Capitanium

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system series step ≈ age ( mya )
higher higher higher younger
Perm Lopingium Changhsingium 251.9
⬍
254.2
Wuchiapingium 254.2
⬍
259.9
Guadalupium Capitanium 259.9
⬍
265.1
Wordium 265.1
⬍
268.8
Roadium 268.8
⬍
272.3
Cisuralium Kungurium 272.3
⬍
279.3
Artinskium 279.3
⬍
290.1
Sacmarium 290.1
⬍
295.5
Asselium 295.5
⬍
298.9
deeper deeper deeper older

The Capitanium (also shortened to Capitan) is the highest chronostratigraphic level (or geochronological age) of the Middle Perm or the Guadalupium series. The stage covers the period from approximately 265.1 million years to 259.9 million years. The Capitanium follows the Wordium and is overlaid by the Wuchiapingium .

Naming and history

The stage and name were suggested as early as 1904 by George Burr Richardson . The eponymous locality is the Capitan Reef in the Guadalupe Mountains in Texas , USA . In 1961 Brian F. Glenister and William Madison Furnish defined the Capitanium as the chronostratigraphic lower level of their, at that time still regional, level of the Guadalupian. In 2001 the Capitanium was ratified by the IUGS as a global chronostratigraphic level .

Definition and GSSP

The first appearance of the conodont species Jinogondolella postserrata marks the beginning of the stage. The end is defined by the first appearance of the conodont subspecies Clarkina postbitteri postbitteri . The type locality ( GSSP ) of the Capitanium is at Nipple Hill in the southern Guadalupe Mountains in Texas , USA .

Breakdown

The Capitanium covers the entire Timorites Ammonite biozone. It can be divided into three conodonts biozones:

  • Zone of the Clarkina postbitteri hongshuiensis
  • Zone of the Jinogondolella altudaensis
  • Zone of the Jinogondolella postserrata

The fusulinid large foraminifera allow the distinction between two biozones:

  • Rausserella zone
  • Afganella schenki

correlation

In Central Europe, the Capitanium stage corresponds to the lithostratigraphic unit of the Oberrotliegend or the upper part of the old Saxonium stage. In the eastern Tethys the capitanian corresponds to the upper part of the regional Murgabium stage, regional Midium stage and the lower part of the regional Laibinium stage. In Russia, the lower part of the regional Severodvinium level correlates with the Capitanium.

Individual evidence

  1. ↑ Map of the locality
  2. ↑ TimeScale Creator from http://www.stratigraphy.org/

literature

  • Brian F. Glenister, Bruce R. Wardlaw, Lance L. Lambert, Claude Spinosa, SA Bowring, DH Erwin, Manfred Menning and Garner L. Wilde: Proposal of Guadalupian and Component Roadian, Wordian and Capitanian Stages as International Standards for the Middle Permian Series. Permophiles, 34: 3-11, 1999 PDF
  • Felix Gradstein, Jim Ogg, Jim & Alan Smith: A Geologic timescale. Cambridge University Press 2005, ISBN 978-0-521-78673-7
  • Yugan Jin , Shuzhong Shen, Charles M. Henderson, Xiangdong Wang, Wei Wang, Yue Wang, Changqun Cao and Qinghua Shang: The Global Stratotype Section and Point (GSSP) for the boundary between the Capitanian and Wuchiapingian Stage (Permian). In: Episodes. 29 (4): 253-262, Beijing 2006 ISSN  0705-3797

Web links