View current agendas and minutes for all boards and commissions. Previous years' agendas and minutes can be found in the Archive Center.
Deposition is the process by which wind or water sediment settles out in layers. Furthermore, over time, the remains of living things may harden in this sediment and change into fossils. After sediment is deposited the processes of compaction and cementation change the fragments into sedimentary rock. Compaction. At first, the fragments of rock lie loosely together. But gradually, over many, many years these thick layers build up. This build up becomes heavy and presses down on the layers beneath it. Compaction is the pressing down of layers forcing the sediments to fit closer together. Over millions of years, this process can squeeze fragments tightly together. The layers often remain visible in the rock and may be used to identify sedimentary rock. Cementation
How does weathering, erosion and deposition contribute to the rock cycle? these 3 are few of many processes which helps in rock formation to understand these processes and their contribution to rock cycle we have to study the whole cycle. I will explain in brief summary here: first start with . magma erupts (Extrusive igneous rocks) or solidifies in sub-surface of earth (Intrusive igneous rock). when they are exposed and erosion occurs which is slow breakdown of rock through wind, water or other processes. The weathered pieces (sediments) move to other places by wind or water and get deposited someplace else.