ERS120H5 Lecture Notes - Lecture 7: Clastic Rock, Turbidite, Silt
Document Summary
Clastic means loose rock fragments cemented together. Conglomerate rock can be found in a river, gravel is the clast size, is rounded, poorly sorted, with less mature composition. Mudstone can be found at the bottom of bodies of water, is silt is the clast size, too fine to define shape, well sorted, mature composition. Sandstone rock can be found on a beach, is silt, shape is too fine to define, moderately sorted, and composition is mature. Sandstone can be found in sand dunes, clast size is hard to define, shape moderately rounded, sorted well, composition is mature. Turbidite is a density flow of deep water material. The current slows and deposits sediment downhill in an avalanche-like manner. The coarsest material sits at the bottom, and finer grains sequentially on top. Biochemical means cemented shells of organisms: limestone is an example. Organic means carbon rich remains of a once living organism: coal is an example.
