Loc. 20 - Hab Chowki (Gaj Fm): Early/Lower Miocene, Pakistan
collected by Iqbar 1966
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Ampullinidae
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Globularia cf. gibberosa
(Grateloup 1847)
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Gastropoda
- Neogastropoda
- Volutidae
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Lyria cf. jugosa
(Sowerby 1839)
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recombined as Lyria (Harpeola) jugosa | |||||||
Volutospina sindiensis
(Vredenburg 1925)
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original and current combination Athleta (Volutospina) sindiensis | |||||||
Gastropoda
- Neogastropoda
- Olividae
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Ancilla (Sparella) indica
Vredenburg 1925
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recombined as Ancilla indica | |||||||
Oliva (Strephona) australis
(Duclos 1835)
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Gastropoda
- Neogastropoda
- Conidae
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Conus (Lithoconus) ineditus
(Michelotti 1861)
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea latimarginata
Vredenburg 1908
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Bivalvia
- Pectinida
- Pectinidae
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Pecten (Amussiopecten) labadyei
(d'Archaic and Haime 1853)
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Bivalvia
- Cardiida
- Veneridae
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Venus (Antigona) mekranica
Vredenburg 1928
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recombined as Venus mekranica | |||||||
see common names |
Geography
Country: | Pakistan |
Coordinates: | 25.0° North, 66.9° East (view map) |
Paleocoordinates: | 19.3° North, 66.3° East |
Basis of coordinate: | stated in text |
Geographic resolution: | outcrop |
Time
Period: | Neogene | Epoch: | Miocene |
10 m.y. bin: | Cenozoic 5 | ||
Key time interval: | Early/Lower Miocene | ||
Age range of interval: | 23.03000 - 15.98000 m.y. ago |
Stratigraphy
Formation: | Gaj | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Gaj Fm, which conformably overlies the Nari Fm (Oligocene), and is unconformably overlain by the Nagri Fm (Late Miocene-Early Pliocene). THICKNESS: Ranges between 615-1384 m. AGE: Iqbal (1980) is inconsistent in stating age, with Late Miocene in text, but Early Miocene (Aquitanian) in figures. An Early Miocene age is assigned. STRATIGRAPHIC POSITION: Unknown position within Gaj Fm. |
Lithology and environment
Primary lithology: | ferruginous,gypsiferous,brown,gray,green,red poorly lithified argillaceous,sandy "shale" |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Shale, with subordinate sandstone and limestone. Shale is olive green, greenish-grey, purple, red, and brown, soft, clayey, partly gypsiferous, in places sandy and nodular. LITHIFICATION: Poorly lithified, on the basis of facies description. | |
Environment: | offshore |
Geology comments: ENVIRONMENT: Shallow marine siliciclastic on the basis of 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 | ||
Collectors: | Iqbar | Collection dates: | 1966 |
Collection method comments: COLLECTOR: M. W. A. Iqbar (1966). REPOSITORY: Geological Survey of Pakistan. | |||
Taxonomic list comments:COVERAGE: Exhaustive for gastropod and bivalvia. NOMENCLATURE: Authoritative publication with relatively modern nomenclature, and consistent subgenus and species-resolution identifications. |
Metadata
Database number: | 77457 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2008-01-12 18:42:49 | Last modified: | 2013-11-25 13:37:23 |
Access level: | authorizer only | Released: | 2009-01-12 18:42:49 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
26212. | M. W. A. Iqbal. 1980. Oligo-Miocene bivalves and gastropods from Kirthar Province, lower Indus Basin, Pakistan. Records of the Geological Society of Pakistan 51:1-59 [A. Hendy/A. Hendy] |