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Petrology and geochemistry of the back-arc lithospheric mantle beneath eastern Payunia (La Pampa, Argentina): evidence from Agua Poca peridotite xenoliths
(Geochemical Society of Japan, 2013-04)
This paper presents the results of new petrochemical studies carried out on mantle xenoliths hosted in Pleistocene basaltic rocks from the Agua Poca volcano in central-western Argentina. Mantle xenoliths studied are shown ...
GEOPHYSICAL SIGNATURE OF THE DEEP LITHOSPHERE UNDERLYING THE ALTO PARANAÍBA IGNEOUS PROVINCE: CONSTRAINING UPPER MANTLE PROPERTIESGEOPHYSICAL SIGNATURE OF THE DEEP LITHOSPHERE UNDERLYING THE ALTO PARANAÍBA IGNEOUS PROVINCE: CONSTRAINING UPPER MANTLE PROPERTIES
(Sociedade Brasileira de Geologia, 2017)
Re-Os isotope constraints on subcontinental lithospheric mantle evolution of southern South America
(Elsevier Science, 2008-04)
We present Re-Os isotopic data for widely dispersed mantle xenoliths carried to the surface of southern South America (36°-52° S) by Eocene to recent alkaline magmatism. Our hypothesis is that the lithospheric mantle ...
Andean subduction-related mantle xenoliths: Isotopic evidence of Sr-Nd decoupling during metasomatism
(ELSEVIER SCIENCE BV, 2005-06)
Sr-Nd isotopic analyses on some mantle xenolith samples from the Northern, Southern and Austral Andean volcanic zones exhibit radiogenic Sr enrichment without dramatic changing of the Nd isotopic composition. This anomalous ...
Sr-Nd-Pb isotopic constraints on the nature of the mantle sources involved in the genesis of the high-Ti tholeiites from northern Paraná Continental Flood Basalts (Brazil)
(2013-10-01)
There has been little research on geochemistry and isotopic compositions in tholeiites of the Northern region from the Paraná Continental Flood Basalts (PCFB), one of the largest continental provinces of the world. In order ...
Sr-Nd-Pb isotopic constraints on the nature of the mantle sources involved in the genesis of the high-Ti tholeiites from northern Paraná Continental Flood Basalts (Brazil)
(2013-10-01)
There has been little research on geochemistry and isotopic compositions in tholeiites of the Northern region from the Paraná Continental Flood Basalts (PCFB), one of the largest continental provinces of the world. In order ...
Lowermost mantle anisotropy near the eastern edge of the Pacific LLSVP: constraints from SKS–SKKS splitting intensity measurements
(Oxford University Press, 2017-05-05)
Seismic anisotropy has been documented in many portions of the lowermost mantle, with particularly strong anisotropy thought to be present along the edges of large low shear velocity provinces (LLSVPs). The region surrounding ...
The origin of Patagonia revealed by Re-Os systematics of mantle xenoliths
(Elsevier, 2017-06)
We present mineral chemistry and whole rock major, trace, and platinum group element (PGE) concentrations, and Re-Os isotope data for eighteen mantle xenoliths carried to the surface of southern Patagonia (45 degrees-52 ...