Simple Lithology


definition Unsorted or poorly sorted, clastic sedimentary rock with a wide range of particle sizes including a muddy matrix. Biogenic materials that have such texture are excluded. Distinguished from conglomerate, sandstone, mudstone based on polymodality and lack of structures related to transport and deposition of sediment by moving air or water. If more than 10 percent of the fine grained matrix is of indeterminant clastic or diagenetic origin and the fabric is matrix supported, may also be categorized as wacke. more like this
example pebbly mudstone more like this
source Fairbridge and Bourgeois 1978 more like this
broader clastic sedimentary rock
narrower diamictite
in scheme simplelithology
is primary topic of diamictite