Publication Date:
2003-05-31
Description:
A tomographic image of the upper mantle beneath central Tibet from INDEPTH data has revealed a subvertical high-velocity zone from approximately 100- to approximately 400-kilometers depth, located approximately south of the Bangong-Nujiang Suture. We interpret this zone to be downwelling Indian mantle lithosphere. This additional lithosphere would account for the total amount of shortening in the Himalayas and Tibet. A consequence of this downwelling would be a deficit of asthenosphere, which should be balanced by an upwelling counterflow, and thus could explain the presence of warm mantle beneath north-central Tibet.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tilmann, Frederik -- Ni, James -- INDEPTH III Seismic Team -- New York, N.Y. -- Science. 2003 May 30;300(5624):1424-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, New Mexico State University, Las Cruces, NM 88003, USA. tilmann@esc.cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12775838" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
