GEOLOGY

Detailed explanation-1: -The broken pieces of rocks are carried away by wind, glaciers and rivers. This process is called as erosion. The eroded material is finally deposited as pebbles, sand or mud. Therefore, the sequence of processes is: weathering, erosion, deposition.

Detailed explanation-2: -Sedimentary rocks are the product of 1) weathering of preexisting rocks, 2) transport of the weathering products, 3) deposition of the material, followed by 4) compaction, and 5) cementation of the sediment to form a rock. The latter two steps are called lithification.

Detailed explanation-3: -The most important geological processes that lead to the creation of sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification.

Detailed explanation-4: -Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.

Detailed explanation-5: -Sediment and Sedimentation The terms, in order of decreasing size, are boulder (> 256 mm), cobble (256-64 mm), pebble (64-2 mm), sand (2-1/16 mm), silt (1/16-1/256 mm), and clay (< 1/256 mm).