ISSN:
1432-1157
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
Notes:
Abstract Previous studies on the distribution and morphology of ancient seamount chains (〉 50 Ma) in the Central Indian Ocean basin (CIOB) indicated their generation from the fast spreading Southeast Indian Ridge. Here we describe the petrology of some of these seamounts. Fresh glass veneers of pillow basalts from these seamounts were analyzed by electron microprobe. The rocks show a low content of TiO2 and FeO and moderate Mg# suggesting slow eruption of a minimally fractionated N-MORB magma. In terms of chemistry and morphology, CIOB seamounts are indistinguishable from seamounts across slow spreading MAR and fast spreading EPR.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01275414
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