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Stratum (other)
A stratum in geology is a layer of sedimentary rock or sediment. In archaeology, it is a layer of man-produced sediment of a certain age. Stratum may also refer to: Science and technology *Layer or stratum (archaeology): see Stratigraphy (archaeology) *Stratum (linguistics), a language influencing or influenced through language contact *Stratum (statistics), in stratified sampling, a homogeneous subgroup of members in the population *Stratum, an element of a topologically stratified space *Clock stratum, in a clock network, a hierarchical level reflecting the quality of a clock Other uses *Stratum, Netherlands, a city district of Eindhoven *Stratum (album), ''Stratum'' (album), a 2012 album by Drottnar *Stratum (sculpture), ''Stratum'' (sculpture), a series of sculptures by Mikyoung Kim in Portland, Oregon, US See also *Strata (other) *Stratification (other) *Stratus (other) *Substrate (other) *Superstrate {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratum
In geology and related fields, a stratum ( : strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that distinguish it from adjacent layers from which it is separated by visible surfaces known as either '' bedding surfaces'' or ''bedding planes''.Salvador, A. ed., 1994. ''International stratigraphic guide: a guide to stratigraphic classification, terminology, and procedure. 2nd ed.'' Boulder, Colorado, The Geological Society of America, Inc., 215 pp. . Prior to the publication of the International Stratigraphic Guide, older publications have defined a stratum as either being either equivalent to a single bed or composed of a number of beds; as a layer greater than 1 cm in thickness and constituting a part of a bed; or a general term that includes both ''bed'' and ''lamina''.Neuendorf, K.K.E., Mehl, Jr., J.P., and Jackson, J.A. , eds., 2005. ''Glossary of Geology'' 5th ed. Alexandria, Virginia, American Geological Institute. 779 pp. . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |