Unit VII - Volga River composite section (Barremian): Barremian, Russian Federation

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Belemnitida
Praeoxyteuthis hibolitiformis
Praeoxyteuthis jasikofiana
Praeoxyteuthis sp.
Bivalvia - Pectinida - Pectinidae
Mclearnia imperialis
see common names

Geography
Country:Russian Federation
Coordinates: 54.2° North, 48.4° East (view map)
Paleocoordinates:47.3° North, 50.6° East
Basis of coordinate:stated in text
Geographic resolution:local area
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Barremian 10 m.y. bin:Cretaceous 2
Key time interval:Barremian
Age range of interval:129.40000 - 125.00000 m.y. ago
Stratigraphy
Local bed:44 m
Local order:bottom to top
Regional section:Volga River
Stratigraphic resolution:group of beds
Stratigraphy comments: No lithostratigraphic data reported. Collection from 5-12 m thick claystone, between 39 and 48 m above the base of the composite collection. This unit is witin the Early Barremian part of the succession.
Lithology and environment
Primary lithology:bioturbation,fine,glauconitic,green lithified sandstone
Secondary lithology:black lithified silty claystone
Includes fossils?Y
Includes fossils?Y
Lithology description: Rhythmic alteration of bioturbated greenish fine glauconite-quartz sandstones with SG surfaces at the base and black silty claystones.
Environment:marine indet.
Geology comments: No paleoenvironmental data reported.
Taphonomy
Modes of preservation:body,cast,mold/impression,recrystallized,replaced with silica
Size of fossils:macrofossils
Preservation of anatomical detail:poor
Collection methods and comments
Collection methods:selective quarrying,surface (float),surface (in situ),field collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: Figured material is deposited in the Museum of the Earth of the Moscow State University, Russia (MSU); some material is also reposited in the Dept of Geology and Paleontology at the University of Hannover, Germany (SGPI).
Taxonomic list comments:Modern nomenclatural usage. Includes all faunal group.
Metadata
Database number:57133
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2005-12-03 20:16:35 Last modified:2013-11-25 13:37:23
Access level:the public Released:2005-12-03 20:16:35
Creative Commons license:CC BY
Reference information

Primary reference:

15436. E. J. Baraboshkin and J. Mutterlose. 2004. Correlation of the Barremian belemnite successions of northwest Europe and the Ulyanovsk Saratov area (Russian Platform). Acta Geologica Polonica 54(4):499-510 [A. Miller/A. Hendy/A. Hendy]