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Illawarra Coal Measures : ウィキペディア英語版 | Illawarra Coal Measures
The Illawarra Coal Measures is a group of sedimentary rocks occurring in the Sydney Basin in eastern Australia. This strata is up to 150 metres thick. Formed in the late Permian, it comprises shale, quartz-lithic sandstone, conglomerate rocks, chert, with sporadically carbonaceous mudstone, coal and seams of torbanite. Coal mining of these measures remains of a significant commercial enterprise to the present day. One of the abandoned coal mines in the Blue Mountains is now a tourist attraction. ==See also==
* Sydney Basin * Hawkesbury sandstone * Mittagong Formation * Ashfield Shale * Narrabeen group
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