Carbonate rocks are a class of sedimentary rocks composed primarily of carbonate minerals. The two major types are limestone, which is composed of calcite or aragonite (different crystal forms of CaCO 3), and dolomite rock (also known as dolostone), which …

Carbonate rocks are sedimentary rocks consisting of carbonate minerals. The most common carbonates in these rocks are the polymorphs of calcium carbonate CaCO 3, calcite and aragonite, and calcium magnesium carbonate CaMg (CO 3) 2, dolomite.

2024年12月20日 · Limestones and dolostones (dolomites) make up the bulk of the nonterrigenous sedimentary rocks. Limestones are for the most part primary carbonate rocks. They consist of 50 percent or more calcite and aragonite (both CaCO 3).

The large, clear crystals are relatively easy to distinguish from the other carbonate components. Spar in carbonates is analogous to cement in siliciclastic sedimentary rocks.

Explain the chemical reactions responsible for carbonate precipitation and how the amount of carbon dioxide in water influences carbonate precipitation. Explain how dolomite forms. Identify the main components of carbonate rocks and name the …

2000年10月26日 · The table below shows the major categories of carbonate rocks based on their allochems and interstitial material. But what happens if there is more than one allochem in the rock, or there is a mixture of micrite and spar?

2024年12月20日 · Carbonate rocks commonly grade naturally into siliciclastic sedimentary rocks as the proportion of terrigenous grains of varying size and mineralogy increases.

carbonate rock, any rock composed mainly of carbonate minerals. The principal members of the group are the sedimentary rocks dolomite and limestone ( qq.v. ).

Carbonate sedimentary rocks (Frontispiece) are limes tones and dolostones composed of the minerals calcite (CaCO 3) and dolomite (CaMg (CO 3) 2). They comprise roughly 20% of the surface sedimentary rocks on the planet with the oldest being ~3.5 Ga, almost as …

2) Carbonate sedimentary rocks form when organic activity or inorganic precipitation extracts carbonate from seawater to form a sediment composed of calcium carbonate or calcium-magnesium carbonate. Common examples: Limestone, dolostone