What is the process involved in the formation of sedimentary rock?
Most sedimentary rocks are derived from existing rocks or from organic materials such as bone or shell. The exogenic process of weathering and erosion provide the raw materials needed to form sedimentary rocks. Bits and pieces of former rocks- pricpally quartz, feldspar, and clay minerals-are eroded and then mechanically transported ( by ice, wind, and gravity) to other sites, where they are deposited. In addition, some minerals go into solution and form sedimentary deposits by precipitating from those solutions; this is an mportant process in the oceanic enviornment.