Citation:

PANGAEA.948036

Name: Benthic foraminiferal oxygen isotopes of IODP Site 363-U1483
Published: 2022-09-08
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Australian Monsoon; IODP Expedition 363; Middle Pleistocene Transition

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Abstract:

We selected three to eight well-preserved specimens of the benthic foraminiferal species Cibicidoides wuellerstorfi and/or Cibicidoides mundulus from the size fraction >250 μm. In 29 samples, only 1-2 specimens were analyzed and in 12 samples the species Uvigerina spp. or Hoeglundina elegans were measured, when C. wuellerstorfi and C. mundulus were rare or absent. Tests were broken into large fragments and cleaned in ethanol in an ultrasonic bath, then dried at 40°C. Measurements were performed with a Finnigan MAT 253 mass spectrometer coupled online to a Carbo-Kiel IV device for automated CO2 preparation from carbonate samples at the Leibniz Laboratory for Radiometric Dating and Stable Isotope Research, Christian-Albrechts-University Kiel. Samples were reacted by individual acid addition (99% H3PO4 at 75°C). The external standard error is better than ±0.08‰ and ±0.05‰ for δ18O, based on international standards. Results were calibrated using the National Institute of Standard and Technology (NIST) (Gaithersburg, Maryland) carbonate isotope standard NBS (National Bureau of Standard) 19, and the international carbonate standard IAEA (International Atomic Energy Agency) 603 and reported on the Vienna PeeDee Belemnite (VPDB) scale. Duplicate measurements of 32 samples show an average standard deviation of 0.08‰ for δ18O. We applied a correction factor of −0.64‰ to Uvigerina δ18O and of -1.26‰ for Hoeglundina δ18O to normalize values to C. wuellerstorfi δ18O.

Keyword(s):

Australian Monsoon; IODP Expedition 363; Middle Pleistocene Transition

Project(s):

Integrated Ocean Drilling Program / International Ocean Discovery Program (IODP)

Funding:

German Research Foundation (DFG), grant/award no. Ku649/37-1: Impact of Middle Pleistocene Transition on Australian Monsoon

Coverage:

Median Latitude: -13.087351 * Median Longitude: 121.804166 * South-bound Latitude: -13.087465 * West-bound Longitude: 121.804040 * North-bound Latitude: -13.087285 * East-bound Longitude: 121.804230

Date/Time Start: 2016-10-25T22:30:00 * Date/Time End: 2016-10-30T00:00:00

Minimum DEPTH, sediment/rock: 39.61 m * Maximum DEPTH, sediment/rock: 142.51 m

Event(s):

363-U1483A * Latitude: -13.087303 * Longitude: 121.804040 * Date/Time Start: 2016-10-25T22:30:00 * Date/Time End: 2016-10-27T16:50:00 * Elevation: -1733.0 m * Penetration: 293.3 m * Recovery: 308.58 m * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL)

363-U1483B * Latitude: -13.087285 * Longitude: 121.804230 * Date/Time Start: 2016-10-27T16:50:00 * Date/Time End: 2016-10-28T18:10:00 * Elevation: -1734.0 m * Penetration: 287.0 m * Recovery: 301.62 m * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL)

363-U1483C * Latitude: -13.087465 * Longitude: 121.804228 * Date/Time Start: 2016-10-28T18:10:00 * Date/Time End: 2016-10-30T00:00:00 * Elevation: -1731.0 m * Penetration: 292.42 m * Recovery: 284.8 m * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Holbourn, Ann E
2	Sample code/label	Sample label		Holbourn, Ann E	DSDP/ODP/IODP sample designation
3	DEPTH, sediment/rock	Depth sed	m	Holbourn, Ann E	IODP Depth Scale Terminology	Geocode – CSF-A (mbsf)
4	Depth, composite revised	Depth comp r	rmcd	Holbourn, Ann E	IODP Depth Scale Terminology	r-CCSF (r-mcd)
5	AGE	Age	ka BP	Holbourn, Ann E		Geocode
6	Cibicidoides wuellerstorfi, δ18O	C. wuellerstorfi δ18O	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	size fraction >250 µm
7	Cibicidoides wuellerstorfi, δ13C	C. wuellerstorfi δ13C	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	size fraction >250 µm
8	Cibicidoides mundulus, δ18O	C. mundulus δ18O	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	size fraction >250 µm
9	Cibicidoides mundulus, δ13C	C. mundulus δ13C	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	size fraction >250 µm
10	Cibicidoides spp., δ18O	Cibicidoides spp. δ18O	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	C. wuellerstorfi/C. mundulus, size fraction >250 µm
11	Cibicidoides spp., δ13C	Cibicidoides spp. δ13C	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	C. wuellerstorfi/C. mundulus, size fraction >250 µm
12	Hoeglundina elegans, δ18O	H. elegans δ18O	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	size fraction >250 µm
13	Hoeglundina elegans, δ13C	H. elegans δ13C	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	size fraction >250 µm
14	Uvigerina spp., δ18O	Uvigerina spp. δ18O	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	size fraction >250 µm
15	Uvigerina spp., δ13C	Uvigerina spp. δ13C	‰ PDB	Holbourn, Ann E	Mass spectrometer, Finnigan, MAT 253	size fraction >250 µm

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

4564 data points

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