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- Coquina - Wikipedia
Coquina is composed mainly of the mineral calcite, often including some phosphate, in the form of seashells or coral Coquinas dating from the Devonian period through to the much more recent Pleistocene epoch are a common find all over the world, with the depositional requirements to form a coquina being a common thing in many marine facies
- Coquina - The Rock that Saved St Augustine - Castillo de San Marcos . . .
This material "glued" the shell fragments together into a porous type of limestone we now call coquina, which is Spanish for "tiny shell" Although found in very few places in the world, conditions were just right for coquina formation along the east coast of Florida
- Coquina: Limestone composed almost entirely of fossil debris
Coquina is an extremely porous limestone composed almost entirely of sand-sized shell fragments (usually mollusks or gastropods) that have been transported by waves and currents
- What are coquina and tabby? - NOAAs National Ocean Service
Coquina is a rare form of limestone composed of the shell fragments of ancient mollusks and other marine invertebrates, which, over time, are glued together by dissolved calcium carbonate in the shells
- Coquina | Sedimentary Rock, Shells Fossils | Britannica
Coquina, limestone formed almost entirely of sorted and cemented fossil debris, most commonly coarse shells and shell fragments Microcoquinas are similar sedimentary rocks that are composed of finer material
- Geology of the Coquina Rocks - Florida State Parks
Coquina rock is a type of sedimentary rock (specifically limestone), formed by the deposition and subsequent cementation of mineral or organic particles on the floor of oceans or other bodies of water at the Earth's surface
- Coquina: Identification, Pictures Info for Rockhounds
Coquina is a clastic sedimentary rock made almost entirely out of large (2 mm or larger) shell fragments The shell fragments are cemented together by calcite, and it is technically a variety of limestone Coquina forms almost exclusively in high-energy marine environments like beaches and tidal channels
- What Is Coquina? Its Formation, Composition, and Uses
Coquina is a sedimentary rock composed almost entirely of fossil debris, primarily fragments of mollusk shells, gastropods, and other marine invertebrates These fragments are largely made of calcium carbonate, which classifies coquina as a variety of limestone
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