Quamby Bluff
| Quamby Bluff | |
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Quamby Bluff
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| Highest point | |
| Elevation | 1,227 m (4,026 ft) |
| Coordinates | 41°39′37″S 146°43′20″E / 41.66028°S 146.72222°E |
| Geography | |
| Location | Tasmania, Australia |
| Parent range | Great Western Tiers |
| Topo map | TASMAP 1:25,000 Quamby Bluff |
Quamby Bluff is a mountain in Northern Tasmania, Australia that is an outlying part of the Great Western Tiers mountain range. It is 19 km from Deloraine.
Quamby bluff lies 19 km from Deloraine by road, just north of the main escarpment of the Great Western Tiers mountain range. The name Quamby has been variously stated to be derived from Quarmby, the district in Huddersfield Yorkshire, or from a Viking word that means "mill farm", or from local aboriginal words meaning either a "place of rest" or a "good camping place".
The Tasmanian central plateau was uplifted from the lower Meander Valley, most probably in the Eocene epoch though possibly earlier, forming the escarpment of the Great Western Tiers. The face of the tiers has been eroded and retreated approximately 4 miles (6.4 km) since then, leaving Quamby Bluff as a solitary outlier. The bluff has similar geology to the rest of the range, and a similar form with cliffs, and talus (a mixture of scree and soil) slopes. Due to its prominence and isolation, views from the top cover a large portion of Northern Tasmania. In the right conditions Mount Strzelecki on Flinders Island, approximately 200 kilometres (120 mi) distant, can be seen from the peak. It's largely flat peak is 1,227 metres (4,026 ft) above sea level. The mountain's sandstone and mudstone base is of Triassic original and lies in near horizontal strata. Dolerite rocks formed during the Jurassic period intrude through this base. Erosion has formed the dolerite into steep cliffs and scree slopes which dominate the top of the mountain. The bluff has outcrops of Proterozoic era rocks that are the amongst the oldest found in Tasmania. These rocks are regarded as metamorphosed sediments containing a laminate of graphite, mica quartz-sericite and sericite schists.
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