What is a sedimentary texture?      The term texture refers to the pattern formed within a sedimentary rock by the constituting grains. This can best be studied under a microscope. Classification of sedimentary texture      In sedimentary rocks of  Mechanical origin , formed by weathering, erosion, transportation, deposition followed by diagenesis & Lithification, the framework grains are joined together, either by finer fragmental particles or by chemically precipitated cement. The former is called  matrix  and the latter, c ement . The pattern formed by framework grains, matrix and cement is called (a) Clastic texture . Sandstones show this kind of texture.      The texture of a rock of  Chemical origin  is produced wholly by chemically precipitated materials. No inter-granular space is to be found in such a rock. Limestones of orthochemical origin show this kind of (b) Non clastic texture .    ...

Guide to Geology What is Geology?      Geo  – Earth,  logy  – science, so geology can be simply defined as the science of Earth. From the center of the core to the exosphere (outermost layer of the atmosphere), anything and every that happens naturally can be studied under the subject called geology. It was also called  Rock Science , as most of the data source for the subject is from rocks. Subject covers (Branches) Origin of Earth (Dynamic Geology),  Process of formation and alteration of landforms (Geomorphology) Evolution of life (Palaeontology) Study of rocks (Petrology) Civil engineering construction (Engineering geology) Exploitation of minerals (Mining geology) Oil & Gas (Petroleum geology) Study of physical properties of earth (Geophysics) Earths chemical properties study (Geochemistry) and the list goes on., Key Concepts of Geology      We need to know about the types of rocks found in vast areas of the earth. With the...