دوره 28، شماره 4 - ( 10-1399 )                   جلد 28 شماره 4 صفحات 868-859 | برگشت به فهرست نسخه ها


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1- دانشگاه آزاد اسلامی
2- دانشگاه ازاد اسلامی
3- دانشگاه یزد
چکیده:   (1259 مشاهده)
توده­های نفوذی الیگوسن-میوسن شمال ساردوئیه در پهنه ارومیه-دختر قرار دارد. ترکیب سنگ­شناسی گرانیتوئیدها شامل کوارتزدیوریت، تونالیت، گرانودیوریت، گرانیت و گرانوفیر است، بررسی شیمی کانی­ها در این منطقه نشان می­دهد که آمفیبول‌ها در گستره آمفیبول­های کلسیمی و از نوع اکتینولیت تا منیزیوهورنبلند قرار دارند. براساس همه تمامی روش­های به کار رفته برای دما - فشارسنجی، این توده­ها در دمای 700 تا 750 درجه سانتیگراد با گریزندگی اکسیژن 57/13- تا 76/15- و فشار پایین 1 تا 3 کیلوبار در عمق 20 کیلومتری تشکیل شده­اند، این آمفیبول­ها وابسته به محیط فرورانش هستند که با ویژگی­های زمین­ساختی ماگمایی پیشنهادی برای این توده ها، یعنی محیط کرانه فعال قاره­ای وابسته به فرورانش، همخوانی دارد.
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نوع مقاله: پژوهشي | موضوع مقاله: تخصصي

فهرست منابع
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