Results 41 to 50 of about 22,873 (195)
Литосфера, 2018 Murzinka massif is a sheet-like interformational body steeply deeping to the East with length about 6 km. Proterozoic metamorphic rocks of the predominantly granulite facies ( P = 5-6 kbar, T = 750-800°C) occur at the base of massif, and volcanic ...
German B. Fershtater +1 more
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Materiales de Construccion, 2006 The suitability of granite conservation treatments (consolidation and/or water-repellency) wide/y used to protect heritage structures was evaluated on the basis of the changes occurring in the intrinsic characteristics of the stone (imbibition capacity ...
A. C. Íñigo +2 more
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Geologica Acta, 2020 Northern Portugal is characterized by the occurrence of numerous W hydrothermal deposits spatially associated with granites. The primary goal of this work is to establish a relationship between the magnetic behavior of the granites and the redox ...
C. Cruz, H. Sant’Ovaia, F. Noronha
doaj +3 more sources
PETROGENETIC MODELING OF SOME GRANITIC MASSES IN THE CENTRAL EASTERN DESERT, EGYPT [PDF]
Delta Journal of Science, 2007 Three granitic masses, namely Gabal Dellihimmi (140 km2), Gabal Abu Tiyur (30 km2) and Gabal Um Shaddad (17 km2) are located in the central Eastern Desert, intruded older metavolcanics and metasediments.
A.I. Ragab +4 more
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An εHf and δ18O Isotopic Study of Zircon of the Mount Osceola and Conway Granites, White Mountain Batholith, New Hampshire: Deciphering the Petrogenesis of A-Type Granites [PDF]
, 2021 A-type granites form in anorogenic settings and typically have high REE concentrations, K2O, Na2O, SiO2, FeOtotal, but low contents of Al2O3, MgO, CaO compared to other granite types.
Matos Strauss, Javier Fabian
core
Determination of trace element profiles in coarse-grained minerals by external millibeam PIXE - A schorl tourmaline study [PDF]
Bulletin of the Geological Society of Finland, 1995 The thick-target PIXE technique was applied to direct analysis of trace elements in tourmaline minerals. Analyses of these minerals with conventional wet-chemical methods are difficult and time consuming.
A. Lindroos +4 more
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Geology and geochemistry of the Redrock Granite and anorthosite xenoliths (Proterozoic) in the northern Burro Mountains, Grant County, New Mexico, USA [PDF]
Bulletin of the Geological Society of Finland, 2002 Mineral ages from the A-type granites and anorthosite xenoliths in the Redrock area in the northwestern Burro Mountains in southwestern New Mexico cluster around ~1220–1225 Ma and provide yet another example of bimodal igneous activity during this time ...
V.T. McLemore +5 more
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, 2015 A-type granites are a minor, but distinctive, component of the granites of the Lachlan Fold Belt of southeastern Australia. They are felsic rocks with SiO2 contents ranging from 69.7 to 77.1%, with an average of 73.8% (55 analyses).
King, I +3 more
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Numerical Analysis of Tensile Crack Initiation and Propagation in Granites [PDF]
, 2017 application/pdf論文(Article)Fracture analyses based on finite cover method (FCM) are conducted to investigate a fracture mechanism of granites. The analysis by the FCM, which is a cover-based generalized finite element method, has been extended for ...
Obara, Yuzo +11 more
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, 1997 International audienceThe Mesoproterozoic (1.77 ga-1.60 ga) granites of the Goias Tin Province occur in the states of Goias and Tocantins, Brazil. They are situated in the Rio Parana and the Rio Tocantins sub-provinces.
Andrade, Gustavo +4 more
core +5 more sources