Structural Evolution and Sedimentary Characteristics of Cenozoic in Qaidam Basin

Abstract

Abstract: The Paleogene in Qaidam basin is in stage of weak-spreading depression, dominated by fluvial-lacustrine deposit. In Ganchaigou formation of the Neogene the active mantle source rock-magma resulted in widely depressed process, occurring the largest lacustrine overflow and deposit. The multi-tectonic movements since Pliocene in this basin took place, causing the structural deformations in geometry and kinematics. It is concluded that the deposition in Qaidam basin is controlled and reconstructed by strike-slip thrust structures, thus developing such multiple sedimentary systems as fluvial, lacustrine, alluvial, pluvial and aeolian deposits.

Key words: Qaidam basin, Cenozoic, structural evolution, sedimentary characteristic

CLC Number:

TE111

WANG Bu-qing. Structural Evolution and Sedimentary Characteristics of Cenozoic in Qaidam Basin[J]. Xinjiang Petroleum Geology, 2006, 27(6): 670-672.

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