stratotype
stratotype (type section) An actual rock succession, chosen at a particular locality (the type locality) to act as the standard comparison for all other chronostratigraphic or lithostratigraphic units of its ilk. Generally, the type section of a stratigraphic unit should be the rock succession originally so designated and described (the holostratotype), but circumstances may require amendment (see LECTOSTRATOTYPE; and NEOSTRATOTYPE), or amplification (see PARASTRATOTYPE; and HYPOSTRATOTYPE). However, although many similar sequences may exist, only a single stratotype at any one time can act as the standard. See also BOUNDARY-STRATOTYPE; COMPOSITESTRATOTYPE; COMPONENT-STRATOTYPE; and TYPE AREA.
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Monotype , Monotype •gripe, hype, mistype, pipe, ripe, sipe, slype, snipe, stripe, swipe, tripe, type, wipe •guttersnipe • bagpipe • standpipe •tailpipe • drain… chronozone , chronozone The lowest-ranking chronostratigraphic unit. The duration of a chronozone is defined by a type section which may be based on a biostratigr… mating type , mating type The equivalent in lower organisms (especially micro-organisms) of sexes in higher organisms. Microorganisms may be subdivided into mating… Type Specimen , Skip to main content
type specimen Gilbert-type Delta , Skip to main content
Gilbert-type delta Type , type / tīp/ • n. 1. a category of people or things having common characteristics: this type of heather grows better in a drier habitat blood types. ∎…
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stratotype