SpletDie hohen Halogen-Gehalte in Phänokristallen aus den Shoshoniten legen nahe, die Vulkanite als den Ursprung der Vererzung zu interpretieren. Die Cu-Au Vererzung besteht überwiegend aus den Sulfiden Bornit, Kupferkies, Kupferglanz und vereinzelt auftretendem Pyrit und Tetrahedrit. Splet27. feb. 2014 · The similarity in the incompatible trace elements and radiogenic isotope ratios, over a range of SiO 2 concentrations from 42 to 74 %, is unique to the eastern Tibetan shoshonitic suite and provides a …
Shoshonite - an overview ScienceDirect Topics
SpletThe Cenozoic magmatic rocks of shoshonitic series in the eastern Qinghai-Tibet Plateau include potassic alkaline plutonic rocks, volcanic rocks, lamprophyr Isotopic … Spletshoshonitic (not comparable) ( geology ) Containing, or characteristic of shoshonite 2015 October 13, “A Human Deciduous Tooth and New 40Ar/39Ar Dating Results from the … the travoltas band edmonton
Petrography, geochemistry and geodynamic environment of …
SpletShonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents. Shonkinite is available in brown, buff, cream, green, grey, pink, white … Splet01. jan. 2024 · We present new data on mineral and whole rock compositions as well as Sr, Nd and Pb isotopes of the monzodioritic to granitic rocks from Maronia, including the … SpletClassification of Shoshonite Hide Rock Igneous rock Normal crystalline igneous rock Fine-grained ("volcanic") normal crystalline igneous rock Trachytoid Basaltic-trachyandesite Shoshonite Shoshonite is found in field S2 in the TAS diagram. Sub-divisions of Shoshonite Hide Shoshonite Absarokite Mineralogy of Shoshonite Hide seversin 2 bolum full