Results 91 to 100 of about 4,836 (216)

Diamonds from Dachine, French Guiana : a unique record of Early Proterozoic subduction [PDF]

open access: yes, 2016
This research was supported by NERC grant NE/J008583/1 to MJW and SCK.Diamonds from Dachine, French Guiana, are unique among worldwide diamond populations.
Bulanova, Galina P.   +6 more
core   +2 more sources

Rock weathering along small mountainous rivers: Sierra de las Minas, Guatemala [PDF]

open access: yes, 2016
Studies of chemical weathering in small mountainous rivers have shown their disproportional role in chemical weathering and delivery of dissolved and particulate materials on a global scale. Previous stream water analyses from La Sierra de Las Minas have
Miller, Laura
core  

Tectonostratigraphic terranes and zones juxtaposed along the Mid-Hungarian Line: their contrasting evolution and relationships [PDF]

open access: yes, 2010
The Mid-Hungarian (or Zagreb-Zemplin) Line of WSW–ENE strike divides the Pannonian basement into two mega-units, the Tisia Composite Terrane in the SE and the ALCAPA Composite Terrane in the NW. They became juxtaposed no earlier than the Middle Miocene
Brezsnyánszky, Károly   +4 more
core   +1 more source

Rb-Sr and in situ 40Ar/39Ar dating of exhumation-related shearing and fluid-induced recrystallization in the Sesia zone (Western Alps, Italy) [PDF]

open access: yes, 2018
The Sesia zone in the Italian Western Alps is a piece of continental crust that has been subducted to eclogite-facies conditions and records a complex metamorphic history.
Glodny, J   +3 more
core   +2 more sources

OXIDES AND SILICATES OF RARE AND RARE-EARTH ELEMENTS IN ALKALINE ROCKS OF THE ILMENOGORSKY BLOCK (SOUTHERN URALS) [PDF]

open access: yesМинералогия, 2017
A significant part of the REE and rare elements in the rocks of the Ilmenogorsky block forms its own minerals. Oxides and silicates of rare and rare-earth elements in alkaline rocks of Ilmenogorsky block (Southern Urals) include oxynatropyrochlore ...
E.P. Makagonov   +2 more
doaj  

Occurrence of a skarn-type mineralogy found in Ciénaga Marbles, located in the NW foothills of the Santa Marta Massif (Colombia)

open access: yesDyna, 2016
The early Cretaceous Ciénaga Marbles that crop out in the NW foothills of the Santa Marta Massif (Colombian Caribbean region) present an epigenetic mineral assemblage (skarn-type), overprinting the metamorphic mineral assemblage previously developed ...
Oscar Mauricio Castellanos-AlarcónCarlos   +2 more
doaj   +1 more source

Epidote populations in contaminated granitic pegmatites from Northern Portugal [PDF]

open access: yes, 2010
Publicado em "Acta Mineralogica-Petrographica.
Dias, Patrícia Sofia Alves   +1 more
core  

A case for hornblende dominated fractionation of arc magmas: the Chelan Complex (Washington Cascades) [PDF]

open access: yes, 2018
Amphibole fractionation in the deep roots of subduction-related magmatic arcs is a fundamental process for the generation of the continental crust.
Dessimoz, Mathias   +2 more
core  

Triaxial compression testing of multicomponent geomaterials from quartz-poor (syenitic) systems [PDF]

open access: yes, 2017
This paper focuses on mafic microgranular enclaves enclosed in quartz-poor igneous rocks and their effect on strength properties of the rock massif. The study examines host rock–enclave multicomponent geomaterials from enclave-bearing syenitic rocks from
Krmíček, Lukáš, Závacký, Martin
core   +2 more sources

Why allanite may swindle about its true age

open access: yesContributions to Mineralogy and Petrology, 2003
Allanite from the Tertiary Rieserferner pluton (Austrian Alps) is texturally and chemically heterogeneous. Continuous covariation trends reflect coupled substitution of Ca+Al vs. Fe+REE+Th in allanite, whereas systematic variations in La/Nd demonstrate the increasingly stronger depletion of LREE in the melt during its crystallization. Allanite samples (
Romer, R., Siegesmund, S.
openaire   +5 more sources

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