An embayment in the East Antarctic basement constrains the shape of the Rodinian continental margin
An embayment in the East Antarctic basement constrains the shape of the Rodinian continental margin
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东南极基底的海湾限制了罗迪尼亚大陆边缘的形状
DOI:
10.1038/s43247-022-00375-z
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发表时间:
2022
影响因子:
7.9
通讯作者:
Forsberg, René
中科院分区:
文献类型:
--
作者:
Jordan, Tom A.;Ferraccioli, Fausto;Forsberg, René
East Antarctic provinces lay at the heart of both Rodinian and Gondwanan supercontinents, yet poor exposure and limited geophysical data provide few constraints on the region’s tectonic evolution. The shape of the Mawson Continent, the stable nucleus of East Antarctica, is one of Antarctica’s most important, but contested features, with implications for global plate reconstructions and local tectonic models. Here we show a major marginal embayment 500–700 km wide, cuts into the East Antarctic basement in the South Pole region. This embayment, defined by new aeromagnetic and other geophysical data, truncates the Mawson Continent, which is distinct from basement provinces flanking the Weddell Sea. We favour a late Neoproterozoic rifting model for embayment formation and discuss analogies with other continental margins. The embayment and associated basement provinces help define the East Antarctic nucleus for supercontinental reconstructions, while the inherited marginal geometry likely influenced evolution of the paleo-Pacific margin of Gondwana.
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影响因子:
4.6
作者:
Jordan TA;Martin C;Ferraccioli F;Matsuoka K;Corr H;Forsberg R;Olesen A;Siegert M
通讯作者:
Siegert M
影响因子:
3.7
作者:
["F. Pappa
通讯作者:
["F. Pappa
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
W. A. Thomas
通讯作者:
W. A. Thomas
影响因子:
1.8
作者:
Golynsky, A;Jacobs, J
通讯作者:
Jacobs, J
影响因子:
4.2
作者:
E. Calignano;D. Sokoutis;D. Sokoutis;E. Willingshofer;Jean;F. Gueydan;F. Gueydan;S. Cloetingh
通讯作者:
S. Cloetingh