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Tectonic Evolution of an Early Precambrian High‐Pressure Granulite Belt in the North China Craton
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AbstractA large‐scale high‐pressure granulite belt (HPGB), more than 700 km long, is recognized within the metamorphic basement of the North China craton. In the regional tectonic framework, the Hengshan‐Chengde HPGB is located in the central collision belt between the western block and eastern block, and represents the deep crustal structural level. The typical high‐pressure granulite (HPG) outcrops are distributed in the Hengshan and Chengde areas. HPGs commonly occur as mafic xenoliths within ductile shear zones, and underwent multipile deformations. To the south, the Hengshan‐Chengde HPGB is juxtaposed with the Wutai greenstone belt by several strike‐slip shear zones. Preliminary isotopic age dating indicates that HPGs from North China were mainly generated at the end of the Neoarchaean, assocaited with tectonic assembly of the western and eastern blocks.
Title: Tectonic Evolution of an Early Precambrian High‐Pressure Granulite Belt in the North China Craton
Description:
AbstractA large‐scale high‐pressure granulite belt (HPGB), more than 700 km long, is recognized within the metamorphic basement of the North China craton.
In the regional tectonic framework, the Hengshan‐Chengde HPGB is located in the central collision belt between the western block and eastern block, and represents the deep crustal structural level.
The typical high‐pressure granulite (HPG) outcrops are distributed in the Hengshan and Chengde areas.
HPGs commonly occur as mafic xenoliths within ductile shear zones, and underwent multipile deformations.
To the south, the Hengshan‐Chengde HPGB is juxtaposed with the Wutai greenstone belt by several strike‐slip shear zones.
Preliminary isotopic age dating indicates that HPGs from North China were mainly generated at the end of the Neoarchaean, assocaited with tectonic assembly of the western and eastern blocks.
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