GENERAL GEOLOGY

Detailed explanation-1: -Sedimentary rocks are created by accumulating existing rocks or fragments of extinct organisms on the Earth’s surface. Deep sediment burial causes sediment to get compressed and cemented, resulting in sedimentary rock.

Detailed explanation-2: -These rocks are often called clastic sedimentary rocks. One of the best-known clastic sedimentary rocks is sandstone. Sandstone is formed from layers of sandy sediment that is compacted and lithified. Chemical sedimentary rocks can be found in many places, from the ocean to deserts to caves.

Detailed explanation-3: -Some rocks form from rock particles. If the sand grains on a beach become naturally cemented together, they form a sedimentary rock called sandstone. Most sedimentary rock forms as sandstone does-from loose material that gets pressed together or cemented into rock.

Detailed explanation-4: -A clastic rock is a sedimentary rock that forms when rock fragments are (compacted) squeezed together and then cemented. Clastic rocks are grouped by the size of the rock fragments, or particles, of which they are made.

Detailed explanation-5: -Sedimentary rocks may contain particles of mud, sand or pebbles which are usually deposited on what was once the ocean floor. They may also contain the remains of living things such as plants and animals. Over many, many years these sediments accumulate layer by layer, forming thick bands.