Rock fluidization during peak-ring formation of large impact structures
Rock fluidization during peak-ring formation of large impact structures
复制标题
大型冲击结构峰环形成过程中的岩石流化
DOI:
10.1038/s41586-018-0607-z
复制
发表时间:
2018
期刊:
影响因子:
64.8
通讯作者:
IODP-ICDP Expedition 364 Science Party
中科院分区:
文献类型:
--
作者:
Riller;Poelchau;Schulte;Collins;Melosh;Grieve;Morgan;Gulick;McCall;N. Kring;IODP-ICDP Expedition 364 Science Party
Large meteorite impact structures on the terrestrial bodies of the Solar System contain pronounced topographic rings, which emerged from uplifted target (crustal) rocks within minutes of impact. To flow rapidly over large distances, these target rocks must have weakened drastically, but they subsequently regained sufficient strength to build and sustain topographic rings. The mechanisms of rock deformation that accomplish such extreme change in mechanical behaviour during cratering are largely unknown and have been debated for decades. Recent drilling of the approximately 200-km-diameter Chicxulub impact structure in Mexico has produced a record of brittle and viscous deformation within its peak-ring rocks. Here we show how catastrophic rock weakening upon impact is followed by an increase in rock strength that culminated in the formation of the peak ring during cratering. The observations point to quasi-continuous rock flow and hence acoustic fluidization as the dominant physical process controlling initial cratering, followed by increasingly localized faulting.
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DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
J. Morgan;M. Warner;G. Collins;H. Melosh;G. Christeson
通讯作者:
G. Christeson
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
J. Morgan;M. Warner;G. Collins;R. Grieve;G. Christeson;S. Gulick;P. Barton
通讯作者:
P. Barton
影响因子:
4.8
作者:
Collins, G. S.
通讯作者:
Collins, G. S.
影响因子:
5.3
作者:
T. Kenkmann
通讯作者:
T. Kenkmann
影响因子:
3.2
作者:
A. Fujiwara;G. Kamimoto;Akimasa Tsukamoto
通讯作者:
Akimasa Tsukamoto