Tazareh Section, Alburz Mts, Transgressive lag c: Late/Upper Bajocian, Iran

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Brachiopoda indet. Cuvier 1805
Cephalopoda - Belemnitida
Belemnitida indet. Zittel 1895
Bivalvia - Ostreida - Ostreidae
Ostreidae indet. Rafinesque 1815
Bivalvia - Pectinida - Limidae
Ctenostreon sp. Eichwald 1862
see common names

Geography
Country:Iran
Coordinates: 36.4° North, 54.5° East (view map)
Paleocoordinates:14.0° South, 47.6° East
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Jurassic Epoch:Middle Jurassic
Stage:Bajocian 10 m.y. bin:Jurassic 4
Key time interval:Late/Upper Bajocian
Age range of interval:168.60000 - 168.20000 m.y. ago
Stratigraphy
Formation:Shemshak
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:bioturbation,fine,medium lithified sandy grainstone
Lithology description: Fine- to medium-grained fine-sandy bio-grainstone with a partly micritic, partly sparitic matrix. The quartz grains are angular; finely disseminated iron oxide is common.
Environment:shallow subtidal indet.
Glacial or sequence phase:transgressive
Geology comments: ...record transgressive event that quickly removed the sediment from the high-energy zone where, due to constant reworking, it would have gained a much greater textural and compositional maturity
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:141262
Authorizer:M. Aberhan Enterer:T. Schossleitner
Research group:marine invertebrate
Created:2013-03-23 05:42:34 Last modified:2013-03-22 13:42:34
Access level:the public Released:2013-03-23 05:42:34
Creative Commons license:CC BY
Reference information

Primary reference:
45909. F. T. Fürsich, M. Wilemsen, K. Seyed-Emami, F. Cecca, and M. R. Majidifard. 2005. The upper Shemshak Formation (Toarcian–Aalenian) of the Eastern Alborz (Iran): Biota and palaeoenvironments during a transgressive–regressive cycle. Fazies 51:365-384 [M. Aberhan/T. Schossleitner/T. Schossleitner]