تفکیک زون‌های دگرسانی با استفاده از تصاویر سنجش از دور و ماشین بردار پشتیبان، بررسی موردی: ناحیه زگلیک، زون متالوژنی ارسباران، شمال‌ غرب ایران

زمین شناسی اقتصادی

مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 28 اردیبهشت 1404   

نوع مقاله: مقاله پژوهشی

شناسه دیجیتال (DOI): 10.22067/econg.2025.1138

نویسندگان

علی امامعلی پور^{* 1}؛ حبیب اله بازدار²

¹دانشیار، گروه مهندسی معدن، دانشکده فنی مهندسی، دانشگاه ارومیه، ارومیه، ایران

²دانشجوی دکتری، گروه مهندسی معدن، دانشکده فنی مهندسی، دانشگاه ارومیه، ارومیه، ایران

چکیده

تفکیک مناطق دگرسانی در اکتشاف کانسارهای مس پورفیری- طلای اپی‌ترمالی نقش به سزایی دارد و یکی از موارد کلیدی در عملیات اکتشاف این کانسارهاست. در مرحله اکتشاف عمومی و در مقیاس وسیع اکتشافی این کانسارها، یکی از مهم‌ترین راهنماها برای تعیین مناطق مناسب جهت حفاری اکتشافی در مرحله اکتشاف تفصیلی، شناخت و تفکیک مناطق دگرسانی است. در این پژوهش با استفاده از تصاویر ماهواره‌ای و یک مدل هوشمند توسط ماشین بردار پشتیبان، مناطق دگرسانی تفکیک‌شده است. منطقه مورد بررسی ناحیه زگلیک در نزدیکی شهر اهر واقع در استان آذربایجان شرقی است. تصاویر به دست آمده از ماهواره برای مدل‌سازی با استفاده از ماشین بردار پشتیبان، رقومی شده و چهار رده برای طبقه‌بندی داده‌ها با نام‌های رگه سیلیسی، آرژیلیک، پروپلیتیک و استوک ورک تعیین‌شد. بعد از آماده‌سازی داده‌ها با استفاده از ماشین بردار پشتیبان، داده‌ها در چهار رده تعریف‌شده طبقه‌بندی شد و دقت مدل در طبقه‌بندی صحیح داده‌ها 24/94 درصد محاسبه شد. در نهایت، نقشه دگرسانی محدوده با داده‌های پیش‌بینی شده ترسیم و با نقشه برداشت‌شده قبلی مقایسه‌شد که عملکرد مناسب مدل را نشان می‌داد.

کلیدواژه‌ها

تفکیک مناطق دگرسانی؛ ماشین بردار پشتیبان؛ سنجش از دور؛ کانسارهای پورفیری؛ ناحیه فلززایی ارسباران

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