TY - BOOK

T1 - Magnetostratigraphie an geologischen Zeitgrenzen in den Karnischen Alpen und nördlichen Kalkalpen

AU - Zeissl, Wolfgang

PY - 2000/11/23

Y1 - 2000/11/23

N2 - The magnetostratigraphy of the Permian/Triassic section of the Reppwand/Kammleiten area (Carnic Alps/Carinthia) as well as that of the Cretaceous/Tertiary of the Gosau Formation (Elend-, Knappengraben) in theNorthern Calcerous Alps (NCA) should prove the geostratigraphic position of these boundaries and enlarge the information about alpidic tectonism and palinspastic reconstruction. The results of Rock Magnetism of the Reppwand/Kammleiten profiles indicate a multicomponent magnetization of all limestones and dolomites. The strain measured from the degree of the anisotropy of the susceptibility shows a NE-SW direction which can be correlated with the local tectonic compression directions during the alpidic orogeny. In the Knappengraben, E of Gams/Hieflau, Styria, a section ranging from Upper Maastrichtian to the Paleocene was sampled for paleomagnetic investigations to get informations of the magnetic polarity pattern, especially within the range of the Cretaceous/Tertiary boundary. In addition to this work the transition zone in Uppermost Maastrichtian was sampled in very small distances up to 0.02 m to study the shape and earth's field intensity during a polarity change. Fourieranalysis was used to synthesize PSV (PaleoSecularVariation) of the geomagnetic field during a reversal. (Author, shortened by G.Q.).

AB - The magnetostratigraphy of the Permian/Triassic section of the Reppwand/Kammleiten area (Carnic Alps/Carinthia) as well as that of the Cretaceous/Tertiary of the Gosau Formation (Elend-, Knappengraben) in theNorthern Calcerous Alps (NCA) should prove the geostratigraphic position of these boundaries and enlarge the information about alpidic tectonism and palinspastic reconstruction. The results of Rock Magnetism of the Reppwand/Kammleiten profiles indicate a multicomponent magnetization of all limestones and dolomites. The strain measured from the degree of the anisotropy of the susceptibility shows a NE-SW direction which can be correlated with the local tectonic compression directions during the alpidic orogeny. In the Knappengraben, E of Gams/Hieflau, Styria, a section ranging from Upper Maastrichtian to the Paleocene was sampled for paleomagnetic investigations to get informations of the magnetic polarity pattern, especially within the range of the Cretaceous/Tertiary boundary. In addition to this work the transition zone in Uppermost Maastrichtian was sampled in very small distances up to 0.02 m to study the shape and earth's field intensity during a polarity change. Fourieranalysis was used to synthesize PSV (PaleoSecularVariation) of the geomagnetic field during a reversal. (Author, shortened by G.Q.).

M3 - Dissertation

ER -