Results 21 to 30 of about 13,752 (229)
Geochemical and Isotope Anomalies in Sioma River Gorge, Western Tajikistan
Radiation, 2021 For a better understanding of the previously observed increased natural radioactivity at the confluence of the Varzob and Sioma rivers, Central Tajikistan, the activity concentration of natural radioactive 40K, Th and U daughters as well as of the ...
Djamshed A. Abdushukurov +3 more
doaj +1 more source
Frontiers in Earth Science, 2022 Fluid exsolution in magmas is a process that, in many silicic upper crustal reservoirs, starts at relatively low crystallinities (near liquidus), and precedes the precipitation of many ore bodies, including pegmatites.
Ludmila Maria Fonseca Teixeira +3 more
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The structure and petrology of the Cnoc nan Cuilean Intrusion, Loch Loyal Syenite Complex, NW Scotland [PDF]
, 2013 In NW Scotland, several alkaline intrusive complexes of Silurian age intrude the Caledonian orogenic front. The most northerly is the Loch Loyal Syenite Complex, which is divided into three separate intrusions (Ben Loyal, Beinn Stumanadh and Cnoc nan ...
Goodenough, Kathryn M. +5 more
core +3 more sources
Data, 2021 The existence of diagnostic features in the visible and infrared regions makes it possible to use reflectance spectra not only to identify mineral assemblages but also for calibration and classification of satellite images, considering lithological and ...
Joana Cardoso-Fernandes +9 more
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The Sveconorwegian Pegmatite Province – Thousands of Pegmatites Without Parental Granites [PDF]
The Canadian Mineralogist, 2017 Abstract The Late-Proterozoic Sveconorwegian pegmatite province in southern Norway and southwest Sweden hosts seven rare-element pegmatite districts with more than 5000 rare-element pegmatites. Most of these pegmatites with Niobium-Yttrium-Fluorine (NYF) signature are not related to a parental granite, but instead occur in areas of high-grade ...
Müller, Axel +2 more
openaire +3 more sources
Experimental strategies for the investigation of low temperature properties in granitic and pegmatitic melts [PDF]
, 1993 The physical behavior of silicate melts during the final stages of intrusion in the earth's crust are poorly understood. In particular, the low temperature limit of igneous petrogenesis is poorly constrained.
Adam +37 more
core +1 more source
The fluxing effect of fluorine at magmatic temperatures (600-800 °C): A scanning calorimetric study [PDF]
, 1992 The effect of F on the glass transition behavior of albite, diopside, and four other silicate melts has been investigated using scanning calorimetry. The addition of F to all silicate melts investigated results in a strong, nonlinear decrease of the ...
Dingwell, Donald B., Webb, Sharon L.
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P-T path fluid evolution in the Gross Spitzkoppe granite stock, Namibia [PDF]
Bulletin of the Geological Society of Finland, 2002 The Gross Spitzkoppe granite stock (GSS) is a zoned 30 km2 epizonal intrusion that consists of three main granites: 1) medium-grained biotite granite (marginal), 2) a coarse-grained biotite granite, and 3) a central, porphyritic granite.
S. Frindt, M. Poutiainen
doaj +1 more source
Геологія і корисні копалини Світового океану, 2023 Pegmatite (sample 13/10) exposed in the valley of the Berezivka River (Krynychuvatka village) was studied and its isotopic age was determined by monazite.
Stepanyuk L.M. +4 more
doaj +1 more source
Water solubility in aluminosilicate melts of haplogranite composition at 2 kbar [PDF]
, 1992 The compositional dependence of H2O solubility was investigated at 2 kbar and 800°C in haplogranite melts (system SiO2---1bNaAlSi3O8---1bKAlSi3O8 or Qz---1bAb---1bOr).
Blamart +41 more
core +1 more source