Citation

Exon, N.F., Lee, C.S. & Hill, P.J., 1989. Rig Seismic Geophysical and Geological Research Cruise off Western and Southeastern Tasmania. Record  1989/012. Bureau of Mineral Resources, Geology and Geophysics, Canberra.

Abstract

R/V Rig Seismic carried out Bureau of Mineral Resources (BMR) research cruise 78 on the Tasmanian margin from 24 March to 18 April, 1988. The first half of the cruise was devoted to multichannel seismic surveying - 1750 km on the west Tasmanian margin and 265 km off southeast Tasmania. The west Tasmanian seismic survey examined the King Island and Strahan Sub-basins of the Sorell Basin, tested the structure of the continental margin from the continental shelf to undoubted oceaniccrust, and provided a key seismic tie through the thick sedimentary basin on the west Tasmanian continental slope. The southeast Tasmanian seismic survey examined the Palaeozoic sequences near Bruny Island on which oil seeps are known. The latter half of the cruise was devoted to geological sampling on the west Tasmanian margin. Twelve stations were designed to sample basement and older outcropping sequences (Mesozoic and Palaeogene) to provide control for seismic interpretation. Younger sequences were cored at 37 stations in order firstly, to establish amodel for Cainozoic sedimentation, and secondly, to allow the analysis of surface sediments to define areas of anomalous concentrations of thermogenic gas. Near-surface thermal gradient and thermal conductivity were measured at 10 stations as a means of establishing thermal flux. The work will enable us to better define the geology of the basins, and especially their history of rifting, their stratigraphy, and their petroleum potential.
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Product Type/Sub Type

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license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1989

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

Keywords

GA Publication
Record
geophysics
geology
marine survey
Earth Sciences

Resource Language

English

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utf8

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unclassified

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pdf

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Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
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Metadata File Identifier

a05f7892-75a5-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

1999-08-10

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

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Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
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fax:
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phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays