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Characteristics of Upper Mantle Activity in the South China Sea Region and the Indochina Mantle Plume
Author(s) -
Nengyou WU,
Weijun ZENG,
Zhenwu LI,
Yizhong CHEN,
Xiwen WEN,
Deli DU,
Guosheng LI
Publication year - 1999
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.1999.tb00856.x
Subject(s) - mantle convection , mantle (geology) , geology , geodynamics , geophysics , mantle plume , lithosphere , hotspot (geology) , plume , mantle wedge , earth's internal heat budget , convection , seismology , tectonics , meteorology , physics
According to computed results of the mantle traction field beneath the lithosphere based on satellite‐modelled gravity anomalies of different degrees, it has been revealed that the three types of mantle convection on different scales existing in the South China Sea region is the key factor controlling the geodynamics. The mantle convection models on large and middle scales have been proved by natural seismic S‐wave tomographic data and interpreted by using the present mantle plume concept. In consideration of other relevant geological and geophysical data, the authors put emphasis on discussing the expression form, origin and age of the Indochina mantle plume and its important effect on the conversion of organic matter and hydrocarbon accumulation in Cenozoic basins.