stratotype

stratotype

[′strad·ə‚tīp]
(geology)
A specifically bounded type section of rock strata to which a time-stratigraphic unit is ascribed, ideally consisting of a complete and continuously exposed and deposited sequence of correlatable strata, and extending from a readily identifiable basal boundary to a readily identifiable top boundary.
References in periodicals archive ?
9 ha) presents the surface geological formation "Formacion Pereira (TQP)"; in its stratotype, it consists of two blocks, the top one is made of of volcanic ash that can reach depths greater than 35 m and the bottom by fluvial deposits and glacial-volcanic deposits from the Plio-Pleistocene.
At Green Point (GP), where the Cambrian/Ordovician boundary stratotype is located, the west-facing cliff is partly composed of friable shale and fine-grained sandstone that are receding at some slow rate, not yet established: the limestone conglomerate beds here are rather more resistant to erosion.
2005): The Global boundary Stratotype Section and Point (GSSP) of the Ladinian Stage (Middle Triassic) at Bagolino (Southern Alps, Northern Italy) and its implications for the Triassic time scale.
The Global Boundary Stratotype Section and Point for the base of the Turonian Stage of the Cretaceous: Pueblo, Colorado, U.
72 55' E) is situated about 50 km northeast of the Chinji stratotype, Chinji Formation (Fig.
It shows overlapping of temporal ranges with that of the Chinji stratotype which correspond to the MN6 as well as MN7/8 (Heissig 1972; Colbert 1935; Pickford and Morales 2003).
Landing, "Precambrian-Cambrian Boundary Global Stratotype Ratified and a New Perspective of Cambrian Time," Geology 22, no.
MACFADDEN, BJ, 1977: Magnetic polarity stratigraphy of the Chamita Formation stratotype (Mio-Pliocene) of North-central New Mexico.
2008): "Formal definition and dating of the GSSP Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records", Episodes, 31 (2) (on line).
The Global Boundary Stratotype Section and Point for the base of the Danian Stage (Paleocene, Paleogene, "Tertiary", Cenozoic) at El Kef, Tunisia-Original definition and revision.