Bed 3 - Vindobonian Marl (Chokrakian): Middle Miocene, Iran
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Opisthobranchia
- Retusidae
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Cylichnina aff. melitopolitana
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| spelled with current rank as Retusa (Cylichnina) | |||||||
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Gastropoda
- Neogastropoda
- Buccinidae
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Buccinum sp.
Linnaeus 1758
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Bivalvia
- Arcida
- Arcidae
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Arca sp.
Linnaeus 1758
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Bivalvia
- Pectinida
- Pectinidae
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Chlamys aff. pertinax
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Chlamys sp.
Röding 1798
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Bivalvia
- Mytilida
- Crenellidae
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Musculus naviculoides
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Musculus sp.
Roding 1798
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Bivalvia
- Pholadida
- Pholadidae
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Barnea sp.
Leach 1826
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Bivalvia
- Pholadida
- Corbulidae
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Corbula gibba
(Oliva 1792)
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| recombined as Corbula (Varicorbula) gibba | |||||||
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Bivalvia
- Cardiida
- Veneridae
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Tapes taurica
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Tapes sp.
Mühlfeld 1811
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Bivalvia
- Cardiida
- Cardiidae
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Cardium hispidiformis
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Cardium facetum
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Cardium paucicostatum
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Cardium centimplanum
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| see common names | |||||||
Geography
| Country: | Iran |
| Coordinates: | 36.0° North, 51.2° East (view map) |
| Paleocoordinates: | 35.5° North, 50.2° East |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Middle Miocene | ||
| Age range of interval: | 15.98000 - 11.63000 m.y. ago |
Stratigraphy
| Formation: | Vindobonian Marl | ||||
| Local section: | Tarud River | Local bed: | 145 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Vindobonian Marl, which overlies unnamed Paleocene strata, and is overlain by the "Karagan" Spaniodontella bed. THICKNESS: From unit of 40-50 m thick, within section that totals ~375 m. AGE: Chokrakian (Middle Miocene). STRATIGRAPHIC POSITION: From bed 3 (upper of two units in the Vindobonian Marl. | |||||
Lithology and environment
| Primary lithology: | concretionary,gray,green poorly lithified sandy claystone |
| Secondary lithology: | concretionary,gray,green poorly lithified sandy marl |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Claystone and marl, greenish grey, nodular; and sandstone, calcareous, vert fine-grained, reddish-brown, thinly laminated, thick-bedded; containing abundant fossils. LITHIFICATION: Poorly-lithified, on the basis of presence of concretions. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Shallow marine siliciclastic environment, possibly nearshore based on faunal composition. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: COLLECTOR: Not stated, presumbaly P. E. Süssli. REPOSITORY: Not stated, presumably Geological Survey of Iran. | |
| Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Antiquated, but mostly assigned to species level. | |
Metadata
| Database number: | 77195 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2007-12-30 09:35:21 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2008-12-30 09:35:21 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26131. | P. E. Süssli. 1976. The Geology of the Lower Haraz Valley area, Central Alborz, Iran. Geological Society of Iran Report 38 [A. Hendy/A. Hendy] |