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Hasanzadeh, Heidari, Ghalmaghash, Mohebi. Magma and mineralization controles of Zavarian (Salafchegan) epithermal Au (Cu) in comparison with Sari-Gunay epitermal Au (Qorveh) deposit. www.ijcm.ir 2021; 29 (4) :759-778
URL: http://ijcm.ir/article-1-1678-fa.html
URL: http://ijcm.ir/article-1-1678-fa.html
حسن زاده تهمینه، حیدری سید مهران، قلمقاش جلیل، محبی آیدا. بررسی ماگما و کنترل‌کننده‌های کانهزایی طلا (مس) فراگرمایی زواریان (سلفچگان) در مقایسه با طلای فراگرمایی ساریگونای (قروه). مجله بلورشناسی و کانی شناسی ایران. 1400; 29 (4) :759-778
تهمینه حسن زاده1 
، سید مهران حیدری* 1، جلیل قلمقاش1 ، آیدا محبی1
، سید مهران حیدری* 1، جلیل قلمقاش1 ، آیدا محبی1
1- سازمان زمین شناسی و معدنی کشور
چکیده: (1035 مشاهده)
کانسار طلا (مس) زواریان در میانه کمان ماگمایی ارومیه-دختر، در مخروطی آتشفشانی با واحدهای آندزی-بازالت، آندزیتی و تودههای گرانودیوریتی واقع است. این مجموعه دارای ماهیت آهکی قلیایی و الگوی تغییرات عناصر کمیاب و خاکی نادر (غنیشدگی عناصر سنگ دوست بزرگ یون، عناصر خاکی نادر سبک نسبت به عناصر با شدت میدان بالا، عناصر خاکی نادر سنگین، ناهنجاری منفی Ti,Nbو مقادیر پایین Nb/Y) ماگماهای وابسته به کمان است. بررسیهای ساختاری بهنقش کلیدی پهنههای برشی راستگرد بهعنوان کنترلکننده حوضههای رسوبی و ایجاد شرایط لازم برای کششهای محلی و خروج ماگما اشاره دارد. پراکندگی و نوع دگرسانیهای گرمابی، رگههای کانهدار درون نفوذیها و حضور مگنتیت، تورمالین و کالکوپیریت نقش سیالهای ماگمایی رادر تشکیل کانهزایی نشان میدهند. این سیالها دارای دمای همگنشدگی 220 تا oC 350 و شوری 15-10% وزنی نمک طعام هستند. براساس مقایسه این کانهزایی با کانسار ساریگونای در شمال غرب پهنه سنندج-سیرجان، فازهای ماگمایی میوسن مربوط به تشکیل پهنههای برشی و ایجاد کششهای محلی در فازهای کوهزایی پس از برخوردی هستند که با افزایش نقش سیالهای جوی و آمیختگی آنها با سیالهای ماگمایی همراه است.
واژه‌های کلیدی: طلای فراگرمایی، زواریان، سلفچگان، ساریگونای، کوهین، ایران.
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