Deep structure beneath the southwestern flank of the Baikal rift zone and adjacent areas

Hanting Wu, Zhouchuan Huang, Dapeng Zhao

研究成果: Article査読

1 被引用数 (Scopus)

抄録

The origin of the Baikal rift zone is under debate between active and passive rifting hypotheses owning to the enigmatic deep structure beneath the region. Revealing the formation mechanism of the Baikal rift zone may help to elucidate the process of continental rifting. Applying P-wave teleseismic tomography to an improved data set, we discover low-velocity anomalies under the southwestern flank of the Baikal rift zone, which are interpreted as hot mantle upwellings from under the Siberian craton, indicating hot materials transferring from beneath the craton to beneath the rift. Our images also reveal low-velocity anomalies under the Hangai Dome, probably suggesting the process of delamination, another consequent effect connected to the Siberian upwellings. We propose that the mantle upwellings beneath the Baikal rift zone and surrounding areas play a vital role in the formation of deep structures and geological settings in this area.

本文言語English
論文番号106616
ジャーナルPhysics of the Earth and Planetary Interiors
310
DOI
出版ステータスPublished - 2021 1

ASJC Scopus subject areas

  • 天文学と天体物理学
  • 地球物理学
  • 物理学および天文学(その他)
  • 宇宙惑星科学

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