GEOLOGY

Detailed explanation-1: -Dissolved minerals in the ground water precipitate (crystallize) from water in the pore spaces forming mineral crusts on the sedimentary grains, gradually cementing the sediments, thus forming a rock. Calcite (calcium carbonate), silica, and hematite (red iron oxide) are the most common cementing agents.

Detailed explanation-2: -The layers are squeezed together and any water mixed in with the sediments is forced out. This process is called compaction. At the same time the particles of sediment begin to stick to each other-they are cemented together by clay, or by minerals like silica or calcite. This process is called cementation.

Detailed explanation-3: -Over time, sediment accumulates in oceans, lakes, and valleys, eventually building up in layers and weighing down the material underneath. This weight presses the sediment particles together, compacting them. Water passing through the spaces in between the particles helps to cement them together even more.

Detailed explanation-4: -Cementation is the process in which dissolved minerals crystallize and glue particles of sediment together.

Detailed explanation-5: -The definition of cementation is a process where sediment is chemically glued together when minerals precipitate from the water they are dissolved in and fill the pore space between compressed sediment.