| 词条 | Mittagong Formation |
| 释义 |
The Mittagong Formation is a sedimentary rock unit in the Sydney Basin in eastern Australia.[1] FormationLaid down in the Triassic Period, it may be seen as an interval of interbedded fine-grained sandstone and shale between the Ashfield Shale (above) and the Hawkesbury sandstone (below). The maximum thickness around Sydney may be ten metres.[2] Near Town Hall railway station, the formation is 8 metres thick. In the type area at Mittagong it is 15 metres thick. WhereaboutsIn northern Sydney it can be seen in several areas, such as West Pymble[3] and Mount Ku-ring-gai.[4] This rock formation is associated with the critically endangered Sydney Turpentine-Ironbark Forest.[5] See also
References1. ^{{cite web |title=Australian Museum - The Sydney Basin|url=http://australianmuseum.net.au/The-Sydney-Basin}} {{Australia-geology-stub}}2. ^{{cite web |title=Geoscience Australia|url=http://dbforms.ga.gov.au/pls/www/geodx.strat_units.sch_full?wher=stratno=27489}} 3. ^Field Geology of New South Wales, Sydney Basin page 102 4. ^Chris Herbert. Geology of the Sydney 1:100,000 Sheet 9130 5. ^{{cite web |title=Sydney Turpentine-Ironbark Forest|url=http://www.environment.gov.au/cgi-bin/sprat/public/publicshowcommunity.pl?id=38}} 5 : Geologic formations of Australia|Triassic Australia|Sandstone formations|Shale formations|Geology of New South Wales |
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