Sedimentary basin analysis using airborne gravity data: a case study from the Bohai Bay Basin, China

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• 作者：Wenyong Li ; Yanxu Liu ; Jianxin Zhou ; Xihua Zhou…
• 关键词：Airborne gravity ; Sedimentary basin ; Anomaly separation ; Gravity inversion ; Bohai Bay Basin
• 刊名：International Journal of Earth Sciences
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：105
• 期：8
• 页码：2241-2252
• 全文大小：5,601 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geology
  Geophysics and Geodesy
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1437-3262
• 卷排序：105

文摘

In this paper, we discuss the application of an airborne gravity survey to sedimentary basin analysis. Using high-precision airborne gravity data constrained by drilling and seismic data from the Bohai Bay Basin in eastern China, we interpreted faults, structural elements, sedimentary thickness, structural styles and local structures (belts) in the central area of the Basin by the wavelet transform method. Subsequently, these data were subtracted from the Bouguer gravity to calculate the residual gravity anomalies. On this basis, the faults were interpreted mainly by linear zones of high gravity gradients and contour distortion, while the sedimentary thicknesses were computed by the Euler deconvolution. The structural styles were identified by the combination of gravity anomalies and the local structures interpreted by the first vertical derivative of the residual gravity. The results showed evidence for seven faults, one sag and ten new local structure belts.