Neocomian


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Neocomian

[¦nē·ə¦kō·mē·ən]
(geology)
A European stage of Lower Cretaceous geologic time; includes Berriasian, Valanginian, Hauterivian, and Barremian.

Neocomian

 

(from Neocomium, the Latin name for the canton of Neuchâtel, Switzerland), a division of the Lower Cretaceous. The Neocomian was identified in 1835 by the Swiss geologist J. Thurmann. At first it was considered to be the lowest stage of the Cretaceous system. After the Berriasian, Valanginian, Hauterivian, and Barremian stages were established within the Neocomian in the second half of the 19th century, the Neocomian has usually been understood to mean the superstage comprising these four stages.

References in periodicals archive ?
System Stage Formation No Elevation above sea level, m Neogene Pliocene Aghchegil 1 150 Upper Paleocene-Eocene Khangiran 2 1321 Paleogene Paleocene Chelkaman 3 1102 Lower Paleocene Pesteligh 4 1277 Maastrichtian Kalat 5 1249 Maastrichtian Neizar 6 1050 Santonian-Campanian Abtalkh 7 1190 Turonian-Coniacian Abderaz 8 1232 Cretaceous Albian-Cenomanian Aitamir 9 1223 Albian Sanganeh 10 1053 Aptian Sarcheshmeh 11 1019 Neocomian-Aptian Tirgan 12 1149 Neocomian Shurijeh 13 1156 Oxfordian-Kimmeridian Mozduran 14 903 Jurassic Bathonian-Callovian Chamanbid 15 1568 Bajocian Bashkalate 16 1646 Toarcian-Aalenian Kashafrud 17 1402 Table 2 Average contents of clay minerals in the studied formations.
Age of Fahliyan formation in Kuh-e-Surmeh section is Neocomian due to existing fossil association.
The Neocomian aged sands expected to be intersected by Nyuni 2 are the main reservoir sands at the Songo Songo Gas Field and at the Kiliwani North Gas Field (Bounty: 5% interest) located on Songo Songo Island 20 km south of Nyuni Island.
Neocomian to Albian age has been assigned to this formation.
The well log show eight metres of net oil pay in the Neocomian sandstone reservoir at true vertical depths of 660 to 668 metres.
Other than some Neocomian bivalves from north of the arroyo north of the village of Sierra Mojada, collected by James E.
The Neocomian Complex, one of our two producing assets, accounted for 93.
With an unconformity in the Berriasian, fluvial siliciclastic sandstones and coarser sediments interfingering with shallow water carbonates and shales characterise the Neocomian (Berriasian to Early Aptian).
All of our proved reserves are located in the Paris Basin, France, and the Neocomian Complex accounted for 93.
The Company considers the increase of reserves is attributable to a better performance of the Company's main field, the Neocomian Complex, together with an increase in the oil price used to calculate the 2009 reserves estimates as compared to 2008.
Loup D'Ordon-1 exploration well was drilled to test a Neocomian channel sand to the northeast of Toreador's Neocomian Field Complex in the Paris Basin.
Loup d'Ordon-1 exploration well, located in the Courtenay exploration permit in the southern Paris Basin, is being drilled to test lower Cretaceous Neocomian channel sands that are productive in Toreador's Neocomian Field Complex to the southwest of the well site.