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The Orogeny in the Altaides 1
Author(s) -
Guosheng Qu,
Guoqi He
Publication year - 1993
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.1755-6724.1993.mp6001001.x
Subject(s) - orogeny , geology , crust , extensional definition , paleontology , unconformity , geomorphology , tectonics
Studies of the deformation styles, formation types and isotopic age data indicate that the Altaides has successively experienced 5 stages of orogeny: (1) the Kanas orogeny forming the angular unconformity between the Baihaba Formation (O 3 ) and the Habahe Group (Z‐O 2 ); (2) the Daqiao orogeny (S 3 ‐D 1‐2 ) giving rise to the early Hercynian quasi‐aulacogen extensional continental crust of the area; (3) the Altay orogeny (middle‐ late Hercynian) leading to the oblique intracontinental collision and the formation of large shear arc‐shaped thrust system and representing a strong orogeny stage; (4) the pan‐Altay orogeny (latest Hercynian‐Indosinian) resulting in the uplifting and erosion of the mountains as a whole; (5) the Himalayan movement causing the rejuvenation of fault systems and block uplift of the Altaides since the Cenozoic.