Seismic velocity variations beneath central Mongolia: Evidence for upper mantle plumes?

详细信息    查看全文

• 作者：Fengxue Zhang^a ; ^b ; ^{zhangfengxue336@163.com} ; Qingju Wu^a ; ^b ; Stephen P. Grand^c ; Yonghua Li^a ; ^b ; Mengtan Gao^a ; Sodnomsambuu Demberel^d ; Munkhuu Ulziibat^d ; Usnikh Sukhbaatar^d
• 关键词：volcanism ; hot material upwelling ; Mongolia ; teleseismic tomography
• 刊名：Earth and Planetary Science Letters
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：459
• 期：Complete
• 页码：406-416
• 全文大小：4968 K
• 卷排序：459

文摘

Traveltime tomography reveals two plume-like structures beneath central Mongolia. One plume is deflected by the thick Gobi Desert lithosphere to surrounding regions. The second plume feeds the Khanuy Gol and Middle Gobi volcanoes. The plumes may be upwellings from the edges of subducted slabs in deep upper mantle.