Record details

Title
    The Lower Eifelian Boundary
Statement of responsibility
    Willi Ziegler
Author
    Ziegler, Willi
Language
    anglicky
Source title - monograph
    Subcommission on Devonian Stratigraphy, Recognition of Devonian series and stage boundaries in geological areas. Courier Forschungsinstitut-Senckenberg 225
Pages
    s. 27-36
Notes
    6 obr., 2 s.bibl.
    il.
    Německé resumé
Subject group
    Barrandien
    Conodonta
    devon-spodní
    devon-střední
    eifel
    Goniatitida
    korelace stratigrafická
    mezinárodní spolupráce
    pražská pánev
    sedimenty karbonátové
    stratotyp
    zóny biostratigrafické
Geographical name
    ČR-Čechy
    Praha - Holyně
    SRN-Rheinland-Pfalz
Keyword
    Boundary
    Eifelian
    Lower
Abstract (in english)
   The historic development of the decision of the International Subcommission leading to the definition of the Lower-Middle Devonian Boundary and to the establishment of a Global Stratotype Section and Point (GSSP) is reviewed herein. The first appearance of Polygnathus costatus partitus from within the phyletically related Po.costatus group was set to mark the boundary between Emsian and Eifelian. This biochronologic level is coincident with the start of the Middle Devonian Series and with the start of the Eifelian Stage. The GSSP was selected in the Wetteldorf Richtschnitt section, Eifel Hills, western Germany. 1.90m below the historie Heisdorf/Lauch Boundary as the new Lower-/Middle-Devonian Boundary. After selection, the partitus-Boundary proved to be a precise, secure and stable tool for correlation the Lower-/Middle Devonian Boundary within all five continents
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    31. 3. 2008
Import date
    8. 8. 2012