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Old 09-10-2020, 02:22 PM
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zenith (Tim)
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Join Date: Jun 2013
Location: Melbourne
Posts: 301
Anglesea - Great Ocean Road

Rocky outcrop at Point Roadknight.


Apparently a mix of Calcarenite and Eolianite, but I'm just quoting from a website:



https://www.geocaching.com/geocache/...4-14d2873b68d5


Calcarenite is a type of limestone that is composed predominantly, more than 50 percent, of detrital (transported) sand-size (0.0625 to 2 mm in diameter), carbonate grains. The grains consist of sand-size grains of either corals, shells, ooids, intraclasts, pellets, fragments of older limestones and dolomites, other carbonate grains, or some combination of these.

Eolianite or aeolianite is any rock formed by the lithification of sediment deposited by aeolian processes; that is, the wind. In common use, however, the term refers specifically to the most common form of eolianite: coastal limestone consisting of carbonate sediment of shallow marine biogenic origin, formed into coastal dunes by the wind, and subsequently lithified. It is also known as kurkar in the Middle East, miliolite in India and Arabia, and grès dunaire in the eastern Mediterranean. They are understood to have formed during the last one million years, and it is thought that the timing of deposition is related to sea level, but the nature of that relationship remains the subject of some debate.
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