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RICHFIELD
PROJECT - EPC930 LOCATION AND
TENEMENT PLAN |
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GEOLOGY AND COAL SEAMS EPC 930 is structurally located on the south-western margin of the Nebo Synclinorium overlapping onto the Folded Zone of the Taroom Trough within the Permo-Triassic Bowen Basin. . In this area the Permian stratigraphy begins with the German Creek Formation (sandstones, siltstones, mudstones) at the base followed by the Fort Cooper Coal Measures, the Rangal Coal Measures and the Blackwater Group (sediments and some coal) at the top. The Rangal Coal Measures outcrop to the southwest of the EPC boundary and are thought to occur at depths of 200-500m within the southwest portion of the EPC. They dip gently to the east before being dragged up along the footwall of the NNW trending Foxleigh Fault. In the east of the EPC, Cenozoic cover rocks obscure both outcrop and structure of the eastern margin of the Bowen Basin, but coal bearing formations do occur beneath this cover. Indications (from seismic surveys and extrapolations from data points outside the EPC) in this area are that coal seams in the Fort Cooper Coal Measures are likely to be thin and of poor quality with high ash content but those in the underlying German Creek Formation may be of higher quality and a more suitable exploration target. The main geological target within EPC 930 is the Rangal Coal Measures
which are believed to contain equivalents of two potentially commercial
coal seams - the 3-6 metres thick Leichardt Seam and the 2-3 metres thick
Vermont Upper Seam. The coal seams of the Rangal Coal Measures have sustained
mining operations for several decades in many locations northwest and
southwest of EPC 930 where they occur at shallower depths and have quite
modest dips, which has been ideal for the development of large scale open-cut
mines. The high quality of the coal typically allows for the production
of an export quality hard coking coal as well as a thermal coal by-product
in many instances. Seismic
investigations within the western portion of the EPC area have indicated
the presence of coal at depths of 200 metres or more. |
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