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Biostratigraphic analysis of the top layer of sediment cores from the reference and test sites of the INDEX area

DRS at CSIR-National Institute of Oceanography

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Title Biostratigraphic analysis of the top layer of sediment cores from the reference and test sites of the INDEX area
 
Creator Gupta, S.M.
 
Subject sediments
cores
biostratigraphy
fossil radiolaria
benthos
environmental impact
site selection
deep-sea mining
 
Description Radiolarian fossil study in the sediment cores collected during the pre- and postdisturbance cruises of the Environmental Impact Assessment (EIA) Indian Ocean Experiment (INDEX) program of deep sea mining in the Central Indian Ocean Basin suggests a pronounced directional deposition of fossil radiolarians exhumed during the deep sea benthic disturbance experiment. The relative occurrences of the Stylatractus universus species that became extinct approx. 0.425 million years before present were mostly confined to the older and deeper strata of the sediment of the disturbance tract in the southwestern direction. This pattern is remarkable and suggests that the disturbance plume has been preferentially redeposited in the southwestern direction. This observation is in concurrence with the prevailing southwestern abyssal current during the disturbance experiment in the Central Indian Basin
 
Date 2009-01-09T08:22:32Z
2009-01-09T08:22:32Z
2000
 
Type Journal Article
 
Identifier Marine Georesources and Geotechnology, Vol.18; 259-262p.
http://drs.nio.org/drs/handle/2264/1682
 
Language en
 
Rights Copyright [2000]. 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 and Francis