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首页> 外文期刊>Earth, planets and space: EPS >Aeromagnetic evidence for the arcuate shape of Mahanadi Delta, India
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Aeromagnetic evidence for the arcuate shape of Mahanadi Delta, India

机译：印度马哈纳迪三角洲的弧形形状的航空磁学证据

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The stream network comprising Mahanadi and its tributaries, viz. Katjhori, Devi, Koyakhai, Kushbhadra and Bhargavi, cut transversely the ESE-WNW trending basement structure in the Cuttack-Paradip-Puri section and diverge radially from one another near and around Cuttack. The Mahanadi river flows in an ESE-WNW direction, the Katjhori and Devi rivers flow in a NW-SE direction and Koyakhai, Kushbhadra and Bhargavi River in an almost N-S direction. The general southeasterly direction of these rivers and the delta formation was thought to be continued throughout the Quaternary period and the delta was a case of superposition upon the deformational structures derived from the erosional surfaces covered by recent sediments. Analysis of the aeromagnetic anomaly field of the Mahanadi Delta area of the on-shore portion has indicated three prominent structural trends in ESE-WNW, NW-SE and N-S directions along which the rivers Mahanadi/Chitratala, Katjhori and Devi, Koyakhai, Kushbhadra and Bhargavi flow, respectively. The tectonic disturbance along the N-S direction, in the western part of Bhubaneswar-Puri section, seems to have been controlling the Koyakhai and Kushbhadra and Bhargavi river system, following the possible trace of 85°E Ridge, whereas the concealed NW-SE trending Mahanadi graben trend is inferred to be the probable cause for the NW-SE flow of the Katjhori river in the middle portion south of Cuttack and the ESE-WNW flow of the Mahanadi and Chitratala rivers in the Cuttack-Paradip section controlled by the Eastern Ghat trend.
机译：包括Mahanadi及其支流的流网络。 Katjhori，Devi，Koyakhai，Kushbhadra和Bhargavi在Cuttack-Paradip-Puri部分横切了ESE-WNW趋势基底结构，并在Cuttack附近和周围彼此径向分开。 Mahanadi河沿ESE-WNW方向流动，Katjhori和Devi河沿NW-SE方向流动，而Koyakhai，Kushbhadra和Bhargavi河沿N-S方向流动。这些河流的总体东南方向和三角洲形成被认为在整个第四纪期间都将继续，三角洲是叠加在由最近沉积物覆盖的侵蚀面衍生的变形结构上的一种情况。对陆上Mahanadi三角洲地区的航空磁异常场的分析表明，在ESE-WNW，NW-SE和NS方向上存在着三个主要的结构趋势，沿这三个方向，Mahanadi / Chitratala，Katjhori和Devi，Koyakhai，Kushbhadra和巴尔加维流分别。在布巴内斯瓦尔-普里段西部，沿NS方向的构造扰动似乎一直在控制着科雅克海，库什巴德拉和巴尔加维河水系，可能追随了85°E脊的踪影，而隐蔽的西北-东南走向的马哈纳迪据推测，割趋势可能是由Cuttack-Paradip区域控制的Cuttack南部以南的Katjhori河的NW-SE流量和Cuttack-Paradip段的Mahanadi和Chitratala河的ESE-WNW流量的可能原因。 。

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