Distribution of igneous facies and potential-field modelling of the Mentelle Basin, southwestern margin, Australia

Stephen Johnston; Ron Hackney; Chris Nicholson

doi:10.1081/22020586.2010.12041965

ISSN: 2202-0586
E-ISSN:

oa Distribution of igneous facies and potential-field modelling of the Mentelle Basin, southwestern margin, Australia
Authors Stephen Johnston^a, Ron Hackney^b and Chris Nicholson^c
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^a Geoscience Australia, GPO Box 378 Canberra ACT 2601, [email protected] ^b Geoscience Australia, GPO Box 378 Canberra ACT 2601, [email protected] ^c Geoscience Australia, GPO Box 378 Canberra ACT 2601, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2010, Issue ASEG2010 - 21st Geophysical Conference, Dec 2010, p. 1 - 4
DOI: https://doi.org/10.1081/22020586.2010.12041965
- Published online: 01 Dec 2010

Abstract

Summary

Seismic interpretation of the Mentelle Basin, coupled with 2.5D gravity modelling has provided information on the distribution of volcanic material throughout the basin and the large-scale structure of the basin. The gravity models suggest the presence of thinned continental crust in the central parts of the western Mentelle Basin. Maps showing the distribution and thickness of various igneous facies were used to establish a spatial correlation between the distribution of volcanic material and crustal thickness. Analogue models indicate that volcanism during continental rifting phases is confined to the centre of the extensional zone; therefore the mantle high and corresponding volcanic deposits observed in the Mentelle Basin could be the result of a failed rift event.

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2010-12-01

2026-01-23

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References

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/content/journals/10.1081/22020586.2010.12041965

Article Type: Research Article

Keyword(s): gravity; Mentelle Basin; seismic reflection; volcanism

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oa Distribution of igneous facies and potential-field modelling of the Mentelle Basin, southwestern margin, Australia

Abstract

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