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Paleothermometric fluctuations and ornamentation pattern of Ostracoda species from a short core, off Ongole, Bay of Bengal, South-east Indian coast

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Title Paleothermometric fluctuations and ornamentation pattern of Ostracoda species from a short core, off Ongole, Bay of Bengal, South-east Indian coast
 
Creator Nazeer, M N
Hussain, S M
Krishna, V M
Nishath, N M
Sunitha, D
 
Subject Bay of Bengal
Element partitioning
Ornamentation
Ostracods
Shell microchemistry
 
Description 819-824
An investigation on the elemental chemistry and its fluctuation in Ostracoda carapace to render the environmental traits
from off Ongole, Andhra Pradesh is outlined in the paper. Paleothermometric elucidation of the environment using elements
Ca, Mg, As, Nb, Sb, Al, Si, Cl, K and Na and the ornamentation pattern exhibited by Ostracoda are identified and ventilated.
A short core of length 20 cm was collected from the study area using a multicorer during the ORV Sagar Kanya cruise
(SK-308 Leg 1) fieldwork, at a water depth of 47 m. Ostracoda separated from the sediment matrix were subjected to
standard micro-paleontological procedures. The elemental weight percentages reveal that the distribution of the elements in
the carapace for different species is not the same and fluctuates along the downcore. The occurrence of Niobium in the
offshore sediments is observed to be of terrestrial influence, which is derived from granitic and pegmatite rocks of the
adjoining coastal terrain. A traceable quantity of Antimony and Arsenic is identified in the carapace of the certain
Ostracoda. Mg/Ca ratio in carapace indicates that an endurance of mild temperature fluctuation to the downcore. Smooth,
spinose, pitted, punctate and reticulate ornamentation are found occurring in Ostracoda carapace which reflects on the
depositional environment and granulometry.
 
Date 2022-03-03T04:38:07Z
2022-03-03T04:38:07Z
2021-10
 
Type Article
 
Identifier 2582-6727 (Online); 2582-6506 (Print)
http://nopr.niscair.res.in/handle/123456789/59256
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJMS Vol.50(10) [October 2021]