تعیین زون های آنومالی ژئوشیمیایی کروم در منطقه ارزوئیه، استان هرمزگان با استفاده از روش فرآیند تحلیل سلسله مراتبی (AHP)

زمین شناسی اقتصادی

مقاله 3، دوره 10، شماره 1 - شماره پیاپی 18، 1397، صفحه 47-59   

نوع مقاله: علمی- پژوهشی

شناسه دیجیتال (DOI): 10.22067/econg.v10i1.48872

نویسندگان

مهرداد براتی^{* 1}؛ اکرم استادحسینی¹؛ ایرج رساء²؛ محمد یزدی²

¹بوعلی سینا

²شهید بهشتی

چکیده

منطقه ارزوئیه در مرز دو استان کرمان و هرمزگان قرار دارد. در این منطقه اکتشافات رسوبات آبراهه ای در مقیاس 1:100000 انجام شد. مهمترین عنصر اکتشافی در این منطقه کروم است که در اصل باید با پریدوتیت ها و دیگر سنگ های اولترابازیک همراه باشد؛ ولی در منطقه مقادیر بالای کروم با سازندهای تخریبی همخوانی دارد. برای تعیین زون های آنومالی فلزی و حذف آنومالی های کاذب می‌توان از چند روش استفاده کرد که در این پژوهش از روش شاخص آماری AHP و سیستم اطلاعات جغرافیایی استفاده شد. در این راستا، سه معیار لیتولوژی، ژئوشیمی عنصری و زمین‌ساخت در نظرگرفته و سپس با استفاده از این مدل، عوامل مربوطه ارزیابی و تعیین وزن شد. در پایان برای تهیه نقشه نهایی، لایه های اطلاعاتی این عوامل در محیط GIS تهیه و تلفیق شد. نتایج حاصل از بررسی نقشه آنومالی نشان داد که این روش باعث حذف آنومالی های کاذب در این منطقه می شود.

کلیدواژه‌ها

آنومالی ژئوشیمیایی کروم؛ رسوبات آبراهه ای؛ ارزوئیه؛ AHP؛ GIS

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