Aquitanian Stage

Aquitanian Stage

      earliest and lowermost division of Miocene (Miocene Epoch) rocks, representing all rocks deposited worldwide during the Aquitanian Age (23 million to 20.4 million years ago) of the Neogene Period (the past 23 million years). The stage is named for exposures in the region of Aquitaine in southwestern France.

      The Global Stratotype Section and Point (GSSP) defining the lower boundary of this stage, ratified by the International Commission on Stratigraphy (ICS) in 1996, is located in the Lemme-Carrosio Section within the village of Carrosio, Italy. This lower boundary closely coincides with the base of the zone of the foraminiferan (pseudopod-using unicellular organism protected by a test or shell) Paragloborotalia kugleri and the first occurrence of the calcerous nannofossil (remains of ocean-dwelling golden-brown algae) Sphenolithus capricornutus. The Aquitanian Stage precedes the Burdigalian Stage and is underlain by the Chattian Stage of the Paleogene Period.

* * *


Universalium. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Aquitanian age — Aquitanian is the first age of the Miocene Epoch. It spans the time between 23.03 ± 0.05 Ma and 20.43 ± 0.05 Ma (million years ago). The Aquitanian Stage succeeds the Chattian age of the Oligocene Epoch and precedes the Burdigalian Stage.… …   Wikipedia

  • Aquitanian — could refer to:*Aquitanian age, a geological age, the first stage of the Miocene Epoch *Aquitanian language, an ancient language spoken in the region later known as Gascony …   Wikipedia

  • aquitanian — I. |akwə|tānēən, nyən adjective Usage: usually capitalized Etymology: Aquitania, Roman division of southwestern Gaul + English ian 1. : of or relating to Aquitania 2. : of or relating to a subdivision of the European Oligocene II. noun …   Useful english dictionary

  • Burdigalian Stage — ▪ geology       the second of six stages (in ascending order) subdividing Miocene (Miocene Epoch) rocks, representing all rocks deposited worldwide during the Burdigalian Age (20.4 million to 16 million years ago) of the Neogene Period (the past… …   Universalium

  • Chattian Stage — ▪ geochronology also called  Casselian Stage         uppermost and latest division of Oligocene (Oligocene Epoch) rocks, representing all rocks deposited worldwide during the Chattian Age (28.4 million to 23 million years ago) of the Paleogene… …   Universalium

  • Saucesian Stage — ▪ geology       lowermost and oldest major division of Early Miocene rocks and time (23.7 to 16.6 million years ago) on the Pacific coast of North America. The Saucesian Stage, which preceded the Relizian Stage, was named for exposures studied at …   Universalium

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

  • Chattian — System Series Stage Age (Ma) Neogene Miocene Aquitanian younger Paleogene Oligocene …   Wikipedia

  • Okeechobean Sea — Table displaying the Okeechobean Sea and its relation to geologic time and North American Land Mammal Ages. Dry periods or marine regressive periods are tan in color. The Okeechobean Sea was a Cenozoic eutropical subsea, which along with the… …   Wikipedia

  • Miocene Epoch — Major division of the Tertiary Period, from 23. 8 to 5.3 million years ago. The extensive fossil record of terrestrial life during the Miocene provides a fairly complete picture of the development of vertebrates, especially mammals. Miocene… …   Universalium

Share the article and excerpts

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