Otway Basin: Regional Seismic Horizon Maps for the Onshore Areas at the 1:500 000

Resource Abstract:

During the period 1991-94, a co-operative study of the early development of the Otway' Basin wasundertaken as part of a National Geoscience Mapping Accord project. The partners in the projectwere the Australian Geological Survey Organisation (AGSO), the Geological Survey of Victoria(GSV), the Department of Mines and Energy, South Australia (MESA), and the Victorian Instituteof Earth and Planetary Sciences (VIEPS) at Monash and La Trobe Universities. As part of theproject, four subsurface horizons were mapped across the onshore parts of the basin usingexploration industry and AGSO seismic data. MESA undertook mapping in the South Australiansector of the basin, GSV in the central (western Victorian) part of the basin, and AGSO and VIEPSin the eastern part of the basin. This is the first time such mapping has been published on a basinwidescale in the Otway Basin.This Record accompanies a folio of ten 1:500 000 scale maps compiled by AGSO from the dataprovided by NGMA partners from the western, central and eastern parts of the onshore basin. Fourof these maps are presented as two-way times (in milliseconds) to four mega-sequence boundariestogether with interpreted structural information. The four mega-sequence boundaries are: -1) - base Wangerrip Group,2) - top Eumeralla Formation,3) - top Crayfish Group,and 4) - top Palaeozoic basement.Time thickness (isochron) maps (in milliseconds two-way time) for the Crayfish Group, theEumeralla Formation and the Sherbrook Group, complete the horizon mapping. Also included aremaps of seismic line information and tectonic elements, and geophysical maps of gravity andmagnetic data. The maps are designed to improve the overall understanding of Otway Basinsubsurface geometry and tectonic evolution as a guide to possible hydrocarbon resources.

Citation

Title Otway Basin: Regional Seismic Horizon Maps for the Onshore Areas at the 1:500 000

publication  Date   1994

Series

Name Record

Issue 1994/051

cited responsible party - author

individual Name Finlayson, D.M.

cited responsible party - author

individual Name Hill, K.A.

cited responsible party - author

individual Name Cockshell, C.D.

cited responsible party - author

individual Name Finlayson, B.

cited responsible party - author

individual Name Pettifer, G.R.

cited responsible party - author

individual Name Perincek, D.

cited responsible party - author

individual Name Simons, B.

cited responsible party - author

individual Name Richardson, M.J.

cited responsible party - author

individual Name Lavin, C.J.

cited responsible party - publisher

organisation Name  Australian Geological Survey Organisation

Contact information

Address

, Canberra

Topic Category:  geoscientificInformation

Data quality information