Loc. 13 - Thano Bula Khan (Nari Fm): Early/Lower Oligocene, Pakistan
collected by Iqbar 1966
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Ampullinidae
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Euspirocrommium cf. oweni
(d'Archiac and Haime 1854)
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| recombined as Pachycrommium oweni | |||||||
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Bivalvia
- Cardiida
- Veneridae
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Clementia papyracea
Gray 1825
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| recombined as Clementia (Clementia) papyracea | |||||||
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Bivalvia
- Pectinida
- Pectinidae
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Pecten (Amussiopecten) labadyei
(d'Archaic and Haime 1853)
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea angulata
Sowerby 1840
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| recombined as Crassostrea angulata | |||||||
| see common names | |||||||
Geography
| Country: | Pakistan |
| Coordinates: | 25.4° North, 67.8° East (view map) |
| Paleocoordinates: | 16.0° North, 65.5° East |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Early/Lower Oligocene | ||
| Age range of interval: | 33.90000 - 27.82000 m.y. ago |
Stratigraphy
| Formation: | Nari | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Nari Fm, which unconformably overlies the Kirthar Fm (Lutetian), and is conformably overlain by the Gaj Fm (Burdigalian). THICKNESS: Ranges between 768-1846 m. AGE: On the basis of faunal evidence, the Nari Fm is considered to be Late Oligocene-Early Miocene in age (Khan 1968, Hunting Survey Corporation, 1960). Iqbal (1980) is inconsistent, however, and figures the formation as ranging from Rupelian-Aquitanian. As collection is described from the lower Nari, and to be consistent with Vredenburg, a Rupelian age is assigned. STRATIGRAPHIC POSITION: Bed within lower Nari Fm. | |||||
Lithology and environment
| Primary lithology: | "cross stratification",medium,ferruginous,brown,gray,green,white poorly lithified calcareous sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Sandstone, with subordinate shale, limestone and occasionally conglomerate. Sandstone is grey, greenish-grey, brown or white, medium-coarsely-grained, or gritty, thick-bedded to massive, ferruginous coatings, sandstone is calcareous, hard, but in places soft and crumbly, crossbedding and ripple marks are common. LITHIFICATION: | |
| Environment: | coastal indet. |
| 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: | 77453 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-01-12 18:26:42 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2009-01-12 18:26:42 |
| 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] |