Carta Geológica 133-134, Locality 17: Late/Upper Miocene, Chile
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Globorotaliidae
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Neogloboquadrina pachyderma
(Ehrenberg 1861)
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Buliminidae
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Bulimina elongata
d'Orbigny 1846
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see common names |
Geography
Country: | Chile | State/province: | Atacama |
Coordinates: | 29.0° South, 71.4° West (view map) | ||
Paleocoordinates: | 29.3° South, 69.4° West | ||
Basis of coordinate: | stated in text | ||
Geographic resolution: | local area |
Time
Period: | Neogene | Epoch: | Miocene |
10 m.y. bin: | Cenozoic 6 | ||
Key time interval: | Late/Upper Miocene | ||
Age range of interval: | 11.63000 - 5.33300 m.y. ago |
Stratigraphy
Formation: | Formación Coquimbo | ||||
Stratigraphy comments: Formación Coquimbo (Mioceno Medio-Pleistoceno Inferior) |
Lithology and environment
Primary lithology: | poorly lithified sandy,conglomeratic sandstone |
Secondary lithology: | poorly lithified sandy,calcareous sandstone |
Lithology description: Depósitos estratificados, medianamente consolidados, de areniscas finas a medias de color amarillo a gris, con intercalaciones de limos, conglomerados y coquinas. Esta unidad aflora en la localidad de Choros Bajos y presenta espesores cercanos a 12 m, sin base expuesta. En este lugar, engrana lateralmente con las gravas fluvialesde la FormaciónConfluenciay en parte son cubiertospor ellas y por niveles calcáreos de los depósitos litorales inactivos (PlHl1). | |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | general faunal/floral analysis |
Metadata
Database number: | 221852 | ||
Authorizer: | M. Rivadeneira | Enterer: | S. Araya |
Created: | 2021-08-27 17:36:03 | Last modified: | 2021-08-27 17:36:03 |
Access level: | the public | Released: | 2021-08-27 17:36:03 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
77643. | C. Creixell, M. Ortiz, and C. Arevalo. 2012. Geología del Área Carrizalillo-El Tofo, Regiones de Atacama y Coquimbo. [M. Rivadeneira/S. Araya] |