Calpionellid and ammonite biostratigraphy of uppermost Jurassic to Lower Cretaceous sedimentary rocks from the Leube quarry (Northern Calcareous Alps, Salzburg, Austria) (original) (raw)

New calpionellid and ammonite data from the Leube quarry in combination with microfacies and lithology analyses allow a new and precise biostratigraphy in Upper Tithonian and Lower Cretaceous hemipelagic sedimentary rocks of the Northern Calcareous Alps south of Salzburg (Austria). The Upper Tithonian Oberalm Formation is dated by the first occurrence of Calpionella alpina (Lorenz, 1902), Crassicollaria massutiniana (Colom, 1948) and Crassicollaria intermedia (Durand-Delga, 1957) (Crassicollaria intermedia Subzone). In the Upper Tithonian hemipelagic radiolarian wackestones several clastic cycles are intercalated, consisting of breccia beds (mass-flow deposits) and turbidites with resedimented litho-and bioclastic material from nearby carbonate platforms (Barmstein Limestone). The change from white, hemipelagic limestones to greenish, marly limestones with marl intercalations takes place in between the Upper Tithonian and Lower Berriasian part of the Oberalm Formation and is dated b...

Jurassic–Cretaceous radiolarian-bearing strata from the Gresten Klippen Zone and the St. Veit Klippen Zone (Wienerwald, Eastern Alps, Austria): Implications for stratigraphy and paleogeography

Austrian Journal of Earth Sciences

Two sections of the klippen zones in the Wienerwald area have been investigated for their stratigraphy: (1) The Gern section of the Main Klippen Zone, a part of the Gresten Klippen Zone, and (2) the St. Veit Klippen Zone in the Lainz Tunnel and the neighboring outcrops in western Vienna. New biostratigraphic data are based on radiolaria from siliceous intervals and a few findings of calcareous nannofossils from marlstones. In the Gresten Klippen Zone, radiolarian assemblages from limestones of the Gern locality indicate a middle Oxfordian to early Kimmeridgian age of the Scheibbsbach Formation. Radiolarian and nannofossil data from the St. Veit Klippen Zone in the Lainz railway tunnel locality, as well as correlated outcrops from the Lainzer Tiergarten and the Gemeindeberg in the southwest of Vienna, indicate the presence of mainly Bajocian to lower Oxfordian red radiolarites and cherts (Rotenberg Formation). Siliceous, grey limestones and cherts of the Fasselgraben Formation range ...

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MANDL, G.W., DULAI, A., SCHLÖGL, J., SIBLÍK, M., SZABÓ, J., SZENTE, I. & VÖRÖS, A. (2010): First results on Stratigraphy and Faunal Content of the Jurassic between Bad Mitterndorf and Toplitzsee (Salzkammergut, Austria). – Abhandlungen der Geologischen Bundesanstalt, 65: 77-134.