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Goat Paddock Crater, Mount Amhurst Station, Halls Creek Shire, Western Australia, Australiai
| Regional Level Types | |
|---|---|
| Goat Paddock Crater | Crater |
| Mount Amhurst Station | Mountain |
| Halls Creek Shire | Shire |
| Western Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
18° 20' 30'' South , 126° 40' 34'' East
Latitude & Longitude (decimal):
Type:
KÃķppen climate type:
The Goat Paddock Crater is 106 kilometres west south-west of Halls Creek, and 40 kilometres west of the Mount Amhurst pastoral station homestead. It is near the junction of the ODonnell and Margaret Rivers.
It was first recognised by a Geological Society of Western Australia regional mapping exercise in 1964. It was not until 1979, that an expedition was able to reach the crater in this remote area, and confirm it to be a meteorite impact crater. It was further studied across 2003-2004. The resultant information published in 2005, goes into more detail than space here allows.
The rim is 5.8 kilometres east-west, and 6.3 kilometres north-south, the depth 100-150 metres, steep cliffs with a flat crater floor and no central uplift area.
Breccia containing melted rocks, silica glass, shatter cones, and shocked quartz were provided as evidence to its origins. The crater is filled with 200 metres of ancient lake sediments from the early Eocene period.
The crater is bounded by steep cliffs 100-150 metres high, of silicified Proterozoic Pentecost Sandstone of the Kimberley Group, and overlying Hilfordy Formation of the Crowhurst Group, and sandstone, siltstone and carbonate of the Egan and Yurabi Formation of the late Neoproterozoic Louisa Downs Group. The crater walls are dissected by roughly radial gorges, and is one of the few places in the world, crater walls can be seen in cross-section.
There is a horizontal bench half-way up the wall, where suevite was found, with ropey flow textures, with microblasts of quartz with planar deformation features, planar fractures, and silica glass.
The flat crater floor is partially filled with lake sediments, represented by bedded conglomerate close to the crater wall, grading inward to sand, silt and mudstone. The sources state the crater fills a position between a simple and complex classification.
List of minerals for each chemical element
Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Goat_Paddock_crater |
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Other Regions, Features and Areas containing this locality
Australia
- North Australian ElementCraton
- Northern Territory
- Kalkarindji Igneous ProvinceGeologic Province
- Western Australia
- King Leopold OrogenOrogen
- Hooper ProvinceGeologic Province
- King Leopold OrogenOrogen
Australian PlateTectonic Plate
- North Australian Craton
- Kimberley CratonShield
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References
Harms, J. E., Milton, D. J., Ferguson, John, Gilbert, D. J., Harris, W. K., Goleby, Bruce (1980) Goat Paddock cryptoexplosion crater, Western Australia. Nature, 286 (5774). 704-706 doi:10.1038/286704a0
Goat Paddock Crater, Mount Amhurst Station, Halls Creek Shire, Western Australia, Australia