基本信息来源于合作网站,原文需代理用户跳转至来源网站获取       
摘要:
For better studying the relationship between the rifts and deep structure, a detailed P-wave velocity structure under eastern Tibet has been modeled using 4767 arrival times from 169 teleseismic events recorded by 51 portable stations. In horizontal slices through the model, a prominent low-velocity anomaly was detected under the rifts from the surface to a depth of ~250 km; this extends to a depth of ~400 km in the vertical slice. This low-velocity anomaly is interpreted as an upper mantle upwelling. The observations made provide seismic evidence for the formation of north-south trending rifts. East of the low-velocity anomaly, a clear high-velocity anomaly is found between depths of 40 and 200 km. Due to its shallow depth, we suggest that it consists of materials from an ancient continental closure rather than the Indian Plate. From depths of 250 to 400 km, a high-velocity anomaly appears to the south of the Jiali Fault. This anomaly may correspond to the northern edge of the Indian Plate that detached from the surface under the Himalayan block. We suggest that the Indian Plate underthrusts no further than the Jiali Fault in eastern Tibet.
推荐文章
Major Miocene geological events in southern Tibet and eastern Asia induced by the subduction of the
Ridge subduction
Eastern Tibetan Plateau
Cenozoic mineralization
Seismic anomaly
Geochronological and geochemical constraints on the Cuonadong leucogranite, eastern Himalaya
Leucogranite
SIMS zircon U-Pb dating
40Ar/39Ar dating
Geochemistry
North Himalaya
Using seismic surveys to investigate sediment distribution and to estimate burial fluxes of OC, N, a
Dongfeng Reservoir
Seismic survey
Sedimentation
Nutrients burial fluxes
Basic formation mechanisms of Lake Doroninskoye soda water, East Siberia, Russia
Saline lake
Sulfate reduction
Thermodynamic equilibrium
内容分析
关键词云
关键词热度
相关文献总数  
(/次)
(/年)
文献信息
篇名 Seismic P-wave tomography in eastern Tibet: Formation of the rifts
来源期刊 科学通报(英文版) 学科 地球科学
关键词
年,卷(期) 2011,(23) 所属期刊栏目
研究方向 页码范围 2450-2455
页数 6页 分类号 P631.4
字数 语种 中文
DOI
五维指标
传播情况
(/次)
(/年)
引文网络
引文网络
二级参考文献  (0)
共引文献  (0)
参考文献  (0)
节点文献
引证文献  (0)
同被引文献  (0)
二级引证文献  (0)
2011(0)
  • 参考文献(0)
  • 二级参考文献(0)
  • 引证文献(0)
  • 二级引证文献(0)
引文网络交叉学科
相关学者/机构
期刊影响力
科学通报(英文版)
半月刊
1001-6538
11-1785/N
大16开
北京东黄城根北街16号
2-177
1950
eng
出版文献量(篇)
9507
总下载数(次)
1
总被引数(次)
58070
  • 期刊分类
  • 期刊(年)
  • 期刊(期)
  • 期刊推荐
论文1v1指导