Results 91 to 100 of about 298,753 (226)
Journal of Economic Geology, 2014 Introduction The study area is a small part of the Urumieh-Dokhtar structural zone in the Markazi province, located in the northeastern part of the Farmahin, north of Arak (Hajian, 1970). The volcanic rocks studied from the area include andesite, dacite,
Reza Zarei Sahamieh, Sara Ebrahimi
doaj
Calc-alkaline volcanism and the thickness of the early Precambrian crust in North America
, 1969 Geochemical and geophysical data indicate that the average potash content of young calc-alkaline volcanics increases in approximately a linear manner with crustal thickness. If such a relationship existed during the Precambrian, potash contents of early
Mark J. Potts, Kent C. Condie
core +1 more source
Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.A biobased tricyclic thionolactone undergoes selective isomerization ring‐opening polymerization to yield a high‐molecular‐weight polythioester with an exceptionally high Tg of 171°C, exceeding that of the analogous polyester. The polythioester efficiently depolymerizes through backbiting, while its hydrolysis and methanolysis reveal the critical ...
Eva Harsevoort +4 more
wiley +1 more source
Mineral chemistry of late Variscan gabbros from central Spain: constraints on crystallisation processes and nature of the parental magmas [PDF]
, 2015 [EN] Major and trace element chemistry has been determined in the main minerals (olivine, orthopyroxene, clinopyroxene, plagioclase, amphibole, phlogopite) from the Talavera and La Solanilla gabbroic intrusions (Spanish Central System). The results show
Jeffries, T. E. +11 more
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Biotite and Hornblende Composition Used to Investigate the Nature and Thermobarometry of Pichagchi Pluton, Northwest Sanandaj-Sirjan Metamorphic Belt, Iran [PDF]
Journal of Sciences, Islamic Republic of Iran, 2008 Pichagchi pluton is situated in the northeastern part of the Soursat complex in Sanandaj-Sirjan metamorphic belt of Iran. The pluton with the age of 74.20 Ma is composed mainly granodiorite, diorite, and tonalite in which mafic minerals are biotite and ...
doaj
Solar RRL, Volume 10, Issue 19, 15 October 2026.Bifacial ACIGS mini‐module prototypes with In2O3:Ti back contacts are fabricated and analyzed. Efficiencies of 13.5% and 10.3% are achieved under front and rear illumination, respectively. High bifaciality factors of up to 76% are enabled by the excellent transparency and conductivity of the thermally stable In2O3:Ti film.
Jan Keller +10 more
wiley +1 more source
Element fluxes associated with co-existing tholeiitic and calc-alkaline magmas in Japan
, 1993 The coexistence of tholeiitic and calc-alkaline magmas within single volcanic systems is examined in detail within Towada and Aso volcanoes, Japan. Petrogenetic models are presented for each magmatic system with respect to intracrustal and mantle wedge ...
Hunter, Arlene G.
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, 1979 La, Ce, Nd, Sm, Eu, Gd, Tb, Yb, Lu, Cr and Sc contents have been determined by instrumental neutron activation analyses (INAA) in high-K calc-alkaline and shoshonitic volcanic rocks from the Upper Cretaceous volcanic belt of Eastern Srednogorie (Bulgaria)
POLI, Giampiero +2 more
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, 2010 International audienceThe lower Cryogenian mafic magmatism from the Igherm, Ifni and Kerdous inliers (Moroccan Western Anti-Atlas) have calc-alkaline, tholeiitic and alkaline affinities. The calc-alkaline dolerite dykes and gabbros bodies emplaced before
Gasquet, Dominique +2 more
core +1 more source
Iraqi Geological JournalThe origin of magma, source materials, and geodynamic setting of plutonic and volcanic rocks was elucidated by studying the characteristics of the rocks in the Tanjung area, South Sulawesi, Indonesia.
Hasbi Bakri +3 more
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