فصلنامه علمی علوم زمین

فصلنامه علمی علوم زمین

جدایش بی‌هنجاری‌های لیتیم با استفاده از روش‌های چندمتغیره و فرکتال: مطالعه موردی همدان، ایران

نوع مقاله : مقاله پژوهشی

نویسندگان
دانشکده مهندسی معدن، دانشگاه صنعتی اصفهان، اصفهان، ایران
10.22071/gsj.2026.567347.2240
چکیده
لیتیم به‌عنوان یکی از عناصر راهبردی و حیاتی در صنایع باتری‌سازی و فناوری‌های انرژی پاک، از اهمیت اقتصادی و استراتژیک بالایی برخوردار است. هدف این پژوهش، شناسایی مناطق مستعد کانی‌سازی لیتیم در بخشی از پهنه سنندج–سیرجان (برگه ۱:۱۰۰٬۰۰۰ همدان) با استفاده از داده‌های ژئوشیمیایی رسوبات آبراهه‌ای است. این منطقه به‌دلیل پیشینه زمین‌ساختی پیچیده و تنوع بالای سنگ‌های آذرین، دگرگونی و رسوبی، از پتانسیل مناسبی برای کانی‌سازی لیتیم برخوردار است. در این پژوهش، داده‌های ژئوشیمیایی ابتدا پیش‌پردازش شده و سپس با استفاده از رویکردی ترکیبی شامل میانگین وزنی بر اساس مساحت واحدهای سنگ‌شناسی، تصحیح رقیق‌شدگی، تحلیل عاملی مرحله‌ای، شاخص چشم‌انداز نقشه‌برداری ژئوشیمیایی و مدل‌سازی فرکتالی عیار-مساحت مورد پردازش و تفسیر قرار گرفتند. مقایسه نتایج نشان داد که روش فرکتالی عیار-مساحت در تفکیک دقیق بی‌هنجاری‌های ژئوشیمیایی لیتیم از زمینه و شناسایی پهنه‌های امیدبخش، عملکرد بهتری نسبت به روش تصحیح رقیق‌شدگی دارد. نتایج نهایی گویای آن است که مهم‌ترین مناطق با پتانسیل بالای کانی‌سازی در بخش‌های باختری و جنوب‌باختری منطقه‌ مورد مطالعه متمرکز شده‌اند و با واحدهای سنگی پگماتیت-گرانیت و کوردیریت هورنفلس همخوانی شایان‌توجهی دارند. این پژوهش نشان می‌دهد که استفاده‌ از رویکرد حوضه‌های آبریز و مدل‌های فرکتالی در بررسی ژئوشیمیایی رسوبات آبراهه‌ای کارایی بالایی در اکتشاف هدفمند لیتیم دارد.
کلیدواژه‌ها
موضوعات

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دوره 36، شماره 3 - شماره پیاپی 141
پاییز 1405، سال سی‌ و ششم، شماره 3، پیاپی 141
پاییز 1405
صفحه 103-118