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گرانیت(نام گرانیت ریشه در لاتین دارد به معنای دانه= granum) سنگی آذرین درونی با دانه های درشت کریستال کوارتز است. به این مفهوم که سنگی است که از سرد شدن گدازه در سطح زمین یا نزدیک آن به وجود می آید. زمین از لایه های سنگ و ماگما تشکیل شده است. لایه سطحی زمین با عنوان لیتوسفر یا پوسته شناخته می شود. در زیر لیتوسفر گوشته ای قرار دارد که از سنگ مذابی ب...
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یک پیام ارسال کرد