Maestrichtian

Maestrichtian

[ma′strik·tē·ən]
(geology)
A European stage of geologic time: Upper Cretaceous (above Menevian, below Fastiniogian).
References in periodicals archive ?
7% sulphur, reservoired in Maestrichtian Garzan carbonates.
The second is a piece of a honey-coloured flint blade of the Maestrichtian from the region of Bergerac some 50km to the south-west.
The DIVA results indicate that the Maestrichtian to Paleocene sediments in the southern and mainly in the southwestern sector of the Anambra basin should be the major sedimentary strata with liquid hydrocarbon potentials, whereas the Lower Cretaceous and particularly the Santonian sediments exhibit the highest potentials for gaseous hydrocarbons.
The oldest record is from the Maestrichtian in Canada
Asia, the Maestrichtian in North America, and the Paleocene in South
7% sulphur content, reservoired in Maestrichtian Garzan carbonates.
Shallow carbonates recovered from several sites along the Ninetyeast Ridge evolved from Campanian (approximately 80 million year old) algae and coral-rich limestones at the most northern site, Maestrichtian (about 70 million year old) shallow carbonates farther south, Paleocene (some 63 million year old) gastropods, bivalves, and echinoderms at a more southern site, and, finally, at the most southern site, a middle/upper Eocene to lower Oligocene (52 to 30 million year old) faunal assemblage.
Morphologically abnormal planktic foraminifera are present in the uppermost meter of the upper Maestrichtian Kemp Clay in east-central Texas.
It is transgressive similar to the facies characterising the Maestrichtian (Shiranish) and Campanian (Soukhne) Fms of the Palmyrids.
The formation conformably overlies the Afowo Formation and Maestrichtian to Paleocene age has been assigned (Omatsola and Adegoke, 1981).
The phosphate mineral was deposited over a long time window from Maestrichtian (late Cretaceous, about 80 ma), to Lutetian (early Eocene, 40 ma).
It is transgressive and similar to the facies characterising the Maestrichtian (Shiranish) and Campanian (Soukhne) formations of the Palmyrids.