Crustal structure and exhumation of the Dabie Shan ultrahigh-pressure orogen, eastern China, from seismic reflection profiling

Crustal-penetrating seismic reflection data across the ultrahigh-pressure (UHP) Dabie Shan orogen show that the Yangtze craton was subducted beneath the Sino-Korean craton, forming a bivergent orogenic fabric strikingly similar to 'normal' (non-UHP) collision belts. Hence preservation of U...

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Published in:Geology (Boulder) 2003-05, Vol.31 (5), p.435-438
Main Authors: Yuan, Xue-Cheng, Klemperer, Simon L, Teng, Wen-Bang, Liu, Lai-Xiang, Chetwin, Emily
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Klemperer, Simon L
Teng, Wen-Bang
Liu, Lai-Xiang
Chetwin, Emily
description Crustal-penetrating seismic reflection data across the ultrahigh-pressure (UHP) Dabie Shan orogen show that the Yangtze craton was subducted beneath the Sino-Korean craton, forming a bivergent orogenic fabric strikingly similar to 'normal' (non-UHP) collision belts. Hence preservation of UHP minerals (coesite and diamond) may be unrelated to differences between collisional histories, but may be due to opportunities for subsequent intracrustal uplift of material that is routinely returned from mantle depths into the lower crust in most collisional orogens. Only a narrow channel (100 km to < 35-40 km.
doi_str_mv 10.1130/0091-7613(2003)0312.0.CO;2
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title Crustal structure and exhumation of the Dabie Shan ultrahigh-pressure orogen, eastern China, from seismic reflection profiling
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