The Boltysh impact structure: An early Danian impact event during recovery from the K-Pg mass extinction.
The Boltysh impact structure: An early Danian impact event during recovery from the K-Pg mass extinction.
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Boltysh撞击结构:K-Pg大灭绝恢复期间的早期Danian撞击事件。
DOI:
10.1126/sciadv.abe6530
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发表时间:
2021-06
期刊:
影响因子:
13.6
通讯作者:
Jolley DW
中科院分区:
文献类型:
--
作者:
Pickersgill AE;Mark DF;Lee MR;Kelley SP;Jolley DW
The Boltysh impact structure formed 0.65 Ma after the K-Pg boundary, coincident with the Lower C29n hyperthermal. Both the Chicxulub and Boltysh impact events are associated with the K-Pg boundary. While Chicxulub is firmly linked to the end-Cretaceous mass extinction, the temporal relationship of the ~24-km-diameter Boltysh impact to these events is uncertain, although it is thought to have occurred 2 to 5 ka before the mass extinction. Here, we conduct the first direct geochronological comparison of Boltysh to the K-Pg boundary. Our 40Ar/39Ar age of 65.39 ± 0.14/0.16 Ma shows that the impact occurred ~0.65 Ma after the mass extinction. At that time, the climate was recovering from the effects of the Chicxulub impact and Deccan trap flood volcanism. This age shows that Boltysh has a close temporal association with the Lower C29n hyperthermal recorded by global sediment archives and in the Boltysh crater lake sediments. The temporal coincidence raises the possibility that even a small impact event could disrupt recovery of the Earth system from catastrophic events.
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影响因子:
56.9
作者:
ALVAREZ, LW;ALVAREZ, W;MICHEL, HV
通讯作者:
MICHEL, HV
影响因子:
56.9
作者:
Alroy, John;Aberhan, Martin;Visaggi, Christy C.
通讯作者:
Visaggi, Christy C.
DOI:
10.1016/s0031-0182(01)00395-9
发表时间:
2002-02-28
影响因子:
3
作者:
Adatte, T;Keller, G;Stinnesbeck, W
通讯作者:
Stinnesbeck, W
DOI:
10.1144/gsl.sp.1998.140.01.18
发表时间:
1998-01-01
期刊:
METEORITES : FLUX WITH TIME AND IMPACT EFFECTS
影响因子:
--
作者:
Hallam, A
通讯作者:
Hallam, A
影响因子:
5
作者:
FLECK, RJ;SUTTER, JF;ELLIOT, DH
通讯作者:
ELLIOT, DH