Fossiliferous Limestone
It forms from the accumulation of shells and skeleton remains of calcareous marine organisms and is an indicator for a warm, shallow marine deposition environment.
Size: 25 cm
Chalk
Consolidated accumulation of minute calcite plates (coccoliths) shed from micro-organisms called coccolithophores.
Size: 10 cm
Coquina
Incompletely consolidated rock composed dominantly of seashells and corals, forms in close association with coral reefs.
Size: 10 cm
Chert
Cryptocrystalline form of silica formed by the decay of silica-rich organisms such as radiolarian
Size: 15 cm
Diatoms, Diatomite & Diatom Chert
Consists of fossilized remains of diatoms, a hard shelled phytoplankton
Size: 9 cm (Diatom Chert)
Peat – Accumulation and cementation of plant remains
Low energy and smoky when burned
Size: 12 cm
Lignite - Soft, brown coal-like material
Moderate energy when burned
Size: 10 cm
Bituminous Coal – Carbonized plant remains
soft, black high energy coal used in power generation
Size: 10 cm
Anthracite – Hard, black coal
High energy coal, used in industry
Size: 15 cm |