Welcome to Country Auto Sales. We are a full service Massachusetts used car dealer located in Southwick serving the towns of Hampden County, Springfield MA, Worcester MA, Boston MA, Westfield MA, Agawam MA, West Springfield MA, Longmeadow MA, Springfield MA, Chicopee MA, Windsor Locks CT, Holyoke MA, East Longmeadow MA, Easthampton MA, Ludlow MA, South Hadley MA, Somers CT, Wilbraham MA and Ellington CT.
Clastic sedimentary rocks form when individual grains (the sediment), made by fragments of rocks, minerals, or shells, are cemented together (the clastic sediemntary rock). These are the only type of rock that is NOT made simply of crystals, but rather fragments of other materials, broken and then reassembled together.
There are four primary types of sedimentary rocks: clastics, carbonates, evaporites, and chemical. 1  Clastic rocks are composed of particles derived from the weathering and erosion of precursor rocks and consist primarily of fragmental material. Typically, the majority of carbonate rocks are composed of reef material. 2  Evaporites are formed through the evaporation of water at the Earth's surface and most commonly include halite or gypsum. 3  Chemical sedimentary rocks, including some carbonates, are deposited by precipitation of minerals from aqueous solution.