New data on the nature of substrate Late Paleozoic granites of the Southern Urals
Литосфера, 2015 Isotopic Sm-Nd and Rb-Sr systems of gneisses forming dome structures and enclosing Late Paleozoic granites in Kochkar anticlinorium of the Southern Urals were studied.
G. B. Fershtater +3 more
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U-Pb and Sm-Nd data of the Rhyacian and Statherian Orthogneisses from Rio Piranhas-Seridó and Jaguaribeano Terranes, Borborema Province, Northeast of Brazil [PDF]
Geologia USP. Série Científica, 2014 The Portalegre shear zone separates the Rio Piranhas-Seridó and the Jaguaribeano geological terranes in the Northern Domain of the Borborema Province. Banded gneisses of the Caicó and the Jaguaretama Complexes represent the basements of these terranes.
Jaziel Martins Sá +5 more
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BSGF - Earth Sciences Bulletin, 2022 It is well-acknowledged that the northern margin of the Gondwana supercontinent was affected by a major magmatic event at late Cambrian (Furongian) to early Ordovician (Tremadocian–Floian) times. However, an accurate assessment of its extent, origin, and
Couzinié Simon +4 more
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Recycling Argon through Metamorphic Reactions: the Record in Symplectites [PDF]
, 2018 The 40Ar/39Ar ages of metamorphic micas that crystallized at high temperatures are commonly interpreted as cooling ages, with grains considered to have lost 40Ar via thermally-driven diffusion into the grain boundary network.
Allaz +82 more
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The ages and rock mineral composition of the Pechenga eastern frame, the Kola region
Vestnik MGTU, 2020 The research and dating of rocks in the area of the Central Kola block (the Kola Peninsula) is due to the need to develop the Lyceum uranium ore area, the most promising for uranium mining in the Kola region, located in close proximity to the study area ...
Nitkina E. A. +2 more
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Tectonics and mineralization in Sri Lanka [PDF]
Bulletin of the Geological Society of Finland, 1985 Over nine-tenths of Sri Lanka is underlain by Precambrian metasedimentary rocks, granitic gneisses and migmatites. The Highland Series (granulite facies), made up of typical metasedimentary rocks ‒ quartzites, marble, white granulites and granulitic ...
P.W. Vitanage
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EVIDENCES OF DEFORMATIONS OF MINERALS OF THE BERKUT QUARTZ VEIN (SOUTH URALS) AFFECTED BY DYNAMOMETAMORPHIC PROCESSES [PDF]
МинералогияThe article examines petrography and mineralogy of rocks of the Berkut quartz-feldspar vein in the South Urals, which is characterized by intense deformation in comparison with numerous quartz veins of the Kyshtym block.
L.Ya. Kabanova
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Schistosity of cutting pegmatites and its relation to the fold phases in Sälsö, southwestern Finland [PDF]
Bulletin of the Geological Society of Finland, 1979 Cutting pegmatites with a schistosity parallel to the axial plane of the folds in the surrounding gneisses have been studied on Sälsö, Sottunga commune, one of the Aland islands in southwestern Finland.
N. Edelman
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Geological Journal, EarlyView.A. Modeled T‐t paths for samples in the northern Ibex Hills, showing steady cooling throughout much of the Cenozoic, until rapid Miocene cooling. B. Weighted mean paths for each sample in this study. Note that all show a rapid cooling event at or just after 10 Ma, which is interpreted to represent exhumation as a result of regional extenstion ...
Zachariah D. Fleming
wiley +1 more source
U-Pn geochronology of deformed metagranites in central Sutherland, Scotland: evidence for widespread late Silurian metamorphism and ductile deformation of the Moine Supergroup during the Caledonian orogeny [PDF]
, 2003 Within the Caledonides of central Sutherland, Scotland, the Neoproterozoic metasedimentary rocks of the Moine Supergroup record NW-directed D2 ductile thrusting and nappe assembly, accompanied by widespread tight-to-isoclinal folding and amphibolite ...
Friend, C.R.L. +5 more
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