Which type of rock is classified as either detrital chemical or organic?

Which type of rock is classified as either detrital chemical or organic?

Organic Sedimentary Rocks Plant bodies are lithified to become coal. When shells are cemented together they make a type of limestone. So limestone can be considered chemical or organic.

What is an example of a detrital chemical and organic sedimentary rock?

Coal is an example of organic sedimentary rock. Chemical sedimentary rocks are formed when dissolved minerals come out of water as mineral constituents in solution become supersaturated and inorganically precipitate. Gypsum, evaporites and chert are examples of the same.

What type of rock has detrital rocks?

Detrital sedimentary rocks
Detrital sedimentary rocks, also called clastic sedimentary rocks, are composed of rock fragments that have been weathered from pre-existing rocks.

What type of rock is organic rock?

Organic-rich sedimentary rocks are a specific type of sedimentary rock that contains significant amounts (>3%) of organic carbon. The most common types include coal, lignite, oil shale, or black shale.

What are detrital rocks?

DETRITAL SEDIMENTARY ROCKS – rocks that form from transported solid material. Detritus – Latin for “worn down.” Solid rock fragments in sediment are defined by size of the fragments: largest to smallest: BOULDERS, COBBLES, PEBBLES, SAND, SILT, and CLAY.

Is quartz sandstone detrital or chemical?

Detrital, or clastic – detritus, or fragments, of other rocks (e.g., sandstone); the most important constituents are quartz, calcite, clay minerals (from the weathering of feldspars), rock fragments, and feldspars.

What is a chemical rock?

A sedimentary rock composed primarily of material formed directly by precipitation from solution or colloidal suspension (such as by evaporation) or by the deposition of insoluble precipitates (such as by mixing solutions of two soluble salts); e.g., gypsum, rock salt, chert, or tufa.

Is limestone a detrital or chemical?

Limestone is a ‘chemical sedimentary rock’ composed primarily of calcite (CaCO3) precipitated from water. It may form inorganically by precipitation of calcite from saturated water, biochemically in the formation of animal hard-parts, or as a combination of the two processes.

Is marble an intrusive or extrusive rock?

Marble. When limestone, a sedimentary rock, gets buried deep in the earth for millions of years, the heat and pressure can change it into a metamorphic rock called marble.