摘要
<正>50 Ma以来,印度板块与欧亚板块开始发生陆陆碰撞,其东缘缅甸块体向东俯冲,形成了缅甸弧。该区域的地震分布于0-250 km深度,大致反映了俯冲带的形态。近年来许多地震层析成像的结果显示,高速异常的俯冲板片在青藏东南缘下方到达了地幔转换带,腾冲火山的形成与此深俯冲有关(Huang et al.,2006;Lei et al.,2009)。本研究采用接收函数共转换点叠加方法,结合地震层析成像结果,研究地幔转换带形态,为研究缅甸板块的深俯冲提供地震学证据。
引文
Huang J,Zhao D.High‐resolution mantle tomography of China and surrounding regions[J].Journal of Geophysical Research:Solid Earth(1978-2012),2006,111(B9).
Huang Z,Zhao D,Wang L.P‐wave tomography and anisotropy beneath Southeast Asia:Insight into mantle dynamics[J].Journal of Geophysical Research:Solid Earth,2015.
Lei J,Zhao D,Su Y.Insight into the origin of the Tengchong intraplate volcano and seismotectonics in southwest China from local and teleseismic data[J].Journal of Geophysical Research:Solid Earth(1978-2012),2009,114(B5).