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AFI 02/36_04 - Geochemical Tracing of Pacific-to-Atlantic Mantle Flow through the Drake Passage/Scotia Sea Gateway - Geochemical analysis of rock samples collected by dredging in the Scotia Sea, February and March 2004
Entry ID: GB-NERC-BAS-AEDC-00279

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Summary
Abstract: The initial aim of this project was to carry out a higher resolution geochemical study of mantle flow using existing samples. This confirmed flow from the Bouvet domain into the East Scotia Sea and placed constraints on flow pathways. The second stage was to sample further within the West Scotia Sea and to use elemental and isotope (Sr, Nd, Pb, Hf) analyses to fingerprint mantle provenance. The results were used to locate and investigate the nature of the Pacific-South Atlantic mantle domain boundary and thus to contribute to the understanding and quantification of global upper mantle fluxes.

Related URL
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Description: Diary account of the field work for this project


Link: GET DATA
Description: This document is the Cruise Report, contianing a description of the field work undertaken in 2004 for this project, submited to the British Oceanographic Data Centre ("BODC").

Geographic Coverage
 N: -54.0 S: -58.0  E: -40.0  W: -55.0

Temporal Coverage
Start Date: 2001-10-01
Stop Date: 2005-09-30


Location Keywords
OCEAN > SOUTHERN OCEAN > Drake Passage
OCEAN > SOUTHERN OCEAN > Burdwood Fracture Zone
OCEAN > SOUTHERN OCEAN > Scotia Sea
OCEAN > SOUTHERN OCEAN > Lost Fracture Zone
OCEAN > SOUTHERN OCEAN > Endurance Fracture Zone
OCEAN > SOUTHERN OCEAN > Quest Fracture Zone
GEOGRAPHIC REGION > POLAR


Science Keywords
SOLID EARTH >GEOCHEMISTRY >GEOCHEMICAL PROPERTIES >ISOTOPES    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >ELEMENTS >MAJOR ELEMENTS    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >IGNEOUS ROCKS    [Definition]
SOLID EARTH >GEOCHEMISTRY >MARINE GEOCHEMICAL PROCESSES    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Access Constraints
This data is governed by the NERC Data Policy


Keywords
AXIL RIFT
GLOBAL UPPER MANTLE FLUXES
MANTLE DOMAIN BOUNDARY
MANTLE FLOW
MANTLE PROVENANCE
OCEANIC ROCK
SPREADING CENTRE


Data Set Progress
COMPLETE


Originating Center
BAS/AEDC/GSD


Data Center
Polar Data Centre, British Antarctic Survey, Natural Environment Research Council, United Kingdom    [Information]
Data Center URL: http://www.antarctica.ac.uk//about_bas/our_organisation/eid/pdc/ind...
Dataset ID: GB-NERC-BAS-AEDC-00279

Data Center Personnel
Name: HELEN CAMPBELL
Contact Address:
Polar Data Centre
British Antarctic Survey



Distribution
Distribution_Media: Online FTP
Fees: See Natural Environment Research Council (NERC) Data Policy


Personnel
AEDC BAS DATA MANAGER
Role: DIF AUTHOR
Phone: +44 (0)1223 221594
Phone: +44 (0) 1223 221312
Fax: +44 (0)1223 362616
Email: aedc at bas.ac.uk
Contact Address:
Antarctic Environmental Data Centre
British Antarctic Survey
High Cross, Madingley Road
City: Cambridge
Province or State: Cambridgeshire
Postal Code: CB3 0ET
Country: UNITED KINGDOM


TIFFANY BARRY
Role: INVESTIGATOR
Contact Address:
The Open University


PHILIP LEAT
Role: INVESTIGATOR
Contact Address:
British Antarctic Survey


Publications/References
Pearce, J.A. & Stern, R.J., 2006. The origin of back-arc basin magmas: trace element and isotope perspectives. AGU Geophys. Monograph Series, 166, 63-86

Pearce J.A. 2005. Mantle Preconditioning by Melt Extraction during Flow: Theory and Petrogenetic Implications. J. Petrol. 48 , 973-998.

Barry, T.L., Pearce, J.A., Leat, P.T., Millar, I.L. and A.P. le Roex. Hf isotope evidence for selective mobility of high-field-strength elements in a subduction setting: South Sandwich Islands. Earth and Planetary Science Letters, 252, 223-244.

Barry, T.L., Pearce, J.A., Leat, P.T. and Millar, I.L. 2005. Some isotopic constraints on fluid versus melt transfer from slab to wedge: Hf isotope evidence from the South Sandwich Arc. Geochim. Cosmochim. Acta, 69, A634-A634.

Leat, P.T., Pearce, J.A., Barker, P.F., Millar, I.L. and Larter, R.D. 2004. Magma genesis and mantle flow at a subducting slab edge: the South Sandwich arc-basin system. Earth and Planetary Science Letters, 227, 17-35.

Pearce, J.A., Stern, R.J., Barry, T.L., Leat, P.T. and Millar, I.L. 2004. Geochemical tracing of mantle flow above subduction zones. EOS Trans. Amer. Geophys. Union, 80 (47), T23D-02. Leat, P.T., Pearce, J.A., Livermore, R. and Morris, P. 2004. Cruise Report: JR77 & JR78.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2007-08-24
Last DIF Revision Date: 2017-08-23



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