This photomicrograph shows a bedding plane (yellow line) in a layer of sandstone. the blue areas are dyed epoxy (used to attach the rock to the microscope slide) that has filled in the pore space in the rock. the bedding in this specimen is primarily defined by a change in which of the following?

Sedimentary Rocks Rivers, oceans, winds, and rain runoff all have the ability to carry the particles washed off of eroding rocks. Such material, called detritus, consists of fragments of rocks and minerals. When the energy of the transporting current is not strong enough to carry these particles, the particles drop out in the process of sedimentation. This type of sedimentary deposition is referred to as clastic sedimentation. Another type of sedimentary deposition occurs when material is dissolved in water, and chemically precipitates from the water. This type of sedimentation is referred to as chemical sedimentation. A third process can occur, wherein living organisms extract  ions dissolved in water to make such things as shells and bones.  This type of sedimentation is called biochemical sedimentation.  The accumulation of plant matter, such as at the bottom of a swamp, is referred to as organic sedimentation.  Thus, there are 4 major types of sedimentary rocks: Clastic Sedimentary Rocks, Chemical Sedimentary Rocks, Biochemical Sedimentary Rocks, and Organic Sedimentary Rocks.

South central region

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