دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

adj: of or relating to the geologic period from about 400 million to 350 million years ago in the Paleozoic era, or to the rocks formed during this period, including those of Devonshire, England, where outcrops of such rock were first identified.

a geological time between 365 million and 405 million years ago.

n: a bed or deposit composed throughout of substantially the same kind of rock;often a lithologic unit. Each formation is given a name, frequently as a result of the study of the formation outcrop at the surface and sometimes based on fossils found in the formation.

n: a bed or deposit composed throughout of substantially the same kind of rock and forming a lithologic unit.

any distinct, mapable layer.

n: diamond cutting blade on polycrystalline diamond compact are all outcrop in the outside of matrix.

n: part of a formation exposed at the earths surface. v: to appear on the earths surface (as a rock).

where a formation surfaces.

n: horizontal representation of the rock types at the surface or just beneath the layer of soil.

n: a geologic time period in the Paleozoic era, from 320 to 280 million years ago. Also, the latter part of the Carboniferous period. It was named for the outcrops of coal in Pennsylvania. pentane n: a liquid hydrocarbon of the paraffin series, CsHI2