期刊
CRETACEOUS RESEARCH
卷 153, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cretres.2023.105705
关键词
Seismicity; K/Pg boundary; Chicxulub; Asteroid impact; Crevasse splay
In this study, evidence is presented to show that the faulting at Madrid East and neighboring localities occurred after the K/Pg boundary.
Faulting at the well-known Madrid East K/Pg boundary locality in the Raton Basin of southeastern Colorado, U.S.A., recently has been interpreted to be the result of remote triggering by the Chicxulub impact in the Yuca = tan Peninsula, Mexico. However, a similar fault at the neighboring, correlative Madrid West locality recently has been attributed to overloading by a rapidly or catastrophically deposited crevasse splay in a sedimentological study. Therefore, this investigation seeks to provide additional insight on this problem. By focusing primarily on the timing of faulting and deposition of the crevasse splay at Madrid East and neighboring localities, this study presents evidence that faulting at Madrid East and neighboring localities post-dated the K/Pg boundary.(c) 2023 Elsevier Ltd. All rights reserved.
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