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ابراهیم طالع فاضل بهزاد مهرابی حسن زمانیان معصومه حیات الغیبی

چکیده

کانی‌سازی مس- مولیبدن سنج با ژئومتری استوک‌ورک و انتشاری در محل همبری توده‌ نفوذی سنج و سنگ‌ میزبان‌ توف ‌تا آندزیت ‌پورفیری تشکیل شده است. کانه‌زایی کوارتز- سولفیدی استوک‌ورک همراه دگرسانی پتاسیک- فیلیک شامل رگه‌های کوارتز- بیوتیت-کالکوپیریت (QBC)، کوارتز- مولیبدنیت (QM) و کوارتز- پیریت (QP) است. طبق شواهد، میان‌بارهای اشباع از نمک اولیه در رگه‌های QBC با دمای بالا (C°450<) و شوری بیش از wt% NaCl eq. 40، از یک سیال نخستین قبل از رخ‌داد جوشش، تحت شرایط لیتواستاتیک (800 تا 1100 بار) سرچشمه گرفته است. پس از آن، هم‌زمان با رخ‌داد جوشش و کاهش تدریجی فشار (بین 250 تا 500 بار) ناشی از ورود به شرایط هیدرواستاتیک، رگه‌های کوارتز استوک‌ورک QM و QP با دمای کمتر از C°300 و شوری تقریبی wt% NaCl eq. 10، شکل گرفته‌اند. در مراحل پایانی کانی‌سازی، رخ‌داد میان‌بارهای غنی از مایع با دما و شوری پایین نشان‌دهنده رقیق‌شدگی نسبی سیال در نتیجه اختلاط سیالات گرمابی- ماگمایی با آبهای جوی است.

جزئیات مقاله

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ارجاع به مقاله
طالع فاضلا., مهرابیب., زمانیانح., & حیات الغیبیم. (۱۳۹۵-۱۱-۱۸). تعیین شرایط فشار- دما و تحول سیال گرمابی- ماگمایی در کانسار مس- مولیبدن سنج، البرز مرکزی: شواهد میان‌ بارهای سیال. زمین‌شناسی اقتصادی, 8(2), 431-455. https://doi.org/10.22067/econg.v8i2.36877
نوع مقاله
علمی- پژوهشی