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The Arcuate Nappe Structure on the Northern Margin of the Wuliang Moutnains in Western Yunnan
Author(s) -
Shujing Li,
Yehua Shan
Publication year - 1996
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.1755-6724.1996.mp9002002.x
Subject(s) - nappe , geology , cretaceous , paleontology , greenschist , facies , geomorphology , structural basin , metamorphic rock , tectonics
The arcuate nappe structure on the north edge of the Wuliang Mountains in western Yunnan Province is a complex nappe structural system with multiple superimposed structures. The autochthonous system is a WNW—trending arcuate fold belt consisting of the Jurassic and Cretaceous and the allochthonous system is mainly composed of Upper Triassic rocks. Generally, the nappe structure moved from south to north, with the hanging wall thrusting in a WNW direction for a distance of over 10 km. The deep nappe structural system was formed at depths of about 5–10 km in an environment not exceeding the greenschist facies. It occurred in the Oligocene (about 40‐20 Ma).