Record details

    Biostratigraphy and Palaeoenvironment of the marly marine transgression of Weissenbachalm Lower Gosau-Subgroup (Upper Turonian-Lower Santonian Grabenbach-Formation, Northern Calcareous Alps, Styria)
Statement of responsibility
    Lenka Hradecká, Harald Lobitzer, Franz Ottner, Reinhard F. Sachsenhofer, Ágnes Siegl-Farkas, Lilian Švábenická, Irene Zorn
Other titles
    Geologie ohne Grenzen - Festschrift 150 Jahre Geologische Bundesanstalt (Variant.)
    Hradecká, Lenka
    Lobitzer, Harald
    Ottner, Franz
    Sachsenhofer, Reinhard F.
    Siegl-Farkas, Ágnes
    Švábenická, Lilian, 1953-
    Zorn, Irene
Source title - serial
    Abhandlungen der Geologischen Bundesanstalt
    Vol. 56, no. 2
    p. 475-517
    4 obr., 1 fot., 7 tab., 10 pl.
    Německé resumé
    Obsahuje bibliografické odkazy
    Zkr. název ser.: Abh. Geol. Bundesanst. (Wien)
Subject group
    minerály jílové
    sedimentace mořská
    uhelná sloj
    zóny biostratigrafické
Geographical name
Abstract (in english)
   An interdisciplinary study of the Weissenbachalm Lower Gosau-Subgroup comprising mineralogical analysis and the study of foraminifers, ostracodes, nannoplankton and palynomorphs provided the following results: grey neritic marls of the Grabenbach-Formation were deposited within the Late Turonian-Early Santonian interval and are dated as being within the Dicarinella concavata Zone and UC9a, UC10 and UC11c nannoplankton zones sensu BURNETT (1998). Three types foraminiferal assemblages documented by plankton/benthos ratio show a gradual sea-level rise within a shallow marine to neritic environment. The ostracode assemblages alsoi reflect this trend of a gradual sea level rise from the Late Turonian to the Early Santonian. A peculiar facies development within the Grabenbach-Formation represented by coral marls occurs in the Late Turonian.
   The upper part of the Grabenbach grey marls, which are already of Early Santonian age, show dm-thick intercalations of pelecypod coquina limestones and plant debris bearing sandstones, which are interpreted here as tempestites. The occurrence of Boreal genera in the palynomorph spectrum which is otherwise Mediterranean in character gives evidence of a transitional area between the Mediterranean and Boreal bioprovinces. In addition, a partial revision of TOLLMANN'S (1960b) foraminiferal taxa is presented which, however, was only based on our new collections and not on the original material. A comparison of the foraminiferal and nannofossil associations with others from the Bohemian Cretaceous Basin is also given. Furthermore, a 70 cm thick coal seam was located, which according to vitrinite reflectance is of the subbituminous B coal type
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    25. 3. 2008
Import date
    8. 8. 2012