Chemical & Organic Sedimentary Rocks (Names based primarily on composition) Basic Rock Name Limestone Dolostone Chert Rock Salt Rock Gypsum Peat or Coal.

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Presentation transcript:

Chemical & Organic Sedimentary Rocks (Names based primarily on composition) Basic Rock Name Limestone Dolostone Chert Rock Salt Rock Gypsum Peat or Coal Composition Calcite Dolomite Quartz (silica) Halite Gypsum “Carbon” / Plant Remains

Limestone Crystalline Limestone Chalk Fossiliferous Limestone

Formation of Limestone Calcite Precipitates in Warm Water Water Under Low Pressure (Shallow) Or It is secreted by biological organisms Clams, Mussels, Scallops, etc. Corals Foraminifera

Limestone Represents: Shallow Tropical Ocean

Chalk (Coccolithophores)

Black Sea

Oolitic Limestone

Travertine (Limestone)

Dolostone

Chert (Flint, Jasper, Agate…)

Diatom Skeletons

Chert Represents Deep Ocean

Evaporites: Bonneville Salt Flats, Utah Rock Gypsum Rock Salt

Mediterranean Geology Isolated, Arid, Salty Sea/Lake

Peat and Coal Swamp, Bog

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