Results 81 to 90 of about 6,499 (231)

Características isotópicas Sr-Nd do Granito do Pedregal e rochas migmatíticas associadas [PDF]

open access: yes, 2015
Neste trabalho são apresentados os resultados isotópicos Sr-Nd do Granito do Pedregal e das rochas gnaissomigmatíticas associadas, aflorantes na Zona Centro-Ibérica noroeste de Portugal, no bordo oriental do maciço granítico sin-orogénico do Porto.
Ferreira, J. A.   +3 more
core  

The Lomagundi-Jatuli carbon isotopic event recorded in the marble of the Tandilia System basement, Río de la Plata Craton, Argentina [PDF]

open access: yes, 2019
The “Lomagundi-Jatuli event” corresponds to the most important δ13C positive anomaly (≥5‰) globally reported in Palaeoproterozoic marine carbonates (between ∼2.30 and 2.06 Ga).
Ballivian Justiniano, Carlos Alberto   +6 more
core   +1 more source

A Dual‐Geochronologic and Thermochronologic Detrital Approach to Identify the Focus of Erosion in the Kosi Basin, Nepal

open access: yesTectonics, Volume 44, Issue 12, December 2025.
Abstract The Kosi River watershed captures the major lithotectonic units, structures, and characteristic climatic conditions found along the Himalaya. Therefore, this setting provides a useful location to investigate the respective influences of tectonics and climate in eroding bedrock and driving landscape evolution.
J. N. Zehner   +7 more
wiley   +1 more source

METALLOGENY OF SOUTH TISIA - MOSLAVAČKA MT., PSUNJ, PAPUK AND KRNDIJA

open access: yesRudarsko-geološko-naftni Zbornik, 2013
Core of the Moslavačka Mt. is built of S-type granite and granodiorite, wrapped up in migmatites. Outer zone is represented with metamorphites of amphibolite facies. The Moslavačka Mt.
Ivan Jurković
doaj  

The role of boron and fluids in high temperature, shallow level metamorphism of the Chugach Metamorphic Complex, Alaska [PDF]

open access: yes
The possible role of boron (B) involvement in granite equilibria and generation of melts during crustal metamorphism has been a focus of speculation in recent literature.
Leeman, W. P., Sisson, V. B.
core   +1 more source

Stability and isotopic dating of monazite and allanite in partially molten rocks: examples from the Central Alps [PDF]

open access: yes, 2018
We investigated the stability of monazite and allanite as a function of bulk rock composition within several types of Tertiary Alpine anatexites, characterized by different compositions and melting reactions, but similar P-T conditions of melting.
Berger, Alfons   +2 more
core  

Petrogenesis, U-Pb and Sm-Nd geochronology of the Furna Azul Migmatite: partial melting evidence during the San Ignácio Orogeny, Paraguá Terrane, SW Amazon Craton

open access: yesBrazilian Journal of Geology
: The Furna Azul Migmatite is a ~10 km2 complex located in Pontes e Lacerda city, Mato Grosso, Brazil. It belongs to Paraguá Terrane, limit with Rio Alegre Terrane, southeast of San Ignacio Province, in Amazon Craton.
Newton Diego Couto do Nascimento   +6 more
doaj   +1 more source

Modelling mid-crustal migmatite terrains as feeder zones for granite plutons: the competing dynamics of melt transfer by bulk versus porous flow [PDF]

open access: yes, 2017
The common association of mid-crustal migmatites with an upper-level granite pluton could indicate that the migmatites are a feeder zone for the pluton. If magma from a deeper level pervasively intrudes a high temperature metamorphic complex, most of the
Baumgartner, Lukas P.   +2 more
core  

Two-stage partial melting during the Variscan extensional tectonics (Montagne Noire, France) [PDF]

open access: yes, 2016
International audienceOne of the striking features that characterise the late stages of the Variscan orogeny is the development of gneiss and migmatite domes, as well as extensional Late Carboniferous and Permian sedimentary basins.
Paquette, Jean-Louis   +6 more
core   +3 more sources

Comparative assessment of aquifer susceptibilities to contaminant from dumpsites in different geological locations

open access: yesHeliyon, 2019
Geophysical and hydro-chemical investigations have been undertaken within the vicinity of Arapaja, Apete and Sabo dumpsites monolithically underlain by three different rock types namely; Migmatite Gneiss, Quartzite, and Granitic Gneiss respectively in a ...
K.A.N. Adiat   +4 more
doaj   +1 more source

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