Results 1 to 10 of about 5,669 (264)

Palaeoproterozoic structural evolution of polyphase migmatites in Olkiluoto, SW Finland [PDF]

open access: diamondBulletin of the Geological Society of Finland, 2022
In migmatitic environments the behaviour of the system is controlled by the generation and amount of the anatectic melt. Accordingly, migmatites typically show a genetic linkage between the tectonic deformation and melt migration. We investigated this
Jon Engström   +3 more
doaj   +2 more sources

Deep crustal source of gneiss dome revealed by eclogite in migmatite (Montagne Noire, French Massif Central)

open access: yesJournal of Metamorphic Geology, 2020
In orogens worldwide and throughout geologic time, large volumes of deep continental crust have been exhumed in domal structures. Extension‐driven ascent of bodies of deep, hot crust is a very efficient mechanism for rapid heat and mass transfer from ...
Donna L Whitney   +2 more
exaly   +2 more sources

Geochemical dataset of high-pressure acid migmatites from the Cabo Ortegal Complex (NW Spain) [PDF]

open access: yesData in Brief, 2022
This brief note presents geochemical data from rock samples from the Cabo Ortegal Complex (NW Spain). The samples belong to acid lithologies within the mainly basic to intermediate granulite unit that have been poorly investigated so far.
Aratz Beranoaguirre   +5 more
doaj   +2 more sources

Double Power-Law in Leucosome Width Distribution: Implications for Recognizing Melt Movement in Migmatites

open access: goldFrontiers in Earth Science, 2020
Leucosome sizes in migmatites has been shown to follow power-law distribution, which is indicative of self-organized criticality governing accumulation and transport of partial melts in anatexis.
Anna Saukko   +4 more
doaj   +2 more sources

Hydrogeochemical characterization and assessment of factors controlling groundwater salinity in the Chamwino granitic complex, central Tanzania [PDF]

open access: yesHeliyon
Chamwino district, central Tanzania is a semi-arid granitic complex province, where groundwater is the major source of water for domestic and other uses. However, groundwater in the area is affected by salinity, thus, lowering the availability of potable
Christina M. Msengi   +3 more
doaj   +2 more sources

Thermal buffering-controlled temperature variation between Mg–Al-rich rocks and migmatites [PDF]

open access: yesScientific Reports
It is well recognised that endothermic processes such as dehydration and partial melting have the potential to exert measurable effects on the maximum temperatures reached in metamorphic rock systems.
Samantha March   +3 more
doaj   +2 more sources

Multiphase boudinage: a case study of amphibolites in marble in the Naxos migmatite core [PDF]

open access: yesSolid Earth, 2018
In multiply deformed terrains multiphase boudinage is common, but identification and analysis of these is difficult. Here we present an analysis of multiphase boudinage and fold structures in deformed amphibolite layers in marble from the migmatitic ...
S. Virgo, C. von Hagke, J. L. Urai
doaj   +2 more sources

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: diamondBulletin 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   +2 more sources

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   +2 more sources

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