M-9, Cerro Buque [Pisco Fm]: Middle Miocene, Peru
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes
- Carcharhiniformes
- Carcharhinidae
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Galeocerdo cf. contortus
Gibbes 1847
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recombined as Physogaleus contortus | |||||||
see common names |
Geography
Country: | Peru |
Coordinates: | 14.6° South, 75.7° West (view map) |
Paleocoordinates: | 15.2° South, 72.4° West |
Basis of coordinate: | stated in text |
Geographic resolution: | outcrop |
Time
Period: | Neogene | Epoch: | Miocene |
10 m.y. bin: | Cenozoic 5 | ||
Key time interval: | Middle Miocene | ||
Age range of interval: | 15.97000 - 11.60800 m.y. ago |
Stratigraphy
Formation: | Pisco | ||||
Local section: | Cerro Buque | Local bed: | 6 m | ||
Local order: | bottom to top | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Pisco Fm, which regionally, unconformably overlies the Chilcatay Fm (late Oligocene-early Middle Miocene). AGE: early Middle Miocene to Late Pliocene on the basis of K/Ar dates, siliceous microfossil zonation, and molluscan biostratigraphy supports. Stated in text to be of Middle Miocene age. STRATIGRAPHIC POSITION: From top of section. |
Lithology and environment
Primary lithology: | sandy siltstone |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: Not stated in text. | |
Environment: | coastal indet. |
Geology comments: ENVIRONMENT: Not discussed in text, but appears to be from relatively shallow marine siliciclastic setting. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | paleoecologic analysis |
Collection method comments: COLLECTOR: Not stated in text. REPOSITORY: Unknown. | |
Taxonomic list comments:COVERAGE: Focused on chondrichthyans, but including bivalves and gastropods. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature, and species-resolution taxonomic assignments. |
Metadata
Database number: | 113244 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2011-07-24 05:18:11 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2011-07-24 05:18:11 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
36761. | A. Alván, J. Apolín, and C. Chacaltana. 2004. Los dientes de Seláceos (Condrichthyies) y su aplicaión estratigráfica en Las Lomas de Ullujaya (Ica, Perú). XIII Congreso Peruano de Geología. Resúmenes Extendidos 595-598 [A. Hendy/A. Hendy/A. Hendy] |