Angria Bank, a submerged plateau with coral reefs, is located off the central-west coast of India. Biologically, the bank attracts scientific community for its coral formations. But geologically, origin and tectonic setting of this feature are not established yet due to scarcity of geological and geophysical data. Newly acquired bathymetry and magnetic data along with existing geophysical data have allowed us to determine crustal structure and tectonic evolution of the Angria Bank. The entire geological setup of the bank consists of 34 km long water plateau (average water depth ~ 20 m), and two prominent spurs extending to its western side. The area of water plateau and entire geological setup are 365 km² and 1460 km², respectively. The bank is characterized by two prominent magnetic low with a relative high in the middle. Integrated gravity and magnetic models revealed that flood basalt has carpeted the entire geological structure which later acted as a foundation for coral growth. The crust below the bank is continental in nature and underplated by high-density magmatic material. Moho is almost flat and lies at a depth of ~ 27 km. The results of 3D Euler deconvolution suggest that the study area is characterized by two types of linear trend viz. NE–SW to NNE–SSW and NW–SE. These trends are interpreted mostly as basement faults but at few places, they might be associated with sills/dykes. The geological setup of the bank is fault-bounded and comprised of two horst structure (interpreted as spurs) trending NE–SW to NNE–SSW. Integrated interpretation of the geophysical data revealed that the Angria Bank is an isolated feature, evolved during rifting between India and Seychelles-Laxmi Ridge in the Late Cretaceous.

中文翻译：

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印度西部大陆边缘安格里亚河岸地壳结构和构造演化的综合地球物理评价

安格里亚河岸（Angria Bank）是一片被珊瑚礁淹没的高原，位于印度中西部沿海地区。从生物学上讲，该银行以其珊瑚形成吸引科学界。但是由于地质和地球物理数据的稀缺性，在地质上，尚未确定该特征的起源和构造背景。新获得的测深和磁数据以及现有的地球物理数据使我们能够确定安格里亚银行的地壳结构和构造演化。该河岸的整个地质构造包括34公里长的高原（平均水深〜20 m），以及两个向西延伸的突出刺。水高原面积和整个地质构造分别为365 km ²和1460 km ²， 分别。该银行的特点是两个突出的磁性低点，中间有一个相对较高的地方。综合的重力和磁学模型表明，洪水玄武岩覆盖了整个地质结构，后来成为珊瑚生长的基础。堤岸下面的地壳本质上是大陆性的，并被高密度岩浆物质所覆盖。莫霍面几乎是平坦的，位于约27公里的深度。3D Euler反卷积的结果表明，研究区域具有两种类型的线性趋势即特征。NE–SW到NNE–SSW和NW–SE。这些趋势主要被解释为基底断裂，但在少数地方，它们可能与基岩/堤坝有关。河岸的地质构造是断层限定的，由两个从NE-SW到NNE-SSW的霍斯特结构（被解释为马刺）组成。