The park includes several areas from the ancient Etruscan city of Populonia, the necropolis of San Cerbone, Casone and the grotto, and the cave of calcarenite.
22.
A white sedimentary rock known as calcarenite is locally important within the marine park as it makes up the central and northern regions of the island to below sea level in several places.
23.
Carbonate reservoirs are largely related to two Upper Cretaceous and two Paleocene cycles of sedimentation in a syn-rift fill sequence; however, there is minor Mid-Cretaceous calcarenite production.
24.
The term calcarenite was originally proposed in 1903 by Grabau as a part of his calcilutite, calcarenite and calcirudite carbonate classification system based upon the size of the detrital grains composing a limestone.
25.
The term calcarenite was originally proposed in 1903 by Grabau as a part of his calcilutite, calcarenite and calcirudite carbonate classification system based upon the size of the detrital grains composing a limestone.
26.
The intertidal platforms have the highest invertebrate diversity of any calcarenite reef in Victoria, while subtidal areas are characterised by diverse and abundant algal communities as well as by encrusting organisms such as ascidians, sponges and bryozoans.
27.
Geologically, the constituent parts of the Topgallant Islands are the remnants of a stack of calcarenite strata sitting on a now-submerged ridge of granite which is now submerged and which has been extensively eroded by wave action since the commencement of sea level rise.
28.
The U-shaped ridge is visible as an encircling wall of steep cliffs and talus slopes over which the calcarenite platform starts as a talus slope of fractured rock and scree or as low cliffs and overhangs thickens into a thick layer of soil covering most of the island.
29.
The island's geological structure consists of an upper platform of calcarenite laying over on a U-shaped ridge of pink granite, dark coloured porphyritic granite gneiss with intrusions by large, dark dolerite dykes . The open end of the U aligns with the island's northern coast.
30.
The plant in Contrada Foggia covers an area of 2, 500 square metres ( with about 350 metres already excavated ); they have discovered three furnaces, two manufacturing environments and 5 brickwork structures bounding the production plants, made with local calcarenite, detrital stone which is solid and soft while it is processed.
