Australian Antarctic Southern Ocean Profiling Project

Values provided in temporal and spatial coverage are approximate only. Metadata record for data from ASAC Project 1119 See the link below for public details on this project. A marked bend in the Hawaiian-Emperor seamount chain supposedly resulted from a recent major reorganization of the plate-mantl...

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Bibliographic Details
Other Authors: AADC (originator), AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider)
Format: Dataset
Language:unknown
Published: Australian Ocean Data Network
Subjects:
elevation
oceans
BATHYMETRY/SEAFLOOR TOPOGRAPHY
EARTH SCIENCE
Plates
AMD/AU
CEOS
AMD
OCEAN &gt
SOUTHERN OCEAN
GEOGRAPHIC REGION &gt
POLAR
Antarctic
Emperor Seamount Chain
Pacific
Southern Ocean
Tonga
West Antarctica
Antarc*
Antarctica
Online Access:https://researchdata.ands.org.au/australian-antarctic-southern-profiling-project/686077
https://data.aad.gov.au/metadata/records/ASAC_1119
https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=1119
http://www.sciencemag.org/content/318/5847/83.full
http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1119
Description
Summary:Values provided in temporal and spatial coverage are approximate only. Metadata record for data from ASAC Project 1119 See the link below for public details on this project. A marked bend in the Hawaiian-Emperor seamount chain supposedly resulted from a recent major reorganization of the plate-mantle system there 50 million years ago. Although alternative mantle-driven and plate-shifting hypotheses have been proposed, no contemporaneous circum-Pacific plate events have been identified. We report reconstructions for Australia and Antarctica that reveal a major plate reorganization between 50 and 53 million years ago. Revised Pacific Ocean sea-floor reconstructions suggest that subduction of the Pacific-Izanagi spreading ridge and subsequent Marianas/Tonga-Kermadec subduction initiation may have been the ultimate causes of these events. Thus, these plate reconstructions solve long-standing continental fit problems and improve constraints on the motion between East and West Antarctica and global plate circuit closure.

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