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Subantarctic Foraminiferal Mg/Ca Data and SST Reconstruction
Entry ID: NOAA_NCDC_PALEO_2001-022

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Summary
Abstract: This data set consists of Globigerina bulloides Mg/Ca as a paleotemperature
proxy. Indicated glacial-interglacial changes in sea surface temperature (SST)
are about 4°C cooler in the Subantarctic Indian Ocean and 2.5°C cooler in the
Subantarctic Pacific.

Mg/Ca-based SST estimates and d18O determinations are then used to generate
site-specific seawater d18O records.

Data precision: Mg/Ca, ±2.1%; SST (est.), ±0.8°C; O18w (est.), ±0.2"

G. bulloides O18 interpolated from Hays et al., 1976 and Imbrie et al., 1992,
Mg/Ca data on cleaned G. bulloides shells by ICP-MS,
SST estimates based on eq. (5) in Mashiotta et al., 1999,
O18w calculated from bulloides O18 data, Mg/Ca-temperature estimates and
Shackleton, 1974 paleo-temperature equation.

chrono-strat info: SPECMAP age model from Imbrie et al, 1992

File E11-2.txt
Core E11-2
56°04'S
115°05'W
3094m water depth

Variables and units: Depth (cm), Age (ky), N. pachyderma (s) O18 (PDB),
Mg/Ca (mmol/mol), SST (°C), O18w (SMOW)

Data precision: Mg/Ca, ±2.1%; SST (est.), ±1°C; O18w (est.), ±0.2"

N. pachyderma (s) O18 interpolated from Ninnemann and Charles, 1997,
Mg/Ca data on cleaned N. pachyderma (s) shells by ICP-MS,
SST estimates based on eq. (6) in Mashiotta et al., 1999,
O18w calculated from pachyderma O18 data, Mg/Ca-temperature estimates and
Shackleton, 1974 paleo-temperature equation.

chrono-strat info: calendar age model from Ninnemann and Charles, 1997

Related URL
Link: GET DATA
Description: Access to data files


Link: VIEW RELATED INFORMATION
Description: Access to documentation


Geographic Coverage
 N: -43.52 S: -43.52  E: 79.87  W: 79.87
 Max Depth: 3135 M
 N: -54.07 S: -54.07  E: -115.08  W: -115.08
 Max Depth: 3094 M

Data Set Citation
Dataset Originator/Creator: Mashiotta, T. A., D.W. Lea, and H.J. Spero
Dataset Title: Subantarctic Foraminiferal Mg/Ca Data and SST Reconstruction
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2001-022
Dataset Release Date: 3/2001
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: 2001-022
Other Citation Details: NOAA/NCDC Paleoclimatology Program
Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/mas...


Paleo_Temporal_Coverage
Paleo Start Date: 290 ka
Paleo Stop Date: 0 ka
Chrono Unit:


Location Keywords
OCEAN > SOUTHERN OCEAN
GEOGRAPHIC REGION > POLAR


Science Keywords
PALEOCLIMATE >OCEAN/LAKE RECORDS >ISOTOPES    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >MICROFOSSILS    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >OXYGEN ISOTOPES    [Definition]
PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >SEA SURFACE TEMPERATURE RECONSTRUCTION    [Definition]
BIOLOGICAL CLASSIFICATION >PROTISTS >AMOEBOIDS >FORAMINIFERS    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Project
PAGES >Past Global Changes, IGBP    [Information]


Keywords
Sea Surface Temperature
SST Reconstruction
d18O
Mg/Ca
Subantarctic Pacific


Data Set Progress
COMPLETE


Originating Center
NOAA/NCDC


Data Center
World Data Center for Paleoclimatology, Boulder    [Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/

Data Center Personnel
Name: WDC/PALEOCLIMATOLOGY, BOULDER
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
NOAA/NCDC Code E/GCx3
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA



Distribution
Distribution_Media: ftp
Distribution_Format: text
Fees: none


Personnel
DAVID W. LEA
Role: INVESTIGATOR
Phone: (805) 893-8665
Fax: (805) 893-2314
Email: lea at magic.ucsb.edu
Contact Address:
Department of Geological Sciences and Marine Science Institute
University of California
City: Santa Barbara
Province or State: CA
Postal Code: 93106
Country: USA


T. A. MASHIOTTA
Role: INVESTIGATOR


HOWARD J. SPERO
Role: INVESTIGATOR
Contact Address:
Department of Geology
University of California
City: Davis
Province or State: CA
Postal Code: 95616
Country: USA


Publications/References
Mashiotta, T. A., D.W. Lea, and H.J. Spero, 1999. Glacial-interglacial changes
in Subantarctic sea surface temperature and d18O-water using foraminiferal Mg.
Earth Planet. Sci. Lett. 170, 417-432.

Creation and Review Dates
DIF Creation Date: 2006-12-08
Last DIF Revision Date: 2016-01-27



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