Results 111 to 120 of about 10,226 (223)

Fractional crystallization of high-K arc magmas: biotite- versus amphibole-dominated fractionation series in the Dariv Igneous Complex, Western Mongolia [PDF]

, 2014
Many studies have documented hydrous fractionation of calc-alkaline basalts producing tonalitic, granodioritic, and granitic melts, but the origin of more alkaline arc sequences dominated by high-K monzonitic suites has not been thoroughly investigated ...
Bucholz, Claire E., Jagoutz, Oliver, Sambuu, Oyungerel, Schmidt, Max W.   +3 more
core   +2 more sources

Volatile components and continental material of planets [PDF]

It is shown that the continental material of the terrestrial planets varies in composition from planet to planet according to the abundances and composition of true volatiles (H20, CO2, etc.) in the outer shells of the planets.
Florenskiy, K. P., Nikolayeva, O. V.
core   +1 more source

Obliquity of alkali feldspars in the Tanakami and Shigaraki Granites, Southwest Japan

The Journal of the Geological Society of Japan, 1990
Sadahiro NISHMURA, Satoshi NAKANO, Katsutoshi Tomita, Kuniaki Makino   +3 more
openaire   +2 more sources

Spectral Identification Characteristics of Typical Rocks and Minerals in Alkali Feldspar Granite Type Nb-Ta Deposits in Central Inner Mongolia

Yankuang ceshi
Located in the central region of Inner Mongolia, within the southern segment of the Daxing’anling-North China Craton metallogenic belt, the area is notable for its widespread distribution of alkaline granite-type niobium-tantalum (Nb-Ta) deposits ...
Feicui WANG, Daming WANG, Xusheng LI, Bo ZHANG, Jialin WEI, Siqi CAO, Yunxiao TONG   +6 more
doaj   +1 more source

Feldspar of alkali-granite complex Khaldzan-Buregteg (Western Mongolia): features of structure and chemical composition

Известия Томского политехнического университета: Инжиниринг георесурсов, 2016
Composition, structure and other features of minerals are the most important genetic characteristics reflecting the conditions of etheir formation and allowing reconstructing the life of a geological object. Feldspar due to its crystallization in a wide range of temperatures and pressures, isomorphic substitutions and breakdown of solid solutions, is ...
Ksenia Sergeevna Zenina, Tatiana Stepanovna Nebera, Sergey Ivanovich Konovalenko   +2 more
openaire   +2 more sources

Fertility of crustal rocks during anatexis [PDF]

, 2017
After many years of systematic experimental investigations, it is now possible to quantify the conditions for optimum fertility to melt production of most common crustal rock types as functions of temperature and to about 30 kbar pressure.
Thompson, Alan Bruce
core  

Petrology and geochemistry of Misho mafic and A2 granite rocks in southeast Marand, NW Iran

Journal of Economic Geology, 2013
Misho intrusions outcrop in the southern part of North Tabriz fault, east Misho Mountains, NW Tabriz. Filed studies, petrological and geochemical data show that both mafic and felsic rock types occur in the area.
Maryam Ahankoub, Ahmad Jahangiri, Mohsen Moayyed   +2 more
doaj  

Remote sensing and geochemical constraints on polymetallic mineralization in Abu Rusheid and Sikait granites of Egypt. [PDF]

Sci Rep
Abo Khashaba SM, El-Shibiny NH, Hassan SM, Drüppel K, Azer MK.   +4 more
europepmc   +1 more source

Radiological risk assessment and geochemical signatures of calc-alkaline bostonite dikes. [PDF]

Sci Rep
Gawad AEA, El Rahman RMA, Hanfi MY.
europepmc   +1 more source

Oxidative capacity of magmatic components [PDF]

Oxidative capacity of magmatic ...
Mueller, R. F.
core   +1 more source