The Río Neuquén Subgroup is a geological
subgroup
In group theory, a branch of mathematics, a subset of a group G is a subgroup of G if the members of that subset form a group with respect to the group operation in G.
Formally, given a group (mathematics), group under a binary operation  ...
in the
Neuquén Basin
Neuquén Basin () is a sedimentary basin covering most of Neuquén Province in Argentina. The basin originated in the Jurassic and developed through alternating continental and marine conditions well into the Tertiary. The basin bounds to the wes ...
,
Neuquén Province
Neuquén () is a Provinces of Argentina, province of Argentina, located in the west of the country, at the northern end of Patagonia. It borders Mendoza Province to the north, Rio Negro Province to the southeast, and Chile to the west. It also me ...
, Argentina, whose strata date back to the
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''cre ...
. The subgroup, formerly defined as a formation, is the middle unit of the
Neuquén Group and contains the
Plottier
Plottier is a city located in the Confluencia Department, in Neuquén Province, Argentina.
The population is 40.000 inhabitants. It is about 15 km from Neuquén City, which turns this city into an important place for the population.
Plottier ...
,
Sierra Barrosa Formation
The Sierra Barrosa Formation is a geologic formation of the Neuquén Basin in the northern Patagonian provinces of Mendoza Province, Mendoza and Neuquén Province, Neuquén. The formation dates to the Late Cretaceous, Coniacian, middle to late Con ...
,
[Garrido, 2011, p.237] Los Bastos Formation,
[Garrido, 2011, p.236] and
Portezuelo Formations.
[Balgord & Carapa, 2014, p.6][Balgord, 2017, p.455][Lebinson et al., 2018, p.252] The subgroup overlies the
Río Limay Subgroup and is overlain by the
Río Colorado Subgroup.
[Leanza et al., 2004, p.63] Dinosaur remains are among the fossils that have been recovered from the formation.
[Weishampel, 2004, pp. 600-604]
Fossil content
See also
*
List of dinosaur-bearing rock formations
This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented.
* List of stratigraphic units with dinosaur body fossils
* List of stratigraphic units with dinosaur trace fossils
** ...
References
Bibliography
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{{DEFAULTSORT:Rio Neuquen Subgroup
Geologic formations of Argentina
Neuquén Group
Upper Cretaceous Series of South America
Cretaceous Argentina
Coniacian Stage
Turonian Stage
Cenomanian Stage
Shale groups
Sandstone groups
Fluvial deposits
Fossiliferous stratigraphic units of South America
Paleontology in Argentina
Geology of Mendoza Province
Geology of Neuquén Province
Geology of Río Negro Province
Neuquen