Changes in Source Areas at Neuquén Basin: Mesozoic Evolution and Tectonic Setting Based on U–Pb Ages on Zircons

Naipauer, Maximiliano; Ramos, Víctor A.

doi:10.1007/978-3-319-23060-3_3

Cited by 15 publications

(13 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Over the past ten years, the geochronology of some stratigraphic units in the Neuquén Basin has been significantly improved based on absolute U-Pb ages from igneous basement rocks and Upper Triassic-Lower Jurassic synrift deposits (see Naipauer and Ramos, 2016, for a summary) (Fig. 2).…”

Section: ■ 2 Geologic and Stratigraphic Settingmentioning

confidence: 99%

“…3A). Tunik et al (2010), and subsequently Naipauer et al (2014) and Naipauer and Ramos (2016), reviewing the same data set, assigned the prominent Early Jurassic peak in those data as representing provenance from synrift volcanic rocks within the Neuquén Basin (Precuyano Cycle). They also recognized prominent Triassic-Permian and Ordovician-Neoproterozoic age populations that they interpreted as reflecting sediment flux from the basement of the Neuquén Basin (Choiyoi Group) and from eastern foreland cratonic regions related to the Grenville, Pampean, and Famatian magmatic arcs (Fig.…”

Section: Remote Versus Nearby Source Areasmentioning

confidence: 99%

“…This marine basin was bounded by the Sierra Pintada-Las Matras-Chadileuvú blocks to the northeast and the North Patagonian Massif to the southeast. The relatively little data produced from detrital-zircon grains for the Jurassic and Early Cretaceous strata allowed previous authors to suggest a change in provenance from dominantly western (arc) sources in the Early and Late Jurassic, to an eastern-dominated (cratonic) source for the Early Cretaceous (Naipauer et al, 2014;Naipauer and Ramos, 2016). This apparent change, recorded in the Early Cretaceous strata (Agrio and Rayoso formations), was attributed to either a basin baselevel fall or, alternatively, uplift and exhumation of the eastern foreland region (Naipauer et al, 2014;Naipauer and Ramos, 2016).…”

Section: ■ 1 Introductionmentioning

confidence: 99%

See 2 more Smart Citations

U-Pb geochronology and paleogeography of the Valanginian–Hauterivian Neuquén Basin: Implications for Gondwana-scale source areas

et al. 2020

View full text Add to dashboard Cite

Sedimentary basins located at the margins of continents act as the final base level for continental-scale catchments that are sometimes located thousands of kilometers away from the basin, and this condition of exceptionally long sediment transfer zones is probably reinforced in supercontinents, such as Gondwana. One of the most prominent marine basins in southwestern Gondwana during the Jurassic and Early Cretaceous was the Neuquén Basin (west-central Argentina), but its role as a sediment repository of far-flung source areas has not been extensively considered. This contribution provides the first detailed detrital-zircon U-Pb geochronology of the Valanginian–Hauterivian Pilmatué Member of the Agrio Formation, which is combined with sedimentology and paleogeographic reconstructions of the unit within the Neuquén Basin for a better understanding of the fluvial delivery systems. Our detrital-zircon signatures suggest that Triassic–Permian zircon populations were probably sourced from the adjacent western sector of the North Patagonian Massif, whereas Early Jurassic, Cambrian, Ordovician, and Proterozoic grains were most likely derived from farther east, in the eastern sector of the North Patagonian Massif, as well as presently remote terranes such as the Saldania Belt in southern Africa. We thus propose a Valanginian–Hauterivian longitudinal delivery system that, starting in the mid-continent region of southwestern Gondwana and by effective sorting, was bringing fine-grained or finer caliber sand to the Neuquén Basin shoreline. This delivery system was probably active (though not necessarily continuously) from Early Jurassic to Early Cretaceous until finally coming to an end during the opening of the South Atlantic Ocean in the latest Early Cretaceous.

show abstract

Section: ■ 2 Geologic and Stratigraphic Settingmentioning

confidence: 99%

Section: Remote Versus Nearby Source Areasmentioning

confidence: 99%

Section: ■ 1 Introductionmentioning

confidence: 99%

See 1 more Smart Citation

U-Pb geochronology and paleogeography of the Valanginian–Hauterivian Neuquén Basin: Implications for Gondwana-scale source areas

