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Tectonic and Sedimentary Evolution of Permian Southern Qilian Basin

Author: TanFuRong
Tutor: ZhouLiFa
School: Northwestern University
Course: Mineral prospecting and exploration
Keywords: South Qilian basin Permian Tectono - sedimentary evolution
CLC: P542
Type: Master's thesis
Year: 2011
Downloads: 74
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Abstract


South Qilian basin is located in the southern part of the Qilian fold belt , the southwest o Qaidam Basin , northwest with sinistral strike-slip nature of the Altyn fault cut the north Qilian block phase , the South East and the West Qinling connected . Predecessors many studies focused on the Caledonian , Hercynian , Indosinian Civil plate collision the basic mode orogeny , orogenic processes and orogenesis , while on the Hercynian cycle Indosinian cycle the original basin face of its evolution little studied . South Qilian basin the Permian tectonic and sedimentary evolution of this thesis through research , and to restore the original look of the Basin, Permian different periods , and provide the theoretical basis and the basis of information can Permian oil and gas exploration in the South Qilian basin . \stratigraphic division and correlation of the Qilian basin marine Permian based on different periods of recovery South Qilian basin Permian Basin prototype ; rely on multiple profile across the basin , to conduct a study on the structural features of the basin ; using a balanced section technique to restore the structural features of the basin of the different periods . Thus , all-round , multi-angle South Qilian basin Permian evolution . The results show that : the South Qilian basin has experienced in the Permian transgression a Late Permian regression cycle . Le door ditch period , the whole basin shore deposits , is a depression basin ; the grass ditch in the Permian period , the relative sea level rise , forming a north to south Delta darken - siliciclastic littoral - the edge of the carbonate platform depositional system depression basin ; World Hajar period in the late Permian Basin from west to east from the shore - the platform facies pattern is formed ; stacked Shizhong even recognized period , late basin continued atrophy, fluvial - delta facies restricted epicontinental sea basin from east to west .

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CLC: > Astronomy,Earth Sciences > Geology > Structural Geology > Tectonic movement
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