Go 12-14, Gorodische locality on the Kuibyshev Reservoir, Volga River (Jurassic of Russian Federation)

Where: Russian Federation (54.6° N, 48.4° E: paleocoordinates 49.1° N, 50.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Tithonian (152.1 - 145.0 Ma)

• Go 12-14 - 0.20 m; Virgatus Zone; Middle Volgian, 'Traditionally, the Volgian was considered to be equivalent of the Tithonian stage. However, many data contradict these correlations (Sey and Kalacheva, 1993).'

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

• The Volgian formation is studied in the shore of the Kuibyshev Reservoir, between Gorodische and Dubky. The upper Volgian formation is also detailed at Kashpir, 4 km south of Syzran, on the Kuibyshev Reservoir. It corresponds to 18 m of terrigenous deposits, argillaceous in the lower part and sandy in the upper part, with intercalations of four major black shale horizons.

Size class: macrofossils

Primary reference: P. Hantzpergue, F. Baudin, V. Mitta, A. Olferiev, and V. A. Zakharov. 1998. The Upper Jurassic of the Volga basin: ammonites biostratigraphy and correlations with standard European zonations. C. R. Acad. Sci. Paris, Sciences de la terre et des planetes 326:633-640 [M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 59185: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 21.03.2006

Creative Commons license: CC BY (attribution)