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The sedimentary fill record comprises an Upper Triassic to lower Cenozoic succession that includes volcaniclastic, siliciclastic, carbonates and evaporites deposited in marine and continental environments. The Neuquén basin records a complex tectonic evolution, starting with an initial rift stage in the Late Triassic-Early Jurassic, followed by a thermal subsidence M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT regime in a retroarc setting during Middle Jurassic-Early Cretaceous, and ending as a foreland basin system in the Late Cretaceous-Paleogene (Manceda and Figueroa 1995;Howell, et al, 2005;Tunik et al, 2010;Naipauer and Ramos, 2016). The beginning of the foreland stage is characterized by the accumulation of more than 1000 m of fluvial, aeolian and shallow lacustrine deposits, included in the Cenomanian-Campanian Neuquén Group (Stipanicic et al, 1968;Garrido, 2010;Fennell et al, 2017).…”

Section: Geological Settingmentioning

confidence: 99%

A new narrow-gauge sauropod trackway from the Cenomanian Candeleros Formation, northern Patagonia, Argentina

Heredia

Pazos

Fernández

et al. 2019

Cretaceous Research

View full text Add to dashboard Cite

Dinosaurs are extremely abundant in the Upper Cretaceous Neuquén Group of the Neuquén Basin (Argentina). Nevertheless, while osteological remains are rich the ichnological record is more restricted. A new sauropod dinosaur trackway with five manus-pes imprint sets discovered in the Cenomanian Candeleros Formation is described here. The trackway belongs to the narrow-gauge type that is identified for the first time in the Cenomanian and possibly for the Late Cretaceous. It is preserved as concave epirelief in fine-grained sandstones from floodplain deposits. The tracks, which are large in size (average length of 98 cm), include conspicuous rims with very well-preserved symmetrical ripples on top that are documented for the first time in the track record. Due to their preservation and the absence of clear anatomical details, the trackway was not assigned to any particular ichnotaxon. Taking into account the presence of rebbachisaurid diplodocoid remains in the Candeleros Formation, the classical association of narrow-gauge trackways with diplodocoids and the inferred gleno-acetabular distance, it is suggested that the studied trackway might belong to a large-sized rebbachisaurid. The worldwide record of Cenomanian dinosaur tracks includes only a few records of sauropod tracks. Thus, this new

show abstract

“…Figura 1: Ubicación de la cuenca Neuquina, extraído del libro Growth of the Southern Andes, (Naipauer, M. y Ramos, V.A. 2016).…”

Section: Ubicación Y Marco Geológico De La Zona De Estudiounclassified

Caracterización y análisis de fracturas naturales

Torra¹

View full text Add to dashboard Cite

En el presente trabajo se propone generar un modelo geomecánico de fracturas naturales en el bloque Puesto Touquet, para optimizar los proyectos de desarrollo y exploración donde las fracturas juegan un papel importante. Para ello se realizó un análisis tectónico-estructural apoyado en trabajos publicados e interpretación de la sísmica 3D, descripción de coronas con el método FRAC de la Universidad de Texas en Austin, imágenes de pozos, geofísica, geomecánica basados en el análisis de perfiles sónicos dipolares y el modelado integral en el módulo de fracturas de Petrel©. Los resultados finales se reflejan en una visualización tridimensional de la densidad, distribución y propiedades de las fracturas de un modelo estático y que posteriormente podría ser usado para generar un modelo dinámico. El área de estudio se encuentra ubicada en el sector centro-oeste de la Dorsal de Huincul, provincia de Neuquén, a unos 7 km de la ciudad de Cutral-Co y a 60 km al oeste de la ciudad de Neuquén. Abarca una superficie aproximada de 350 km2, comprendiendo las concesiones de explotación de Puesto Touquet y El Porvenir.

show abstract

Changes in Source Areas at Neuquén Basin: Mesozoic Evolution and Tectonic Setting Based on U–Pb Ages on Zircons

Cited by 15 publications

References 64 publications

U-Pb geochronology and paleogeography of the Valanginian–Hauterivian Neuquén Basin: Implications for Gondwana-scale source areas

U-Pb geochronology and paleogeography of the Valanginian–Hauterivian Neuquén Basin: Implications for Gondwana-scale source areas

A new narrow-gauge sauropod trackway from the Cenomanian Candeleros Formation, northern Patagonia, Argentina

Caracterización y análisis de fracturas naturales

Contact Info

Product

Resources

About