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Basinal seamounts and seamount chains of the Central Indian Ocean: Probable near-axis origin from a fast-spreading ridge

DRS at CSIR-National Institute of Oceanography

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Title Basinal seamounts and seamount chains of the Central Indian Ocean: Probable near-axis origin from a fast-spreading ridge
 
Creator Mukhopadhyay, R.
Batiza, R.
 
Subject Geology and Geophysics
Geology and Geophysics
seamounts
seamount chains
spreading centres
petrography
volcanism
ISW, Central Indian Ocean
 
Description Hydrosweep mapping of crust in the Central Indian Ocean Basin reveals abundant volcanoes occurring both as isolated seamounts and linear seamount chains parallel to flow lines. Their shapes, sizes and overall style of occurrence are indistinguishable from near-axis seamounts in the Pacific. Evidence from seamount morphology, distributions and petrography of dredged samples suggests that they were generated near the fast-spreading Southeast Indian Ridge at 50-60 Ma. If so, this style of near-axis seamount generation may be a result of fast-spreading rate rather than a peculiarity of the present pacific spreading ridges. In fact, the results of several recent studies, taken together, suggest that the style of axis/near-axis seamount volcanism varies systematically as a function of spreading rate
 
Date 1994-10-18T10:06:27Z
2017-09-30T02:52:21Z
1994-10-18T10:06:27Z
2017-09-30T02:52:21Z
1994
 
Type Journal Article
 
Identifier Marine Geophysical Research, vol.16(4); 1994; 303-314
0025-3235
http://drs.nio.org/drs/handle/2264/7472
 
Language en
 
Relation Mar Geophys Res
SCI
 
Publisher American Geophysical Union