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{{Short description|Geologic formation in Argentina}}
{{Infobox rockunit {{Infobox rockunit
| name = Yacoraite Formation | name = Yacoraite Formation
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| unitof = ] | unitof = ]
| subunits = Amblayo, Güemes, Alemanía & Juramento Members | subunits = Amblayo, Güemes, Alemanía & Juramento Members
| underlies = ] & ]s | underlies = ], ] & ]s
| overlies = ] | overlies = ]
| thickness = | thickness =
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| lat_deg = -23.5 | lat_deg = -23.5
| lon_deg = -65.4 | lon_deg = -65.4
| mark = Greenandorange pog.svg | mark = Green-orange pog.svg
| marksize = 12 | marksize = 12
}} }}
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== See also == == See also ==
{{Portal|Argentina|Geology|Paleontology|Dinosaurs|Cretaceous|Prehistory of South America}}
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* ], contemporaneous fossiliferous formation of Antarctica


== References == == References ==
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=== Bibliography === === Bibliography ===
* {{cite LSA |last=Leonardi |first=Giuseppe |year=1994 |title=Annotated Atlas of South America Tetrapod Footprints (Devonian to Holocene) with an appendix on Mexico and Central America |url=https://www.researchgate.net/publication/309643073_Annotated_Atlas_of_South_America_Tetrapod_Footprints_Devonian_to_Holocene_with_an_appendix_on_Mexico_and_Central_America |publisher=Ministerio de Minas e Energia - Companhia de Pesquisa de Recursos Minerais, Geological Service of Brazil |pages=1–248 |accessdate=2019-03-25}} * {{citation |last=Leonardi |first=Giuseppe |year=1994 |title=Annotated Atlas of South America Tetrapod Footprints (Devonian to Holocene) with an appendix on Mexico and Central America |url=https://www.researchgate.net/publication/309643073 |publisher=Ministerio de Minas e Energia - Companhia de Pesquisa de Recursos Minerais, Geological Service of Brazil |pages=1–248 |accessdate=2019-03-25}}
* {{cite LSA |last=Marquillas |first=Rosa |last2=del Papa |first2=Cecilia |last3=Sabino |first3=Ignacio |last4=Heredia |first4=Jorge |year=2003 |title=Prospección del límite K/T en la cuenca del Noroeste, Argentina - The K/T boundary prospecting in the Northwest Basin, Argentina |url=https://www.researchgate.net/publication/242245610_Prospeccion_del_limite_KT_en_la_cuenca_del_Noroeste_Argentina |journal=] |volume=58 |pages=271-274 |accessdate=2019-03-25}} * {{citation |last1=Marquillas |first1=Rosa |last2=del Papa |first2=Cecilia |last3=Sabino |first3=Ignacio |last4=Heredia |first4=Jorge |year=2003 |title=Prospección del límite K/T en la cuenca del Noroeste, Argentina - The K/T boundary prospecting in the Northwest Basin, Argentina |url=https://www.researchgate.net/publication/242245610 |journal=] |volume=58 |pages=271–274 |accessdate=2019-03-25}}
* {{cite LSA |last=] |first=David B. |last2=] |first2=Peter |last3=] (eds.) |first3=Halszka |year=2004 |title=The Dinosauria, 2nd edition |url=https://books.google.com.co/books/about/The_Dinosauria.html?id=vtZFDb_iw40C&redir_esc=y |publisher=Berkeley: University of California Press |pages=1–880 |accessdate=2019-02-21}}{{ISBN|0-520-24209-2}} * {{citation |last1=Weishampel |first1=David B. |author2-link=Peter Dodson |last2=Dodson |first2=Peter |author3-link=Halszka Osmólska |last3=Osmólska |first3=Halszka |year=2004 |title=The Dinosauria, 2nd edition |url=https://books.google.com/books?id=vtZFDb_iw40C |publisher=Berkeley: University of California Press |pages=880 p |accessdate=2019-02-21 |isbn=0-520-24209-2 |author1-link=David B. Weishampel }}


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Latest revision as of 22:53, 3 July 2024

Geologic formation in Argentina
Yacoraite Formation
Stratigraphic range: Maastrichtian-Danian
TypeGeological formation
Unit ofSalta Group
Sub-unitsAmblayo, Güemes, Alemanía & Juramento Members
UnderliesMealla, Olmedo & Tunal Formations
OverliesLecho Formation
Lithology
PrimarySandstone
OtherLimestone
Location
Coordinates23°30′S 65°24′W / 23.5°S 65.4°W / -23.5; -65.4
Approximate paleocoordinates26°06′S 51°54′W / 26.1°S 51.9°W / -26.1; -51.9
RegionJujuy & Salta Provinces
Country Argentina
ExtentSalta Basin
Type section
Named forYacoraite village, Tilcara Department
Yacoraite Formation is located in ArgentinaYacoraite FormationYacoraite Formation (Argentina)

The Yacoraite Formation is a largely Mesozoic geologic formation. The deposits of this formation mainly date from the Maastrichtian of the Upper Cretaceous, but the Cretaceous–Paleogene boundary (K–T boundary) runs right through this formation near its top, and the uppermost parts are consequently from the Danian (Lower Paleocene). It was probably deposited around the intertidal zone, as the sedimentary rocks of this formation alternate according to sea level changes between deposits of muddy beaches and of shallow ocean.

Fossil content

Dinosaur remains are among the fossils that have been recovered from the formation.

Well-preserved dinosaur footprints assigned to Hadrosaurichnus australis have been found in this formation, as were fossil eggs, stromatolites and the Mesozoic palynomorph Aquilapollenites. 

Other fossils recovered from the formation are:

Ichnofossils

See also

References

  1. ^ Marquillas et al. (2003)
  2. Weishampel et al. (2004: pp.517-607)
  3. ^ Leonardi, 1994, p.30
  4. ^ Leonardi, 1994, p.79

Bibliography

Categories: