南图尔盖盆地Doshan地区底辟构造的发现及勘探意义

doi:10.11743/ogg20130415

Abstract

Abstract: The diapir structure newly defined in Doshan area,South Turgai Basin is a typical duplex structure.The lower carbonate diapir superimposes on the deeper one,and maintains the consistency of structural configuration with that of the latter at the same time.These small-scale diapir structures are generally on NW-SE trend.They are recognized as deep-source diapirs based on their regional stress background,plastic deformation,and pyrolysis gas show.Their development is mainly controlled by the upswelling of deep materials along small-scale faults due to the revitalization of deep base paleo-faults during the Late Cretaceous large-scale strike-slipping and uplifting deformation in southern Turgai Basin.The discovery of this kind of structures not only provides a new mode of tectonic research,but also a new domain of petroleum exploration in southern Turgai Basin.Diapir structures located in slope-burial hill belt have favorable accumulation conditions,and are favorable targets for discovering structural and/or lithologic hydrocarbon reservoirs.

Key words: hydrocarbon migration and accumulation, diapir structure, burial hill-slope belt, Doshan area, South Turgai Basin

CLC Number:

TE121.2

Dai Hansong, Hong Liang, Zhang Mingjun, Zhang Jing, Zhang Yajun, Wang Xin. Discovery of diapir structure and its significances for exploration in Doshan area, South Turgai Basin[J]. Oil & Gas Geology, 2013, 34(4): 528-532.

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Discovery of diapir structure and its significances for exploration in Doshan area, South Turgai Basin

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