Results 41 to 50 of about 373,536 (210)

Pressure-temperature conditions and significance of Upper Devonian eclogite and amphibolite facies metamorphisms in southern French Massif central

open access: yesBSGF - Earth Sciences Bulletin, 2020
The southwestern French Massif central in western Rouergue displays an inverted metamorphic sequence with eclogite and amphibolite facies units forming the top of the nappe stack.
Benmammar Anissa   +7 more
doaj   +1 more source

The age and origin of the Vaasa migmatite complex revisited [PDF]

open access: yesBulletin of the Geological Society of Finland, 2014
The origin of the Vaasa migmatite complex was studied by using whole-rock Sm-Nd and zircon Lu-Hf and U-Pb data in conjunction with whole-rock major and trace element geochemistry.
E. Suikkanen   +3 more
doaj   +1 more source

Chromite chemistry in SNC meteorites [PDF]

open access: yes, 2001
We present the results of new EPMA studies of chromite in primitive basaltic shergottites (SAU005, EETA7001A, DAG476) and ALH84001 and Chassigny.
Bridges, John, Grady, Monica
core  

Recrystallization and Melting of Partially Melted Stark Rubber

open access: yesRubber Chemistry and Technology, 1967
Abstract Two specimens from a piece of stark rubber which had a melting temperature originally at 41° C were partially melted at 38° C and allowed to stand for 11 years, one at about 25° C, the other at 38° C. The first showed a continuous slow decrease in specific volume, while the second increased slowly in volume for 5 months and remained ...
openaire   +2 more sources

Spontaneous small‐scale melt segregation in partial melts undergoing deformation [PDF]

open access: yesGeophysical Research Letters, 1989
A partial melt undergoing large scale deformation is shown to be unstable with respect to small scale redistribution of melt, provided the shear viscosity of the matrix depends on melt fraction. In the physically realistic case where melt “softens” the matrix, melt migrates along the direction parallel to the axis of minimum compressive stress and ...
openaire   +2 more sources

Van Gölü’nün doğusundaki Otlakbaşı bazaltik volkanizmasının petrolojik ve jeokimyasal evrimi

open access: yesBulletin of the Mineral Research and Exploration, 2018
Van Gölü’nün doğusundaki çarpışma ile ilişkili Otlakbaşı volkanizması farklı açılma çatlaklarından püskürerek meydana gelmiştir. Bu çalışmada, Otlakbaşı bazaltik volkanizmasının yeni yaş verisi ve ana oksit, iz ve nadir toprak element jeokimyasal ...
Vural OYAN
doaj   +1 more source

Petrogenesis of mafic-intermediate magmatism of the Michoacán–Guanajuato volcanic field in Western Mexico. A geochemical review

open access: yesFrontiers in Earth Science, 2022
The Michoacán–Guanajuato volcanic field (MGVF) in the western Trans-Mexican Volcanic Belt is one of the largest and most diverse monogenetic volcanic fields in the world holding more than 1200 volcanic vents.
Darío Torres-Sánchez   +3 more
doaj   +1 more source

Direct observation of melting in a 2-D superconducting vortex lattice

open access: yes, 2009
Topological defects such as dislocations and disclinations are predicted to determine the twodimensional (2-D) melting transition. In 2-D superconducting vortex lattices, macroscopic measurements evidence melting close to the transition to the normal ...
Cordoba, R.   +7 more
core   +1 more source

Tectono-metamorphic evolution and timing of the melting processes in the Svecofennian Tonalite-Trondhjemite Migmatite Belt: An example from Luopioinen, Tampere area, southern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1999
The Svecofennian Orogen is in southern Finland characterized by two major migmatite belts. These are the so-called Granite Migmatite Belt, in which Kfs-rich leucosomes predominate, and the Tonalite-Trondhjemite Migmatite Belt, which is characterized by ...
H. Mouri, K. Korsman, H. Huhma
doaj   +1 more source

Low-Degree Partial Melting Experiments of CR and H Chondrite Compositions: Implications for Asteroidal Magmatism Recorded in GRA 06128 and GRA 06129 T [PDF]

open access: yes, 2010
Studies of differentiated meteorites have revealed a diversity of differentiation processes on their parental asteroids; these differentiation mechanisms range from whole-scale melting to partial melting without the core formation [e.g., 1].
Jones, John H.   +2 more
core   +1 more source

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