Cretaceous formation

(Geol.) the series of strata of various kinds, including beds of chalk, green sand, etc., formed in the Cretaceous period; - called also the chalk formation. See the Diagram under Geology.

See also: Cretacic

References in periodicals archive ?
Sarir was found in 1961 by BP in an Upper Cretaceous formation (Fm).
AOC) of Japan, is a 10x7 km field containing sour oil and over 35 TCF of non-associated gas from a Middle Cretaceous formation.
The licence also includes a find in the Cretaceous formation which will be separated and retained by Noreco.
Sarir field was found in 1961 by BP at a depth of 9,000 feet in an Upper Cretaceous formation (Fm).
In the stratigraphic segmentation of Cretaceous Formation of the Ohre region elaborated by M.
Testing in the Lower Cretaceous formation resulted in no measurable flow of hydrocarbons to surface due to the lack of an extensive connected fracture network at this location.
It is recorded as a discordance between the synclinal structure of the ISS and platform-like Cretaceous formation (Fig.
In late 2000 Inelectra had made a major oil discovery on the block as its Punta Sur IX well tested 3,300 b/d of 19o API oil from a Cretaceous formation at a depth of 8,200 feet.