sedimentary rocks calcareous

  • Limestone - Sedimentary rocks

    Limestone is a very common sedimentary rock consisting of calcium carbonate (more than 50%). It is the most common non-siliciclastic (sandstone and shale are common siliciclastic rocks) sedimentary rock. Limestones are rocks that are composed of mostly calcium carbonate (minerals calcite or aragonite).

  • Carbonate Sedimentary Rock Classification

    Limestones are not single composition rocks but a group of related rocks all composed of CaCO3 and reacting with dilute HCl acid. Limestone [CaCO3] is also chemically related to dolomite [CaMg(CO3)2]. Because all these rocks have CO3- - in common they are called the carbonates.

  • Calcareous - Wikipedia