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Location: 39 km N from Gunnedah, New South Wales, Australia
PO Box 600GunnedahNew South Wales, Australia2380
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The Tarrawonga Coal Mine is located in the Gunnedah Basin, in the Gunnedah Coalfield, which contains sedimentary rocks, including coal measures, of Permian and Triassic age. Regionally, there are two coal-bearing sequences in the Gunnedah Basin, namely:- Early Permian Bellata Group (comprising the Maules Creek sub-basin and Mullaley subbasin, separated by the Boggabri Ridge);- Late Permian Black Jack Group.The Tarrawonga coal resource is located within the Maules Creek sub-basin of the Early Permian Bellata Group. The target coal seams within the Maules Creek sub-basin are contained within the Maules Creek Formation. They subcrop on low hills to the west of theTarrawonga area and dip towards the east.Target coal seams within the open cut extent are Braymont, Bollol, Creek, Jeralong, Jeralong Lower, Merriown, Merriown Lower, Velyama, Nagero.Individual coal seams range up to approximately 4.5 m thick, and average 1.5 m. They onlap the Boggabri Ridge to the west of the Tarrawonga area and thicken towards the east.
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