Psephite (Greek: psephos, "pebble")[1] is either a sediment or sedimentary rock composed of fragments that are coarser than sand and which are enclosed in a matrix that varies in kind and amount. It is equivalent to a rudite. Shingle, gravel, breccia, and especially conglomerate, would all be considered psephites. It is equivalent to the Latin-derived term rudite. Psephite is more commonly used for a metamorphosed rudite.[2]
Pettijohn [3] gives the following descriptive terms based on grain size, avoiding the use of terms such as "clay" or "argillaceous", which carry an implication of chemical composition:
^Neuendorf, K.K.E., J.P. Mehl, Jr., and J.A. Jackson, J.A., eds. (2005) Glossary of Geology (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. ISBN0-922152-76-4
psephite, greek, psephos, pebble, either, sediment, sedimentary, rock, composed, fragments, that, coarser, than, sand, which, enclosed, matrix, that, varies, kind, amount, equivalent, rudite, shingle, gravel, breccia, especially, conglomerate, would, considere. Psephite Greek psephos pebble 1 is either a sediment or sedimentary rock composed of fragments that are coarser than sand and which are enclosed in a matrix that varies in kind and amount It is equivalent to a rudite Shingle gravel breccia and especially conglomerate would all be considered psephites It is equivalent to the Latin derived term rudite Psephite is more commonly used for a metamorphosed rudite 2 Pettijohn 3 gives the following descriptive terms based on grain size avoiding the use of terms such as clay or argillaceous which carry an implication of chemical composition Descriptive size terms Texture Common Greek LatinCoarse gravel ly psephite psephitic rudite rudaceous Medium sand y psammite psammitic arenite arenaceous Fine clay ey pelite pelitic lutite lutaceous References Edit psῆfos Liddell Henry George Scott Robert A Greek English Lexicon at the Perseus Project Neuendorf K K E J P Mehl Jr and J A Jackson J A eds 2005 Glossary of Geology 5th ed Alexandria Virginia American Geological Institute 779 pp ISBN 0 922152 76 4 Pettijohn F J 1975 Sedimentary Rocks Harper amp Row ISBN 0 06 045191 2 nbsp This sedimentary rock related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Psephite amp oldid 1166616249, wikipedia, wiki, book, books, library,
