Coquina

Classification：Sedimentary Rock

A clastic limestone composed of shells and shells. The particle size is more than 2mm. Fine carbonate rocks composed of fossil clasts belong to clastic rocks.

Coquina is a limestone which is consolidated by biotic shells, which are consolidated by argillaceous calcite. According to the different species can be divided into Coquina, Coquina molluscs, brachiopods etc.. It can also be directly named according to biological species, such as foraminifera limestone, spindle insect limestone and so on. The creatures in this type of rock generally have the characteristics of being buried in situ.
Features and other editors
Coquina is a limestone containing fossils, mostly composed of fossil fragments, cemented by calcium containing earth.
Coquina is a class of limestone. Limestone contains 3 main types (usually biogenic) Coquina, Oolitic Limestone and Cretaceous limestone. Oolitic Limestone is composed of small spherical calcite particles (including fossils and shellfish), and Cretaceous limestone is formed by the accumulation of skeletal or residual shells of small organisms.