Results 1 to 10 of about 3,474 (111)
When maize is not the first choice: advances in paleodietary studies in the Archaeological Site Río Doncellas (Jujuy, Argentina) [PDF]
Anthropological Review, 2016 In this work we present new values of stable isotopes of carbon (δ13Cco and δ13Cap) and nitrogen (δ15N) measured in a sample of 13 human individuals found in the Río Doncellas Archaeological Site (Late Period or Regional Developments, ca. 1000 AD-1450 AD)
Galván Violeta A. Killian +2 more
doaj +2 more sources
Geocronología isotópica de rocas graníticas de la Zona Centro-Ibérica: comparación de metodologías [PDF]
Estudios Geologicos, 2010 En el plutón de Castelo Branco, se distinguen cinco granitoides, dispuestos concéntricamente de núcleo a borde del plutón. Las edades U-Pb-Th obtenidas en cristales de monacita por microsonda electrónica en estos granitoides son similares entre sí y ...
I. M.H.R. Antunes +2 more
doaj +5 more sources
Influence of a biohermal belt on the lacustrine sedimentation of the Cañadón Asfalto Formation (Upper Jurassic, Chubut province, Southern Argentina) [PDF]
Geologica Acta, 2005 The Upper Jurassic Cañadón Asfalto Formation (Cañadón Asfalto Basin, Patagonia Argentina), consists mainly of carbonate deposits accumulated in hydrologically closed lakes, which were especially sensitive to rainfall changes.
Nora Graciela Cabaleri, Claudia Armella
doaj +5 more sources
Basin Research, Volume 33, Issue 6, Page 3102-3136, December 2021., 2021 We reconstruct the fluid flow history of a portion of the inverted Pyrenean rift, the Upper Pedraforca thrust sheet, from the Mesozoic extension to the Alpine orogeny. The results reveal a heterogeneous fluid system, with increasing meteoric water influence during the Eocene‐Oligocene compression.
David Cruset +6 more
wiley +1 more source
Geofluids, Volume 2020, Issue 1, 2020., 2020 Petrographic and geochemical analyses (δ18O, δ13C, 87Sr/86Sr, clumped isotopes, and elemental composition) coupled with field structural data of synkinematic calcite veins, fault rocks, and host rocks are used to reconstruct the episodic evolution of an outstanding exposed thrust zone in the Southern Pyrenees and to evaluate the fault behavior as a ...
Daniel Muñoz-López +6 more
wiley +1 more source
A new limit for the NW Río de la Plata Craton Border at about 24°S (Argentina) detected by Magnetotellurics [PDF]
, 2015 Old South American structures constitute a puzzle where the Río de la Plata Craton is the most important clue in the assembly of SW Gondwana. The present study is aimed at characterizing the western border of the Río de la Plata Craton on the basis of ...
Barcelona, Hernan +4 more
core +1 more source
Sagvntum, 2011 Los recientes trabajos geoarqueológicos llevados a cabo en el tramo final del rio Millars (Castelló), concretamente en la zona próxima a su desembocadura, han proporcionado datos geomorfológicos y geocronológicos de interés.
Josep A. Casabó Bernad +5 more
doaj +1 more source
Electrical conductivity of the Pampean Shallow Subduction Region of Argentina near 33 S: evidence for a slab window [PDF]
, 2013 We present a three-dimensional (3-D) interpretation of 117 long period (20–4096 s) magnetotelluric (MT) sites between 31°S and 35°S in western Argentina.
Booker, John R. +4 more
core +1 more source
Revista Mexicana de Ciencias Geológicas, 2015 En el noreste de México, capas rojas y rocas volcanogénicas del Mesozoico temprano conocidas como Grupo Huizachal, fueron descritas desde 1959 como una sucesión de origen fluvial que abarca del Triásico Superior al Jurásico Inferior (Formación La Boca) y
José Rafael Barboza-Gudiño +3 more
doaj +1 more source
Carbon and Hydrogen Isotopes as Tracers of Methane Dynamic in Wetlands [PDF]
, 2015 This work presents a review of the main processes leading to the production and sinking of methane in wetlands and how they affect the stable isotope composition of carbon and hydrogen.
Panarello, Hector Osvaldo, Sanci, Romina
core +1 more source