مطالعه شیمی کانی و انکلوزیون های مذاب در فنوکریست های کلینوپیروکسن و کاربرد آن در تفسیرهای پترولوژیکی و کانه زائی: مطالعه موردی دایک های لامپروفیری درشمال غرب ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه شهید بهشتی

2 دانشگاه زنجان

چکیده

لامپروفیرهای کالک آلکالن ارتباط زمانی مشخص با کانی زایی طلا دارند. در دایک های لامپروفیری کالک آلکالن در رشته کوه صلوات ، شمال غرب ایران انکلوزیون های مذاهب چند فازی در کانی کلینوپیروکسن تشخیص داده شده است که از فاز شیشه ، کانی دختر و حباب گاز تشکیل شده اند. ترکیب شیمیایی شیشه مذاب مشابه با ترکیب کلینوپیروکسن میزبان در لامپروفیرهای کالک آلکالن است. مطالعات رامان اسپکتروسکوپی همچنین بیانگر حضور فاز گازی نظیر CO 2 در انکلوزیون های مورد مطالعه است. مجموع نتایج بد آمده از شیمی کانی و مطالعات انکلوزیون مذاهب ، نشان دهنده نقش اصلی س اساسیالات و فرایند متاسوماتیسم در منشاء ماگمای سازنده سنگ های لامپوفیری رشته کوه صلوات است. مطالعه حاضر مهمی در تفسیر فرایندهای مرتبط با گوشت فوق العاده است که در تحولات ماگمای آلکالن ، متاسوماتیسم گوشته ای و کانی زایی مرتبط با آن از ویژه ویژه ای است.
 

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