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Yadav, Ramanand; Naik, Sushant S (2022): Calcium carbonate, sedimentary organic carbon, and shell weight of selected planktic foraminifera from ODP Hole 115-716A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.949551

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Published: 2022-10-11 • DOI registered: 2022-11-16

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Abstract:
To understand the variations in carbonate burial for the last 30 kiloannum (ka), we have utilized a core from the Ocean DrillingProgram (ODP), Site716A (04.56°N and 73.17°E) retrieved from a water depth of 533 m from the Maldives (carbonate platform) Sea. We analyzed calcium carbonate (CaCO%), sedimentary organic carbon (C-org %) and shell weights of selected planktic foraminifera species (Globigerinoides ruber, Pulleniatina obliquiloculata and Neogloboquadrina dutertrei) to see the contrast in carbonate preservation during the late last glacial-Holocene. Our dataset reveals that carbonate preservation declined during the last glacial maximum (LGM) and the Holocene, probably due to organic matter degradation in sediments. The ratio of C-org/CaCO was relatively higher during the LGM than during the last deglacial period (LDP) and the Holocene. Furthermore, the heavier planktic foraminifera shell weights during the LDP indicate relatively increased carbonate preservation, which is linked to the deglacial release of carbon dioxide (CO₂) from the ocean to the atmosphere.
Keyword(s):
CaCO 3 %; carbonate preservation; Maldives carbonate platform; shell weights
Related to:
Yadav, Ramanand; Naik, Sushant S (2022): Glacial-interglacial differences in carbonate burial in the equatorial Indian Ocean. Geo-Marine Letters, 42(3), 12, https://doi.org/10.1007/s00367-022-00736-9
Project(s):
Ocean Drilling Program (ODP)
Funding:
Department of Science and Technology (DST), grant/award no. MLP 2014: Long-term evolution of monsoon and associated processes (LEMAP)
Coverage:
Latitude: 4.933300 * Longitude: 73.283300
Date/Time Start: 1987-06-28T14:45:00 * Date/Time End: 1987-06-29T12:30:00
Minimum DEPTH, sediment/rock: 0.20 m * Maximum DEPTH, sediment/rock: 1.06 m
Event(s):
115-716A * Latitude: 4.933300 * Longitude: 73.283300 * Date/Time Start: 1987-06-28T14:45:00 * Date/Time End: 1987-06-29T12:30:00 * Elevation: -544.0 m * Penetration: 257.1 m * Recovery: 262.68 m * Location: Lakshadweep Sea * Campaign: Leg115 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 257.1 m cored; 0 m drilled; 102.2 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 DEPTH, sediment/rockDepth sedmYadav, RamanandGeocode
2 AGEAgeka BPYadav, RamanandGeocode
3 Calcium carbonateCaCO3%Yadav, Ramanand
4 Carbon, organicC org%Yadav, Ramanand
5 Carbon, organic/calcium carbonate ratioC org/CaCO3Yadav, Ramanand
6 Neogloboquadrina dutertrei, shell, weightN. dutertrei shell WµgYadav, Ramanand
7 Pulleniatina obliquiloculata, shell, weightP. obliquiloculata shell WµgYadav, Ramanand
8 Globigerinoides ruber, shell, weightG. ruber shell WµgYadav, Ramanand
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
246 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Depth sed [m]		2 
Age [ka BP]		3 
CaCO3 [%]		4 
C org [%]		5 
C org/CaCO3		6 
N. dutertrei shell W [µg]		7 
P. obliquiloculata shell W [µg]		8 
G. ruber shell W [µg]
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