
Sponsorship: Marie Sklodowska-Curie grant ImpChar, agreement no. 749157; the 2016 Barringer Family Fund for Meteorite Impact Research (Arizona, USA); National Science Centre Poland grants 2020/39/D/ST10/02675 and 2013/09/B/ST10/01666.
DOI: 10.1130/G50056.1
Appears in Collections:Artykuły naukowe (WNGiG)

Files in This Item:
File Description SizeFormat 
Losiak et al 2022.pdfpaper1.94 MBAdobe PDFView/Open
G50056_SuppMat.pdfsupplementary material791.96 kBAdobe PDFView/Open
Show full item record

Items in AMUR are protected by copyright, with all rights reserved, unless otherwise indicated.