安达曼-尼科巴断层（ANF）在塑造纳康达姆近海的作用：高分辨率反射地震数据的启示

IF 3.7 2区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Marine and Petroleum Geology Pub Date : 2024-11-15 DOI:10.1016/j.marpetgeo.2024.107211

H.K. Srivastav , D. Ghosal , J. Jacob

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引用次数: 0

摘要

该研究利用三条高分辨率二维地震反射剖面，调查了安达曼-尼科巴断层（ANF）及其在纳康达姆岛附近火山支撑盆地演化过程中的作用。通过速度和极性分析确定，迁移图像显示了一个流体区，1 号线至 3 号线的平均 1/Q 值为 0.0165 至 0.0096。迁移剖面图进一步显示，ANF 的分支是流体迁移的通道，并在基底沉积层内积聚。研究最后强调了新近纪时期沉积中心的转移，表明伊洛瓦底江沉积物供应的波动和 ANF 分支的演变。

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The role of the Andaman Nicobar fault (ANF) in shaping Narcondam offshore: Insights from high-resolution reflection seismic data

The study investigates the Andaman Nicobar Fault (ANF) and its role in the evolution of a volcano-supported basin adjacent to Narcondam Island, using three high-resolution 2D seismic reflection profiles. Migrated images show a fluid zone, determined through velocity and polarity analyses, with mean 1/Q values ranging from 0.0165 to 0.0096 for Lines 1 to 3. Additionally, polygonal faults are imaged, with varying thicknesses (0.1–0.4 km) of Miocene age, positioned above the fluid saturated zone. The migrated sections further show the branches of the ANF to be conduits for fluid migration and accumulation within the basinal deposits. The study finally highlights a shift in depocenter during the Neogene period, indicating fluctuations in sediment supply from the Irrawaddy River and the evolution of the ANF branch.

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来源期刊

Marine and Petroleum Geology 地学-地球科学综合

CiteScore

8.80

自引率

14.30%

发文量

475

审稿时长

63 days

期刊介绍： Marine and Petroleum Geology is the pre-eminent international forum for the exchange of multidisciplinary concepts, interpretations and techniques for all concerned with marine and petroleum geology in industry, government and academia. Rapid bimonthly publication allows early communications of papers or short communications to the geoscience community. Marine and Petroleum Geology is essential reading for geologists, geophysicists and explorationists in industry, government and academia working in the following areas: marine geology; basin analysis and evaluation; organic geochemistry; reserve/resource estimation; seismic stratigraphy; thermal models of basic evolution; sedimentary geology; continental margins; geophysical interpretation; structural geology/tectonics; formation evaluation techniques; well logging.