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Location: 54 km NW from Dalby, Queensland, Australia
Smiths RoadBrigalowQueensland, Australia4412
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The Kogan Creek coal deposit forms the shallowest part of the Walloon Coal Measures which were deposited in the Surat Basin during mid-Jurassic times. The Upper Juandah Walloon Coal Measures were formed in freshwater swamps, lakes and low velocity streams. They comprise of medium to very fine sandstones, siltstones, mudstones, claystones and banded coal seams.The mining development is principally based on mining three (3) seams, namely the M, N and O seams in the Upper Juandah Coal Measures of the Walloons Subgroup. These seams vary in thickness and are separated by layers of silty mudstones and sandstones. The average combined seam thickness is 10 to 12m, with a maximum of 15.8 m in the mining area. The coal seams in the mine area have been informally named into major seams, in descending order K, M, N, O, R, S, T and U. The M, N and O seams correlate to the Upper Juandah Macalister and Nangram seams; whereas the R, S and T seams correlate to the Lower Juandah Wambo Seam. (RGS, 2017).The coal sits in relatively flat 0.1 metre to 3 metre thick seams with parting layers of rock and clay between each coal seam.
