دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a part of a stratigraphic unit that differs in its fossil fauna and flora from the rest of the unit.

n: a contour line drawn on a map joining points of equal thickness in a stratigraphic unit.

n: a facies map showing lithologic variations within a formation. It shows the variations of selected lithologic characteristics within a stratigraphic unit.

a map of subsurface changes in formation physical properties.

n: a distinctive body of rock that can be identified by its lithologic or structural features regardless of its fossils or time boundaries;commonly, a formation. Compare time stratigraphic unit.

n: unit consisting of stratified, mainly sedimentary, rocks grouped for description, mapping, correlation, or the like.

n: a layer of rock, with or without facies variations, deposited during a distinct geologic time interval. Compare rock stratigraphic unit.