Comparative analysis of the structure of the tectonosphere of the Conrad and Afanasy Nikitin Rises by geophysical data (the Indian Ocean)
https://doi.org/10.33623/0579-9406-2019-2-88-93
Abstract
A two-dimensional density modeling is performed for profiles crossing the seamounts of the Conrad Rise (Lena, Ob and Marion Dufresne), which are located in the southwestern part of the Indian Ocean and the Afanasy Nikitin Rise, which is located in the central part of the Indian Ocean. According to the assumptions of a number of researchers, the seamount Marion Dufresne and the Afanasy Nikitin Rise were formed as a result of the hotspot 83–73 million years ago. The results of two-dimensional density modeling showed a similar structure of the crust and lithosphere, which confirms the probability of their formation 83–73 million years ago as a result of the action of a single hotspot. Also on the basis of the obtained results, the assumption is confirmed that the seamounts Lena and Ob of the Conrad Rise were formed afterwards due to the continuation of the action of the hotspot under the Antarctic Plate.
About the Authors
A. A. ShaikhullinaRussian Federation
E. P. Dubinin
Russian Federation
A. A. Bulychev
Russian Federation
D. A. Gilod
Russian Federation
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Review
For citations:
Shaikhullina A.A., Dubinin E.P., Bulychev A.A., Gilod D.A. Comparative analysis of the structure of the tectonosphere of the Conrad and Afanasy Nikitin Rises by geophysical data (the Indian Ocean). Moscow University Bulletin. Series 4. Geology. 2019;(2):88-93. (In Russ.) https://doi.org/10.33623/0579-9406-2019-2-88-93