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Tag «metamorphic rocks»

Introduction to rocks

Rocks: A major part of the earth’s crust is composed of rocks. Rocks may be defined as an aggregate of minerals. Some rocks, such as quartzite (quartz) and marble (calcite), contain grains of one mineral only, but most are composed of a variety of different minerals, The rocks are broadly classified into three groups: (i) …

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 …