Английская Википедия:Coquimbo Formation
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Шаблон:Short description Шаблон:Infobox rockunit Coquimbo Formation (Шаблон:Lang-es) is a Miocene to Middle Pleistocene sedimentary formation located in Coquimbo Region in Norte Chico, Chile. The lowermost unit belongs to the lower Miocene, with the third-deepest unit dated at 11.9 ± 1.0 Ma. The uppermost unit of the formation is estimated at 1.2 Ma. In the area of Tongoy, the Coquimbo Formation was deposited in an ancient bay that was formed in a graben or half-graben, with a normal fault dipping east. Sea level changes during the Holocene have caused erosion to cut several marine terraces into the formation.[1]
Fossil content
The following fossils have been found in the formation:
SALMA | Group | Fossils | Notes |
---|---|---|---|
style="background-color: Шаблон:Period color;" rowspan=3 | Montehermosan | Mammals | Delphinus domeykoi, Megaptera hubachi, Pliopontos sp., ?Squalodon sp., Balaenidae indet. | Шаблон:Center |
Birds | cf. Palaeospheniscus sp., Spheniscus sp., Diomedeidae indet., Spheniscidae indet. | Шаблон:Center | |
Fish | Carcharodon carcharias | Шаблон:Center | |
style="background-color: Шаблон:Period color;" | Mayoan | Cosmopolitodus hastalis | Шаблон:Center |
See also
References
Further reading
- C. Acosta Hospitaleche, J. Canto, and C. P. Tambussi. 2006. Pingüinos (Aves, Spheniscidae) en Coquimbo (Mioceno Medio-Plioceno Tardio), Chile y su vinculación con las corrientes oceánicas. Revista Española de Paleontología 21(1):115-122
- Шаблон:Cite LSA
Категории:
- Английская Википедия
- Geologic formations of Chile
- Miocene Series of South America
- Pliocene Series of South America
- Neogene Chile
- Pleistocene Chile
- Mayoan
- Montehermosan
- Conglomerate formations
- Sandstone formations
- Siltstone formations
- Tidal deposits
- Paleontology in Chile
- Geology of Coquimbo Region
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