Petrogenetic significance of normative corundum in calc-alkaline volcanic rock series.
نویسندگان
چکیده
منابع مشابه
Significance of hornblende in calc-alkaline andesites and basalts
Hornblende occurs in some andesitic and basaltic rocks of calc-alkaline affini1y, where it is commonly associated with olivine. The texture, eruption history, and composition are interpreted to indicate that hornblende commonly forms as a product of reaction between olivine and basaltic and andesitic liquids. The natural hornblendes probably formed within the crust at temperatures between 960o ...
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متن کاملسنگشناسی سنگهای آتشفشانی ائوسن جنوب غرب چوپانان (شمال شرق استان اصفهان) و ماهیت انتقالی آنها
Eocene volcanic rocks in SW of Choupanan are exposed along the Choupanan fault as lava with andesite, trachyandesite to dacite composition and pyroclastic rocks. This area is a part of Central Iran (Yazd block). Andesite is the most predominant rock unit of the area and is composed of feldspars (andesine, oligoclase, and sanidine), amphibole (magnesio hastingsite, magnesian hastingsite, magnesi...
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ژورنال
عنوان ژورنال: The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists
سال: 1975
ISSN: 0021-4825,1883-0765
DOI: 10.2465/ganko1941.70.85