Albian Stage

Albian Stage

      uppermost of six main divisions of the Lower Cretaceous Series, representing rocks deposited worldwide during the Albian Age, which occurred between 112 million and 99.6 million years ago during the Cretaceous Period. Albian rocks overlie rocks of the Aptian Stage and underlie rocks of the Cenomanian Stage.

      The name for this stage is derived from the Alba, the Roman name for Aube, France, for which the surrounding area serves as the classic type district for rocks of this age. In Britain the Albian is represented by the Upper Greensand–Gault Clay sequence of rocks; elsewhere in northern Europe it consists of the upper portions of the thick Hils clay. Sandstones and shaley limestones dominate the Albian of the Middle East and North Africa, and sandstones, shales, and basaltic lavas occur in East Asia. The Albian is divided into several biozones (biozone) representing shorter spans of time that are characterized by various distinctive ammonite (ammonoid) genera.

* * *


Universalium. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Albian — (French Albion , from Alba = Aube in France) is a stage of the Cretaceous period.Albian is a term proposed in 1842 by A. d Orbigny for that stage of the Cretaceous system which comes above (later) the Aptian and below (before) the Cenomanian (Pal …   Wikipedia

  • Albian Sands — Energy Inc. is the operator of the Muskeg River Mine, an oil sands mining project located 75 kilometres (47 mi) north of Fort McMurray, Alberta, Canada. It is a joint venture between Shell Canada (60%), Marathon Oil Canada (20%) and Chevron… …   Wikipedia

  • Aptian Stage — ▪ geology       fifth of six main divisions (in ascending order) in the Lower Cretaceous Series, representing rocks deposited worldwide during the Aptian Age, which occurred 125 to 112 million years ago during the Cretaceous Period. Rocks of the… …   Universalium

  • Cenomanian Stage — ▪ geology       first of six main divisions (in ascending order) in the Upper Cretaceous Series, representing rocks deposited worldwide during the Cenomanian Age, which occurred 99.6 to 93.5 million years ago during the Cretaceous Period. Rocks… …   Universalium

  • Oxfordian (stage) — System Series Stage Age (Ma) Cretaceous Lower Berriasian younger Jurassic Upper Tith …   Wikipedia

  • Cretaceous Period — Interval of geologic time from с 144 to 65 million years ago. During the Cretaceous the climate was warmer than today. In the seas, marine invertebrates flourished, and bony fishes evolved. On land, flowering plants arose, and insects, bees in… …   Universalium

  • angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

  • Species of Psittacosaurus — Seventeen species have been assigned to the extinct ceratopsian dinosaur genus Psittacosaurus , although only nine to eleven are considered valid.Xu Xing Zhao Xijin. (1999). Psittacosaur fossils and their stratigraphical implications. In: Wang Y …   Wikipedia

  • Polyptychodon — Taxobox name = Polyptychodon fossil range = Early Late Cretaceous image width = 250px regnum = Animalia phylum = Chordata classis = Sauropsida ordo = Plesiosauria subordo = Pliosauroidea familia = Pliosauridae genus = Polyptychodon genus… …   Wikipedia

  • Carcharodontosaurus — Temporal range: Early–Late Cretaceous, 100–93 Ma …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”