Citation:

PANGAEA.974306 (DOI registration in progress)

Name: Radiocarbon age and chronology of sediment core SK-312/12
Published: 2025-04-15
License: https://creativecommons.org/licenses/by/4.0/

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2025-04-15

RIS Citation BibTeX Citation Text Citation ShareShow Map Google Earth

Abstract:

Sediment core SK-312/12 was collected from the Equatorial Indian Ocean at 3750m b.s.l.. Radiocarbon age-depth profile was continuous up to 70 cm of the core length. The core was sampled at each 1 cm interval. Nearly alternate sections were processed to separate foraminiferal carbonates from the bulk sediment. Radiocarbon ages were obtained from radiocarbon dating of mixed-layer species Globigerinoides ruber and Trilobatus sacculifer taken in sub-equal amounts from 250-425µm size fraction. The radiocarbon ages were calibrated with respect to the MARINE20 Calibration curve (Heaton et al., 2020) with a modern reservoir age (ΔR) of -54 + 65 yr (Dutta et al., 2001; Southon et al., 2002) under the R package "Bacon" (Blaauw & Christeny, 2011), and the Bayesian chronology was obtained.

Related to:

Jena, Sanjit Kumar; Kumar, Sanjit; Bhushan, Ravi; Sarathi, Partha; Bharti, Nisha; Sudheer, A K; Sanyal, Prasanta; Shivam, Ajay; Dhabi, Ankur (preprint): The Indian Monsoon and North Atlantic Tele-climatic Controls upon the Arabian Sea High Salinity Water Variability into the Equatorial Indian Ocean during the Last Glacial-Interglacial Transition. https://doi.org/10.22541/essoar.171535394.43097288/v1

References:

Blaauw, Maarten; Christen, Andrés (2011): Flexible paleoclimate age-depth models using an autoregressive gamma process. Bayesian Analysis, 6(3), 457-474, https://doi.org/10.1214/11-BA618

Dutta, Koushik; Bhushan, Ravi; Somayajulu, Bammidipati L K (2001): ΔR Correction Values for the Northern Indian Ocean. Radiocarbon, 43(2A), 483-488, https://doi.org/10.1017/S0033822200038376

Heaton, Timothy J; Köhler, Peter; Butzin, Martin; Bard, Edouard; Reimer, Ron W; Austin, William EN; Ramsey, Christopher Bronk; Grootes, Pieter Meiert; Hughen, Konrad A; Kromer, Bernd; Reimer, Paula J; Adkins, Jess F; Burke, Andreas; Cook, Mea S; Olsen, Jesper; Skinner, Luke C (2020): Marine20 - the marine radiocarbon age calibration curve (0-55,000 cal BP). Radiocarbon, 62(4), 779-820, https://doi.org/10.1017/RDC.2020.68

Southon, John; Kashgarian, Michaele; Fontugne, Michel R; Metivier, Bernard; Yim, Wyss W-S (2002): Marine reservoir corrections for the Indian Ocean and Southeast Asia. Radiocarbon, 44(1), 167-180, https://doi.org/10.1017/S0033822200064778

Project(s):

Global marine biogeochemical cycles of trace elements and their isotopes (GEOTRACES)

Coverage:

Latitude: -0.006800 * Longitude: 65.004830

Date/Time Start: 2014-05-16T00:00:00 * Date/Time End: 2014-05-16T00:00:00

Minimum DEPTH, sediment/rock: 0.040 m * Maximum DEPTH, sediment/rock: 0.695 m

Event(s):

SK312/12-13 * Latitude: -0.006800 * Longitude: 65.004830 * Date/Time: 2014-05-16T00:00:00 * Elevation: -3750.0 m * Recovery: 5.5 m * Campaign: * Basis: Sagar Kanya * Method/Device: Gravity corer (GC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Jena, Sanjit Kumar		Geocode
2	Age, dated	Age dated	ka BP	Jena, Sanjit Kumar	Age, 14C
3	Age, dated standard error	Age std e	±	Jena, Sanjit Kumar	Age, 14C
4	Calendar age	Cal age	ka BP	Jena, Sanjit Kumar
5	Calendar age, standard error	Cal age std e	±	Jena, Sanjit Kumar
6	Δ14C, mixed layer	Δ14C ML	‰	Jena, Sanjit Kumar

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

95 data points

Download Data

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

View dataset as HTML