Palaeoenvironment of the Darlington Limestone (Early Permian)Tasmania
Brill, KG (Jnr.) (1982) Palaeoenvironment of the Darlington Limestone (Early Permian)Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 116 . pp. 67-84. ISSN 0080-4703
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The Early Permian Darlington Limestone in the Tasmania Basin consists of fossiliferous
mudstone, siltstone and impure limestone. It was deposited in a somewhat restricted basin
with uplands on the northeast and east, the northwest, and probably the southwest.
Icebergs from glaciers on the uplands or sea-ice may have transported erratic lonestones
into the basin. Cold, low salinity water is indicated by a foramol fauna which contained
many individuals but relatively tew genera and which is rich in foraminifera,
bryozoans, spiriferids, and pelecypods.
Hydraulic energy was generally low. Little sorting and few sedimentary structures
were observed. Evidence of current action is mainly on the periphery of the basin and
suggests currents from the southwest. Such evidence is mostly the orientation of fossils.
Islands such as the Beaconsfield-Frankford island, and shallows probably impeded current
action in the basin.
|Additional Information:||Copyright Royal Society of Tasmania|
|Keywords:||Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library|
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|Deposited On:||25 May 2012 14:26|
|Last Modified:||27 Aug 2013 12:37|
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