Collie Sub-basin

The Collie Sub-basin is a pocket of Permian sedimentary rocks with an area of 225 km², enclosed within much older Archean rocks of the Yilgarn Craton, near the town of Collie in southwestern Western Australia.^[1],^[2] Once considered a unique basin, this area, along with the smaller Wilga and Boyup Sub-basins to the south, are now classified as outliers of the Perth Basin, separated from the main area by ancient earth movements and erosion. The Collie Sub-basin contains significant coal reserves, currently being mined mainly for electricity generation.^[3]

References

1. ^ Wilde S.A., Walker I.W. 1982. Collie, Western Australia, sheet SI50-6, 1:250 000 Geological Map Series, Explanatory Notes. Geological Survey of Western Australia.
2. ^ Wilson A.C. 1992. Collie Basin. In: Geology and Mineral Resources of Western Australia: Western Australia Geological Survey, Memoir 3, 525-531.
3. ^ Le Blanc Smith G. 1993. Geology and Permian coal resources of the Collie Basin, Western Australia. Western Australia Geological Survey, Report 38.

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