Record Details

Inter-relationship between nuclei and gross characteristics of manganese nodules, Central Indian Ocean Basin

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Inter-relationship between nuclei and gross characteristics of manganese nodules, Central Indian Ocean Basin
 
Creator Sarkar, C.
Iyer, S.D.
Hazra, S.
 
Subject Central Indian Ocean basin
Indian Ocean
hydrogenous accretion
manganese nodules
todorokite
 
Description More than 200 samples of manganese nodules from the Central Indian Ocean Basin (CIOB) were studied for their different parameters. The study included various aspects such as morphology, texture, mineralogy, and composition of the nodules. The nuclei of the nodules were also examined along with the oxide layers. We attempt to correlate the nucleus (their type and abundance) with the nodule parameters such as their external morphology, chemical composition, and suitable location of formation, amongst others. We found various nucleating materials and these include rock fragments (fresh and altered), clay, pumice and sharks’ teeth. In a majority of the cases, rock fragments are dominant in the core of the nodules and these conform to that of the seafloor basalts. The shape of the nuclei influences that of the nodules, especially during their initial period of growth. Irrespective of the kind of nuclei, todorokite is the main mineral of the nodules. The nodules of the CIOB were formed mostly due to hydrogenous accretion of ferromanganese oxides while diagenetic contribution of metals is less common.
 
Date 2009-02-11T07:05:59Z
2009-02-11T07:05:59Z
2008
 
Type Journal Article
 
Identifier Marine Georesources and Geotechnology, vol.26(4); 259-289
http://drs.nio.org/drs/handle/2264/2581
 
Language en
 
Rights Copyright [2008]. 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 Taylor & Francis