Citation

Geoscience Australia provides most of its products for free under a Creative Commons Attribution 3.0 Australia Licence. We only require that you reference the use of our data or information using the following citation:
Collins, C.D.N., 1978. Crustal structure of the central Bowen Basin, Queensland. BMR Journal of Australian Geology and Geophysics  3:3:203-209. Bureau of Mineral Resources, Geology and Geophysics, Canberra.

Abstract

During May-June 1973, a deep crustal seismic refraction survey was undertaken in the Bowen Basin, Queensland. Blasts from open-cut coal mines in the Basin were used as sources of seismic energy, and recordings were made at twenty-two sites on a 375 km-long line along the axis of the Basin between Goonyella in the north and Moura in the south. A four-layer crust was interpreted from the seismic data, with P-wave velocities of 4.00 ± .22, 5.33 ± .08, 6.39 ± .07 and 7.07 ± .02 km/ s respectively. The total thickness of the 4.00 and 5.53 km/s layers is about 6 km under Goonyella, and slightly more under Dingo 130 km north of Moura. Earlier magnetic and gravity work indicates that these two layers thin southwards towards Moura. They comprise folded Permian-Triassic sediments and possibly also Early to Middle Palaeozoic rocks. The 6.39 km/s layer probably represents the igneous or granitised basement. A lower crustal layer with a velocity of 7.07 km/s and thickness ranging between 5 and 6 km has been interpreted. The total crustal thickness at the centre of the traverse is 36 km, and the upper mantle P-wave velocity is 8.10 ± .11 km/s. A southward-dipping Moho may be interpreted, with the crustal thickness increasing from 35 km, 30 km south of Peak Downs, to 37 km near Dingo. The gravity field calculated from the model conflicts with the observed gravity, suggesting a more complex model than that defined by the seismic refraction data alone.
Google map showing geographic bounding box with values North bound -21.0 East bound 151.0 West bound 146.5 South bound -26.0
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nonGeographicDataset - GA Publication - Journal

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license
Creative Commons Attribution 3.0 Australia Licence

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Commonwealth of Australia (Geoscience Australia)

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Date (publication)

1978

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nonGeographicDataset

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geoscientificInformation

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GA Publication
Journal
Earth Sciences

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English

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utf8

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unclassified

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North bound
-21.0
East bound
151.0
West bound
146.5
South bound
-26.0

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Unknown

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onLine

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pdf

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

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1.1

Metadata Date Stamp

2014-06-23

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unclassified

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Geoscience Australia
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Canberra
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2601
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Australia
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Downloads
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1800 800 173 (within Australia);
 
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