Citation

Lavering, I.H., 1992. Quaternary Evolution, Modern Geological Processes and Potential Effects of Additional Petroleum Exploration Activity on the Van Diemen Rise, Timor Sea (East Malita Graben Area) : Release 1 of 1992. Record  1992/030. Bureau of Mineral Resources, Geology and Geophysics, Canberra.

Abstract

To meet the formal requirements for the collection, interpretation and analysis ofenvironmental baseline data in Australia's offshore areas in which further petroleumexploration could take place, the modern geological processes, Quaternary evolutionand environmental features of the potential release area(s) in the Van Diemen Rise(East Malita Graben, Timor Sea) which will be included in the first release of 1992are described, analysed and interpreted. The potential release area(s) overlie part of the Van Diemen Rise in the eastern partof the Timor Sea in the vicinity of Cootamundra and Evans Shoals. Sea bottomsediments in the region are dominantly calcareous sand grade and derived from thebreakdown of skeletal material which has developed on an extensive number ofbanks and shoals which characterise this part of the continental shelf. The sea bottom is also marked by a number of sinuous and narrow curvilinearchannel like features which along with other geomorphic elements are attributed tothe effects of subaerial exposure and weathering of the carbonate shelf sedimentwedge during Quaternary lower sea level stages, as well as marine and coastalprocesses which occurred during sea level rise and marine inundation. The Holocene rise in sea level has resulted in inundation of a large number of wave-cut scarps, channels and flat top banks, the latter of which became the focus ofcarbonate reef growth and hence a source of much of the sand-grade carbonatesediments evident on the sea floor.
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Product Type/Sub Type

nonGeographicDataset - GA Publication - Record

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1992

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

Keywords

GA Publication
Record
petroleum exploration
geology
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Lineage

Legacy product, lineage not available

Digital Transfer Options

onLine

DISTRIBUTION Format

pdf

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7892-74db-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

1996-10-30

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

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