The Georgina Basin is a large (c. 330,000 km²) intracratonic

sedimentary basin Sedimentary basins are region-scale depressions of the Earth's crust where subsidence has occurred and a thick sequence of sediments have accumulated to form a large three-dimensional body of sedimentary rock. They form when long-term subsiden ...

in central and northern

Australia Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by ...

, lying mostly within the

Northern Territory The Northern Territory (commonly abbreviated as NT; formally the Northern Territory of Australia) is an Australian territory in the central and central northern regions of Australia. The Northern Territory shares its borders with Western Aust ...

and partly within

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , establishe ...

.Smith, KG (1972). "Stratigraphy of the Georgina Basin." Bureau of Mineral Resources, Australia, Bulletin 111. It is named after the Georgina River which drains part of the basin. Deposition of locally up to c. 4 km of marine and non-marine

sedimentary rock Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles ...

s took place from the

Neoproterozoic The Neoproterozoic Era is the unit of geologic time from 1 billion to 538.8 million years ago. It is the last era of the Precambrian Supereon and the Proterozoic Eon; it is subdivided into the Tonian, Cryogenian, and Ediacaran periods. It is prec ...

to the late

Paleozoic The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ...

(c. 850-350 Ma). Along with other nearby sedimentary basins of similar age ( Amadeus Basin, Officer Basin), the Georgina Basin is believed to have once been part of the hypothetical Centralian Superbasin, that was fragmented during episodes of tectonic activity.

References

External links

Georgina Basin page at Northern Territory Geological Survey
*http://www.nt.gov.au/d/Minerals_Energy/Geoscience/Content/File/Pubs/Record/NTGSRec2002-004.zip Georgina Basin SEEBASE Project report (April - May 2002) at Northern Territory Geological Survey (zip) Sedimentary basins of Australia Geology of the Northern Territory Geology of Queensland Proterozoic geology Paleozoic geology North West Queensland Cambrian paleontological sites Paleozoic paleontological sites of Australia {{Australia-geology-stub

See also

References

External links