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Sedimentary Rock Des
Term | Definition |
---|---|
Conglomerate | Type: Detrital Texture: Clastic Grain Size: Gravel, Coarse, >2mm Grain Shape: Rounded Depositional Environment: Alluvial fans, river beds |
Breccia | Type: Detrital Texture: Clastic Grain Size: Gravel, Coarse, >2mm Grain Shape: Angular Depositional Environment: Base of slopes |
Quartz Sandstone | Type: Detrital Texture: Clastic Grain Size: Sand, Medium, (1/16-2)mm Grain Shape: Sub-rounded to rounded Depositional Environment: Rivers, shorelines, lake shores, alluvial fans, deserts, tidal bars, tidal flats, deltas, shallow marine |
Oolitic Limestone | Type: Chemical precipitate Texture: Clastic Mineral Composition: Calcite Depositional Environment: coastline, tidal bars, shallow marine |
Jasper (red colored) | Type: Chemical precipitate Texture: Crystalline Mineral Composition: Fine-grained silica Depositional Environment: Abyssal plain |
Flint (dark colored) | Type: Chemical precipitate Texture: Crystalline Mineral Composition: Fine-grained silica Depositional Environment: Abyssal plain |
Chert (light colored) | Type: Chemical precipitate Texture: Crystalline Mineral Composition: Fine-grained silica Depositional Environment: Abyssal plain |
Dolomite | Type: Chemical precipitate Texture: Crystalline Mineral Composition: Dolomite Depositional Environment: Shallow marine, lagoons |
Gypsum | Type: Chemical precipitate Texture: Crystalline Mineral Composition: Gypsum Depositional Environment: Lagoons, deserts |
Chalk | Type: Chemical precipitate Texture: Clastic Mineral Composition: Calcite Depositional Environment: Deep marine |
Travertine | Type: Chemical precipitate Texture: Crystalline Mineral Composition: Calcite Depositional Environment: Caves, hot springs |
Rock Salt | Type: Chemical precipitate Texture: Crystalline Mineral Composition: Lagoons, deserts |
Fossiliferous Limestone | Type: Chemical precipitate Texture: Clastic Mineral Composition: Calcite Depositional Environment: coastline, tidal bars, shallow marine |
Micrite | Type: Chemical precipitate Texture: Crystalline Mineral Composition: Calcite Depositional Environment: deep marine |
Shale | Type: Detrital Texture: Clastic Grain Size: Clay, very fine, (<1/256)mm Grain Shape: angular to sub-angular to sub-rounded Depositional Environment: Lakes, swamps, coastline, tidal flats, lagoons, deltas, shallow marine, deep marine, abyssal plain |
Coquina | Type: Chemical precipitate Texture: Clastic Mineral Composition: Calcite Depositional Environment: Coastline |
Coal | Type: Organic Texture: Clastic Mineral Composition: Compressed organic matter Grain Shape: N/A Depositional Environment: Low oxygen swamps or bogs |
Siltstone | Type: Detrital Texture: Clastic Grain Size: Silt, Fine, (1/16-1/256)mm Grain Shape: Angular to sub-angular Depositional Environment: River floodplains, tidal flats, deltas |
Arkose | Type: Detrital Texture: Clastic Grain Size: Sand, Medium, (1/16-2)mm Grain Shape: Sub-angular to sub-rounded Depositional Environment: Alluvial fans, rivers near granite outcrops |