Results 21 to 30 of about 2,894 (184)

El volcanismo jurásico superior de la Formación Río Damas-Tordillo (33°-35,5°S): antecedentes su sobre petrogénesis, cronología, proveniencia e implicancias tectónicas [PDF]

open access: yes, 2014
Los depósitos continentales y volcánicos de la Formación Rio Damas-Tordillo, Jurásico Superior, representan un período restringido de sedimentación continental dentro del registro mayormente marino de la Cuenca Neuquina.
Calderón, Sergio   +7 more
core   +2 more sources

High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary [PDF]

open access: yes, 2019
The numerical age of the Jurassic-Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U-Pb geochronological data around the Jurassic-Cretaceous boundary in two distinct sections from different ...
Aguirre-Urreta, Maria Beatriz   +10 more
core   +1 more source

Paleoenvironmental evolution of the southern Neuquèn basin (Argentina) during the Tithonian-Berriasian (Vaca Muerta and Picún Leufú Formations): a multi-proxy approach

open access: yesBSGF - Earth Sciences Bulletin, 2017
The Tithonian-Berriasian interval in the southern part of the Neuquén Basin is represented by the Vaca Muerta and the Picún Leufú Formations. Facies analysis and correlation of the Vaca Muerta Formation and the lower part of the Picún Leufú Formation in ...
Krim Nesma   +8 more
doaj   +1 more source

Geological evidence for fluid overpressure, hydraulic fracturing and strong heating during maturation and migration of hydrocarbons in Mesozoic rocks of the northern Neuquén Basin, Mendoza Province, Argentina [PDF]

open access: yes, 2015
International audienceIn the northern Neuquén Basin of Argentina (especially in Mendoza Province), there is strong geological evidence for fluid overpressure in the past.
Cobbold, Peter Robert   +3 more
core   +3 more sources

Inorganic geochemistry as indicator of provenance and sedimentary environment in black shales: the tithonian transgressive deposits of the Neuquén basin (Vaca Muerta Formation), Argentina. [PDF]

open access: yes, 2014
Se presenta un estudio de geoquímica inorgánica de las sedimentitas formadas durante la transgresión marina del Titoniano temprano en la Cuenca Neuquina.
Schwarz, Ernesto   +2 more
core   +3 more sources

Influence of pre-Andean history over Andean foreland deformation: structural styles in the Malargüe fold-and-thrust belt at 35ºS, Andes of Argentina [PDF]

open access: yes, 2014
We present the first complete balanced cross-section of the Argentinean Andes at 35ºS. Based on an extensive field survey and limited sub-surface information, we constructed a structural model in which both the tectonic inversion of Mesozoic normal ...
Giambiagi, Laura Beatriz   +4 more
core   +1 more source

Sedimentología e Icnología de deltas fluvio-dominados afectados por descargas hiperpícnicas de la Formación Lajas (Jurásico Medio), Cuenca Neuquina, Argentina [PDF]

open access: yes, 2015
En las áreas de Portada Covunco y Sierra de la Vaca Muerta, la Formación Lajas representa una sucesión deltaica fluvio-dominada integrada por depósitos de prodelta y frente deltaico, afectados por descargas hiperpícnicas y reelaborados por acción de ...
Bournod, Constanza Naimé   +6 more
core   +3 more sources

The relative isotopic abundance of K^(40) in terrestrial and meteoritic samples [PDF]

open access: yes, 1966
Fowler, Greenstein, and Hoyle have proposed that the inner solar system was heavily irradiated during its formation. A consequence of this proposal is that sizable differences in meteoritic and terrestrial K^(41)/K^(40) ratios are possible if the ...
Burnett, D. S.   +2 more
core   +1 more source

The Late Jurassic pterosaurs from northern Patagonia, Argentina [PDF]

open access: yes, 2013
Records of flying Jurassic reptiles are very scarce in the Southern Hemisphere. Upper Jurassic pterosaurs have been discovered in marine Tithonian sediments of the Vaca Muerta Formation, in the Neuquén Basin, Patagonia, Argentina. Only four specimens are
Brandoni, Zulma Nelida   +1 more
core   +1 more source

An Overview of Recent Developments and Understandings of Unconventionals in the Vaca Muerta Formation, Argentina

open access: yesApplied Sciences
In this article, we comprehensively reviewed Argentina’s Vaca Muerta formation, which encompasses a geological overview, advances in extraction technologies, the potential environmental impact, and economic analysis.
Xinqian Lu   +9 more
doaj   +1 more source

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