TY4-4, Gevar'am 2 Well: Late/Upper Albian - Early/Lower Cenomanian, Israel

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Baltisphareidium informal sp. 1
Hytrichophaeridium ancoriterum
Hytrichosphaera ramosa
Gonyoulucysta informal sp. 1
Hystrichokolpomo ferox
Leiosphaeridia sp. Eisenack 1958
Retitricolpites sp. Van der Hammen 1956
Angiospermae - Malpighiales - Euphorbiaceae
Tricolporopollenites sp. Thomson and Pflug 1953
unclassified
Converrucosisporites sp. Potonié and Kremp 1954
Pteridopsida
Cyathidites minor Couper 1953
Polypodiopsida - Gleicheniaceae
Gleicheniidites sp. Dettmann 1963
unclassified
Baltisphaeridium informal sp. 2 Eisenack 1958
Baltisphaeridium bitidum
Baltisphaeridium informal sp. 4 Eisenack 1958
Polysphaeridium informal sp. 1 Davey and Williams 1966
Polysphaeridium informal sp. 2 Davey and Williams 1966
Hystrichosphaeridea
Hystrichosphaera cingulatagranula
Hystrichosphaera cingulatacingula
Dinophyceae - Gonyaulacales - Gonyaulacaceae
Chytroeisphaeridia sp. Downie et al. 1963
Dinophyceae - Gonyaulacales - Goniodomaceae
Hystrichosphaeridium informal sp. 1 Deflandre 1936
Hystrichosphaeridium informal sp. 2 Deflandre 1936
Hystrichosphaeridium informal sp. 3 Deflandre 1936
Dinophyceae - Gonyaulacales
Tanyosphaeridium sp. Davey and Williams 1966
see common names

Geography
Country:Israel State/province:Southern Coastal Plain
Coordinates: 31.6° North, 34.6° East (view map)
Paleocoordinates:9.8° North, 28.7° East
Basis of coordinate:based on nearby landmark
Time
Period:Cretaceous
Key time interval:Late/Upper Albian - Early/Lower Cenomanian
Age range of interval:106.20000 - 93.90000 m.y. ago
Stratigraphy
Formation:Talme Yafe
Lithology and environment
Primary lithology:gray lithified argillaceous,carbonaceous mudstone
Lithology description: The Gevar'a m Formation occurs in the lower part of the Cretaceous sequences that was studied. It unconformably overlies limestone beds considered to be of Jurassic age (Derin, 1966). In the Gevar'am 2 well the formation consists of 942 meters of dark gray, carbonaceous, marine shales with occasional thin sandstone beds. To the east there is a rapid facies change and in the Helez area most of the marine shales grade laterally into shallow water arenaceous sediments (Shenhav, 1970), which are referred to as the Helez Formation. Correlation between the less argillaceous sediments of the Helez Formation and the shales of the Gevar'am Formation has not, as yet, been established paleontologically. In the Gevar'am 2 well, at 1500 m the Gevar'am Fm. is overlain by 700 meters of light to medium gray marine mudstone called the Talme Yafe Formation. The nature of the contact between these two formations is still an open question. The rapid vertical change from a carbonaceous shale to a light gray marlstone sequence may represent an unconformable relationship or only a rapid change in the depositional environment.
Environment:marine indet.
Taphonomy
Modes of preservation:soft parts,original sporopollenin
Size of fossils:microfossils
Collection methods and comments
Collection excludes:all microfossils
Collection methods:chemical,hydrochloric,hydroflouric,sieve
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:144147
Authorizer:C. Jaramillo Enterer:G. Doria
Modifier:G. Doria Research group:paleobotany
Created:2013-05-01 10:33:28 Last modified:2013-04-30 19:39:49
Access level:the public Released:2013-05-01 10:33:28
Creative Commons license:CC BY
Reference information

Primary reference:
45820. G. J. Brenner. 1974. Palynostratigraphy of the Lower Cretaceus Gevar'am and Talme Yafe Formations in the Gevar'am well (Southern Coastal Plain, Israel). Bulletin of the Geological Survey of Israel 59:1-27 [C. Jaramillo/G. Doria/A. Cárdenas]