What is the classification of carbonate?

The classification divides carbonates into two groups. Allochemical rocks are those that contain grains brought in from elsewhere (i.e. similar to detrital grains in clastic rocks). Orthochemical rocks are those in which the carbonate crystallized in place.

What is the classification of limestone?

Limestone is a sedimentary stone with 50% by weight calcite or calcium carbonate (CaCO3) content. Limestone is a “clastic” sedimentary stone. …

What is the classification of shale?

Shales characteristically contain fine-grained silt and clay particles (< 0.063mm). They are therefore classified as silty shale or clay shale, depending on whether silts or clays dominate in the constituents of the rock. Silty shale and clay shale may collectively be called argillaceous shales.

What is the difference between Micrite and sparite?

If one compares the two classifications, a Rock rich in carbonate mud is termed a micrite by Folk and a mudstone or wackestone by Dunham. Moreover, a Rock containing little matrix is termed a sparite by Folk and a grainstone or packstone by Dunham.

What are the classification of sedimentary rocks?

For the purposes of the present discussion, three major categories of sedimentary rocks are recognized: (1) terrigenous clastic sedimentary rocks, (2) carbonates (limestone and dolomite), and (3) noncarbonate chemical sedimentary rocks.

How many carbonates are there?

There are approximately 80 known carbonate minerals, but most of them are rare.

What is the classification of chert?

Chert is a fine-grained sedimentary rock composed of quartz (SiO2) that is microcrystalline or cryptocrystalline quartz. It is usually organic rock but also occur inorganically as a chemical precipitate or a diagenetic replacement. It occurs as nodules, concretionary masses, and as layered deposits.

What are the 3 classifications of sedimentary rocks?

There are three different types of sedimentary rocks: clastic, organic (biological), and chemical. Clastic sedimentary rocks, like sandstone, form from clasts, or pieces of other rock.

How is sedimentary rock classified?

Sedimentary rock is classified into two main categories: clastic and chemical. Clastic or detrital sedimentary rocks are made from pieces of bedrock, sediment, derived primarily by mechanical weathering. Clastic rocks may also include chemically weathered sediment.

How can you differentiate halides from carbonates?

Particularly carbonates can be identified using dilute acids and limewater. Halides can be identified using silver nitrate and dilute nitric acid. Sulfates can be identified using barium chloride and hydrochloric acid.

How do you identify Micrites?

Micrite is “lime mud”, the dense, dull‐looking sediment made of Clay sized crystals of CaCO3. Micrite forms from the breakdown of calcareous algae skeletons. It is not clear if all ancient Micrites formed in the same way. Many Carbonates are composed of nearly 100% Micrite.

What are the different types of sediments?

There are three types of sediment, and therefore, sedimentary rocks: clastic, biogenic, and chemical, and we differentiate the three based on the fragments that come together to form them.