0 used to refer to a type of rock consisting of very small pieces of animals and plants --
1 describes a type of rock consisting of very small pieces of animals and plants --
After the initial deposition of bioclastic rudist-bearing limestones and the formation of some reef complexes composed of rudists and single corals, the sea level started dropping.
Bioclastic phosphates can also be cemented by phosphate minerals.
Locally there are interbedded thinly bedded lenticular bioclastic limestone and dolomitic beds which are 0.15m thick with siltstone, sandstone and rare tuff beds.
The formation also contains thin layers of calcareous sandstone, bioclastic, argillaceous and silty limestone, as well as calcareous sandstone.
The presence of centimetre-thick bioclastic graded levels with quartz silt (tempestites) indicates the existence of density flows induced by storms.
This facies consists of tabular beds (up to 0.5 m thick), with occasional planar cross-bedding and frequent centimetre-thick bioclastic tempestites (mainly formed by lituolids).
The intercalated marls are thinner and contain similar coarse bioclastic material.
