GEOL107 Chapter Notes - Chapter 6: Breccia, Crystallization, Gypsum
11 Sep 2018
School
Department
Course
Professor
Document Summary
The collective name for loose, solid particles of mineral that originate from: Weathering and erosion or preexisting rocks (detrital sediments) Precipitation from solution, including secretion by organisms in water (chemical sediments) Considered to be unconsolidated the grains are separate, or unattached to one another. All rounded particles coarser than 2mm in diameter. Grains are from 1/16 mm to 2 mm in diameter. Too small to see without a magnifying device. Mud mix of silt and clay. Sediment continues to weather and change in character in proportion to the distance the sediment is moved. The grinding away of sharp edges and corners of rock fragments during transportation. Occurs in sand and gravel as rivers, glaciers, or waves cause particles to hit and scrape against one another or against a rock surface. Process by which sediment grains are selected and separated according to grain size by the agents of transportation, especially by running water. When transported material settles or comes to rest.
