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Australasian microtektites in a substrate: A new constraint on ferromanganese crust accumulation rates

DRS at CSIR-National Institute of Oceanography

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Title Australasian microtektites in a substrate: A new constraint on ferromanganese crust accumulation rates
 
Creator ShyamPrasad, M.
 
Subject Geology and Geophysics
Geology and Geophysics
ferromanganese nodules
geochemistry
mineralogy
growth
extraterrestrial material
ISW, Indian Ocean
 
Description Microtektites belonging to the Australasian tektite strewn field are found in the substrate of a ferromanganese crust dredged from the Central Indian Basin. They are identified on their physical appearance, geographic occurrence and chemical composition. The ferromanganese crust has a thickness range of 6-17 mm, and its chemistry and mineralogy indicate hydrogenic accretion. Because the Australasian strewn field has an age of approximately 0.77 Ma, this finding implies that the overlying Fe-Mn crust has minimum accretion rates of 7.8-22.1 mm/Myr, which are much higher than the average growth rates of hydrogenic crusts
 
Date 1997-07-05T10:06:25Z
2017-09-30T02:52:21Z
1997-07-05T10:06:25Z
2017-09-30T02:52:21Z
1994
 
Type Journal Article
 
Identifier Marine Geology, vol.116(3-4); 1994; 259-266
0025-3227
http://drs.nio.org/drs/handle/2264/7471
 
Language en
 
Relation Mar Geol
SCI
 
Publisher Elsevier