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A note on incipient spilitisation of central Indian basin basalts

DRS at CSIR-National Institute of Oceanography

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Title A note on incipient spilitisation of central Indian basin basalts
 
Creator Karisiddaiah, S.M.
Iyer, S.D.
 
Description Rocks dredged in the vicinity of the 79 degrees E fracture zone, in the Central Indian Basin, are sub-alkaline basalts, which are regarded as precursors to spilites. The minerals identified are mainly albitic plagioclase, augite, olivine, and less of chlorite, epidote and opaques. The oxide variation plots indicate a mid-ocean ridge basalt trend for the samples, which have been spilitised to varying degrees. It is suggested that the basalts formed as a result of a fissure type of eruption along the fracture zone. Subsequently, some of the basalts were spilitised probably due to hydrothermal solution, possibly the result of tectonic activity along the fracture zone
 
Date 2009-05-08T11:56:16Z
2009-05-08T11:56:16Z
1992
 
Type Journal Article
 
Identifier Journal of the Geological Society of India, Vol.39; 518-523p.
http://drs.nio.org/drs/handle/2264/3029
 
Language en
 
Rights Copyright [1992]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Geological Society of India