Globorotalia truncatulinoides (R) Mg/Ca Water Temperature Calibration

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: McKenna, V. S., and W. L. Prell
Publication_Date: 4/2004
Title: Globorotalia truncatulinoides (R) Mg/Ca Water Temperature Calibration
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2004-018
Issue_Identification: 2004-018
Publication_Information:
Publication_Place: Boulder, CO
Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Other_Citation_Details:
NOAA/NCDC Paleoclimatology Program
Online_Linkage: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/mckenna2004/mckenna2004.txt
Description:
Abstract:
This data set consists of Globorotalia truncatulinoides (R) Mg/Ca to water temperature calibrations from Indian Ocean core-top sediments and plankton tows. G. truncatulinoides (R) is a deep dwelling species that provides a Mg thermometer for the extremes of the permanent thermocline. Abstract Recent work has provided useful Mg/Ca to water temperature calibrations for shallow-dwelling planktonic foraminifer species. Globorotalia truncatulinoides (right coiling (R)) is a deep-dwelling species that can serve as a source of information about the temporal variability in the water characteristics of the thermocline. We present a temperature calibration for the Mg/Ca in the shell of G. truncatulinoides (R) and examine some of the practical issues associated with evaluating the usefulness of the technique. The Mg/Ca in the primary and the secondary calcite of individual G. truncatulinoides (R) correlates exponentially with water column temperatures, showing a change of ~10% in the Mg/Ca per 1°C (R2 = 0.92). A limited comparison with plankton tow samples demonstrates that the average Mg/Ca temperature was offset +1°C from the average temperature calculated using the D18O calibration of O'Neil et al. [1969], and the Mg/Ca temperatures have a range similar to the d18O temperatures. Comparisons of the [Mg] in the core top samples to water depth of deposition indicates that dissolution does not alter the measured value of Mg in the primary calcite.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: McKenna, V. S., and W. L. Prell. 2004. Calibration of the Mg/Ca of Globorotalia truncatulinoides (R) for the reconstruction of marine temperature gradients. Paleoceanography, 19, PA2006, doi:10.1029/2000PA000604.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 63.15
East_Bounding_Coordinate: 82.25
North_Bounding_Coordinate: 12.05
South_Bounding_Coordinate: -39.72
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 29.74
East_Bounding_Coordinate: 29.74
North_Bounding_Coordinate: 63.0
South_Bounding_Coordinate: 63.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > THERMOCLINE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > ISOTOPES
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > MICROFOSSILS
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > SEDIMENTS
Theme_Keyword: PAGES > PAST GLOBAL CHANGES, IGBP
Theme_Keyword: Sediment
Theme_Keyword: Water Temperature
Theme_Keyword: Thermocline
Theme_Keyword: Mg/ca
Theme_Keyword: Marine Temperature Gradients
Theme_Keyword: Plankton Tow
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > INDIAN OCEAN
Place_Keyword: OCEAN > ARCTIC OCEAN > BARENTS SEA
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VICKI S. MCKENNA
Contact_Person_Primary:
Contact_Person: WARREN L. PRELL
Contact_Position: INVESTIGATOR
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Brown University
City: Providence
State_or_Province: RI
Postal_Code: 02912
Country: USA
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: WDC/PALEOCLIMATOLOGY, BOULDER > World Data Center for Paleoclimatology, Boulder
Contact_Person: WDC/PALEOCLIMATOLOGY, BOULDER
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: World Data Center for Paleoclimatology
Address: NOAA/NCDC Code E/GCx3
Address: 325 Broadway
City: Boulder
State_or_Province: CO
Postal_Code: 80303
Country: USA
Contact_Voice_Telephone: +1 (303) 497-6160
Contact_Facsimile_Telephone: +1 (303) 497-6513
Contact_Electronic_Mail_Address: paleo@noaa.gov
Resource_Description: NOAA_NCDC_PALEO_2004-018
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: text, excel
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.ncdc.noaa.gov/paleo/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/b...
Access_Instructions:
Access to documentation and data files
Fees: None
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Metadata_Reference_Information:
Metadata_Date: 20061213
Metadata_Review_Date: 20070215
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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