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Some important sedimentary rocks

Shale; an example of sedimentary rock

Some important sedimentary rocks are as under; (1). Conglomerate Nature: Consolidated gravels. Colour variable. Mineral Composition: Rounded pebbles are set in a fine-grained matrix. The matrix commonly consists of sand and silt and it is cemented by silica, calcium carbonate, or iron oxide. The individual pebbles may be entirely composed of quartz or maybe rock …

Classification of the Sediments

Classification of the sediments (that form the sedimentary rocks) is made on the basis of the sources of the sediments. Some of the rocks are formed from the sediments obtained from pre-existing rocks, while some are formed from the sediments sourced from the minerals precipitated from water. On the basis of the above mentioned two …

Types and classification of Rocks

On theĀ  basis of their origin, characteristics, and information, the rocks are classified into following three types: Igneous Rocks Sedimentary (Aqeous) Rocks Metamorphic Rocks (A). IGNEOUS ROCKS: The term igneous is based on the Latin word ignis meaning fire. Thus it denotes those rocks which originated through fire. Technically speaking, these rocks were formed as …