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Structural Style and Hydrocarbon Prospectivity of the Growth Faults Related Structures in the Bengal Basin

Journal of Geoscience and Environment Protection 2024年第8期12卷 197-218页

作者： Md. Fazle Rabbi Joy Md. Mostafizur Rahman S. M. Mainul Kabir Tamanna Binte Arfan Farhad Hsossain Department of Geology University of Dhaka Dhaka Bangladesh

The structural and tectonic evolution of the Bengal Basin is characterized by a complex interplay of factors, including sedimentation, the rise of the Himalayan Mountains, and the movements of Jurassic syn-rift faults. This study aims to comprehend the progression of growth faults inside the basin by examining fault geometry, basin development, and structural relief patterns. We used high-quality 2D seismic lines from the PK-MY-8403, classical seismic interpretation techniques and modeling were carried out to reveal the plate tectonic conditions, stratigraphy, and sedimentation history of the basin. The break-up unconformity, Paleocene and Eocene submerged conditions, and crucial geological formations including the Sylhet Limestone, Barail Group, and Surma Group were among the notable features recognized in seismic section. With an emphasis on growth strata and pre-growth strata, significant variations in layer thickness and relief were remarked in different stratigraphic levels. Basin development events like the evolution of the Miocene remnant ocean basin, sedimentation in Oligocene, Eocene Himalayan collision, and the Pliocene reverse fault development are analyzed. In the early the Pliocene compressional forces outpaced sedimentation rates and syn-depositional normal faults of Oligocene time began to move in opposite direction. Syn-depositional growth faults may have formed in the Bengal Basin as a result of this reversal. This research provides a detailed comprehensive knowledge of growth fault development in the Bengal Basin following the seismic interpretation, modelling, and thickness/relief analysis. The outcomes point to a substantial hydrocarbon potential, especially in regions like the Eocene Hinge Zone, where the prospectivity of the area is enhanced by carbonate reefs and Jalangi shale. However, the existence of petroleum four-way closure in the investigated region requires further investigation.

关键词： plate tectonic Subsidence History Structural Relief Syn-Depositional Model Growth Fault Petroleum System

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Geomorphological effects of plate movement during Quaternary in China' s tropics

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Journal of Geographical Sciences 2004年第2期 124-129页

作者： ZHANG Weiqiang 1 ,HUANG Zhenguo 2 (1. Guangdong Business College, Guangzhou 510320, China 2. Guangzhou Institute of Geography, Guangzhou 510070, China)

The eastern and western fronts of plate movement in Taiwan Island and Tibetan plateau respectively are the two major sources of tectonic force for the morphogensis during Quaternary in China's tropics. Seven examples of geomorphological effects of plate movement are enumerated to discuss the differentiation of tectonic landforms in space and time during Quaternary. The tectonic movement tends to be more active since middle Pleistocene. Some phenomena such as the arc-shape mountain systems, volcanism and crustal deformation imply that the juncture zone of eastern and western tectonic forces is located at about 110 o E.

关键词： plate tectonic geomorphological effect China’s tropics

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Geomorphological effects of plate movement during Quaternary in China' s tropics

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Journal of Geographical Sciences 2004年第2期14卷 251-256页

作者： ZHANGWeiqiang HUANGZhenguo GuangdongBusinessCollege Guangzhou510320China GuangzhouInstituteofGeography Guangzhou510070China

关键词： plate tectonic geomorphological effect China's tropics

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