Authors / CoAuthors
Brancolini, G. | Harris, P.
Abstract
The geophysical data collected includes a total of 1827 km of multi-channel seismic data and 562 km of Chirper sonar data. A total of 11 gravity cores, 28 piston cores, 18 surface grabs and 11 short trigger cores were collected on the voyage. Water profile (CTD) measurements and water samples were collected at nine stations and seabed bottom photographs were made at 11 stations. The expedition discovered and mapped a shelf sediment drift deposit covering about 400 km2 lying in an >800m deep section of the George Vth basin west of the Mertz Glacier. It is a true "drift" deposit, since these sediments exhibit a depositional architecture indicative of contour-parallel sediment transport. A significant observation is that the drift thins to the north into an acoustically-transparent veneer; this observation implies that the drift is sourced from the outer continental shelf, with sediment being transported landwards, across the shelf and into an 850m deep inner shelf basin.
Product Type
document
eCat Id
34374
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- GA PublicationRecord
- ( Theme )
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- geology
- ( Theme )
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- geophysics
- ( Theme )
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- marine
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- AQ
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_External
Publication Date
2000-01-01T00:00:00
Creation Date
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unknown
Topic Category
geoscientificInformation
Series Information
Record 2000/038
Lineage
Unknown
Parent Information
Extents
[-67.5, -64.0, 142.0, 146.0]
Reference System
Spatial Resolution
Service Information
Associations
Source Information
Source data not available.