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Río Limay Subgroup

Coordinates: 39°24′S 69°12′W / 39.4°S 69.2°W / -39.4; -69.2
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Río Limay Subgroup
Stratigraphic range: Early Cenomanian-Early Turonian
~98–91 Ma
TypeGeological formation
Unit ofNeuquén Group
Sub-unitsCandeleros, Huincul & Lisandro Formations
UnderliesRío Neuquén Subgroup
OverliesLohan Cura Formation
ThicknessUp to 625 m (2,051 ft)
Lithology
PrimarySandstone
OtherSiltstone, claystone
Location
Coordinates39°24′S 69°12′W / 39.4°S 69.2°W / -39.4; -69.2
Approximate paleocoordinates46°30′S 45°30′W / 46.5°S 45.5°W / -46.5; -45.5
RegionMendoza, Neuquén & Río Negro Provinces
Country Argentina
ExtentNeuquén Basin
Type section
Named forLimay River
Río Limay Subgroup is located in Argentina
Río Limay Subgroup
Río Limay Subgroup (Argentina)

The Río Limay Subgroup is a geological unit of the Neuquén Group in the Neuquén Basin of Neuquén, Mendoza and Río Negro Provinces, northern Patagonia, Argentina. The strata date back to the Late Cretaceous (Early Cenomanian to Early Turonian. The Río Limay Subgroup overlies the Lohan Cura Formation, separated by an unconformity dated to 98 Ma.[1] Dinosaur remains are among the fossils that have been recovered from the formations it contains.[2]

Having previously been considered a distinct formation, the Río Limay Subgroup is now considered a member of the larger Neuquén Group, and itself contains several specific geological formations (from youngest to oldest):

Fossil content

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See also

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References

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  1. ^ Leanza et al., 2004, p.63
  2. ^ Weishampel et al., 2004, pp. 600-604

Bibliography

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  • Leanza, H.A.; Apesteguia, S.; Novas, F.E.; De la Fuente, M.S. (2004), "Cretaceous terrestrial beds from the Neuquén Basin (Argentina) and their tetrapod assemblages", Cretaceous Research, 25: 61–87, Bibcode:2004CrRes..25...61L, doi:10.1016/j.cretres.2003.10.005, retrieved 2019-02-16
  • Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21