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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)
The upper mantle beneath Patagonia, Argentina, documented by xenoliths from alkali basalts
(Pergamon-Elsevier Science Ltd, 2005-01)
Mantle xenoliths in alkali basaltic lavas (with ocean-island basalt chemical signatures) and cinder cones occur in several areas of Patagonia. A representative suite of mantle xenoliths was collected in the region between ...
Geochemical make-up of oceanic peridotites from NW Turkey and the multi-stage melting history of the Tethyan upper mantle
(Springer Wien, 2014-02)
We present the whole-rock and the mineral chemical data for upper mantle peridotites from the Harmanci{dotless}k region in NW Turkey and discuss their petrogenetic-tectonic origin. These peridotites are part of a Tethyan ...
The enigma of crustal zircons in upper-mantle rocks: Clues from the Tumut ophiolite, southeast Australia
(2015)
We suggest a new explanation for the presence of crustally derived zircons in the upper-mantle rocks of ophiolitic complexes, as an alternative to subduction-related models. Integrated isotopic (U-Pb, Hf, and O isotopes) ...
The enigma of crustal zircons in upper-mantle rocks: Clues from the Tumut ophiolite, southeast Australia
(Geological Society of America, 2015)
We suggest a new explanation for the presence of crustally
derived zircons in the upper-mantle rocks of ophiolitic complexes,
as an alternative to subduction-related models. Integrated isotopic
(U-Pb, Hf, and O isotopes) ...
Predicting viscoplastic anisotropy in the upper mantle: a comparison between experiments and polycrystal plasticity models
(Elsevier Science, 2019-01)
Viscoplastic deformation of mantle rocks produces crystal preferred orientations (CPO or texture) of olivine and, by consequence, an anisotropic mechanical response for subsequent deformation events. Olivine polycrystals ...
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 ...
Upper-mantle seismic structure beneath SE and Central Brazil from P- and S-wave regional traveltime tomography
(WILEY-BLACKWELL PUBLISHING, INC, 2011)
We present models for the upper-mantle velocity structure beneath SE and Central Brazil using independent tomographic inversions of P- and S-wave relative arrival-time residuals (including core phases) from teleseismic ...
Depletion and refertilization of the Tethyan oceanic upper mantle as revealed by the early Jurassic Refahiye ophiolite, NE Anatolia-Turkey
(Elsevier Science, 2015-02)
We present new whole-rock major and trace element, Re-Os isotope and mineral chemistry data for the upper mantle peridotites and mafic rocks in the Rehafiye ophiolite in NE Anatolia (Turkey), and discuss their significance ...