Magnetic anomalies over the Andaman Islands and their geological significance
Article
Article Title | Magnetic anomalies over the Andaman Islands and their geological significance |
---|---|
ERA Journal ID | 1071 |
Article Category | Article |
Authors | Rao, Subba (Author), Radhakrishna, M. (Author), Haripriya, K. (Author), Rao, Someswara (Author) and Chandrasekharam, D. (Author) |
Journal Title | Journal of Earth System Science |
Journal Citation | 125 (2), pp. 359-368 |
Number of Pages | 10 |
Year | 2016 |
Place of Publication | India |
ISSN | 0253-4126 |
0973-774X | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s12040-016-0660-7 |
Web Address (URL) | https://link.springer.com/article/10.1007%2Fs12040-016-0660-7 |
Abstract | The Andaman Islands form part of the outer-arc accretionary sedimentary complex belonging to the Andaman–Sumatra active subduction zone. The islands are characterized by thick cover of Neogene sediments along with exposed ophiolite rocks at few places. A regional magnetic survey was carried out for the first time over the Andaman Islands with a view to understand the correlation of anomaly signatures with surface geology of the islands. The residual total field magnetic anomaly maps have revealed distinct magnetic anomalies having intermediate to high amplitude magnetic signatures and correlate with the areas over/close to the exposed ophiolite rocks along the east coast of north, middle and the south Andaman Islands. The 2D modelling of magnetic anomalies along selected E–W profiles across the islands indicate that the ophiolite bodies extend to a depth of about 5–8 km and spatially correlate with the mapped fault/thrust zones. |
Keywords | magnetic survey, ophiolites, magnetic anomalies, Andaman Islands, North-East Indian Ocean |
ANZSRC Field of Research 2020 | 370899. Oceanography not elsewhere classified |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Indian Institute of Geomagnetism, India |
Indian Institute of Technology, India | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5226/magnetic-anomalies-over-the-andaman-islands-and-their-geological-significance
Download files
169
total views119
total downloads3
views this month2
downloads this month