Using stream sediment data to determine geochemical anomalies by statistical analysis and fractal modeling in Tafrash Region, Central Iran

Document Type : Research Paper


1 Department of Mining Engineering,Arak University of Technology

2 PhD student Candidate, Amirkabir University of Technology, Department of Mining and Metallurgical Engineering, Tehran, Iran

3 Department of Mining Engineering, Arak University of Technology, Arak,


Iranian Cenozoic magmatic belt, known as Urumieh-Dokhtar, is recognized as an important polymetallic mineralization which hosts porphyry, epithermal, and polymetallic skarn deposits. In this regard, multivariate analyses are generally used to extract significant anomalous geochemical signature of the mineral deposits. In this study, stepwise factor analysis, cluster analysis, and concentration–area fractal model have been used to delineate geochemical anomalies associated with skarn mineralization, based on Au, Cu, Pb, Zn, Ag, Mo, W, Sn, and As stream sediment data. These results indicate that the Urumieh-Dokhtar belt potentially hosts Au skarn deposits. The hybrid method combining the statistical analysis and C-A fractal model is an effective tool to identify geochemical anomalies


Article Title [فارسی]

استفاده از رسوبات آبراهه ای برای تعیین آنومالی های ژئوشیمیایی بوسیله تحلیل آماری و هندسه فراکتال در منطقه تفرش از ایران مرکزی

Authors [فارسی]

  • فریدون قدیمیi 1
  • محمد قمی 2
  • احسان ملکی 3
1 دانشیار گرو مهندسی معدن دانشگاه صنعتی اراک
2 دانشجوی دکترای دانشگاه صنعتی امیرکبیر مربی آموزشی دانشکده مهندسی معدن دانشگاه صنعتی اراک
3 دانش آموخته کارشناسی ارش دانشگاه صنعتی اراک
Abstract [فارسی]

زون ماگمایی ارومیه دختر در ایران به عنوان یک کمربند چند فلزی شناخته شده است که دارای سنگ میزبان کانسارهای پورفیری، کانسار اسکارن چند فلزی است.در این تحقیق تحلیل آماری چند متغیره برای شناسایی آنومالی های ژئوشیمیایی مورد توجه است.تحلیل های آنالیز فاکتوری مرحله به مرحله ، آنالیز خوشه ای و مدل فراکتال برای شناسایی آنومالی های عناصری چون طلا،مس، سرب، روی، نقره، مولیبدن، تنگستن، قلع و آرسنیک برای کانسارهای اسکارنی مورد تجزیه و تحلیل قرار گرفت و مشخص شد که کمربند ارومیه -دختر میزبان طلا در این منطقه است. به علاوه مشخص شد که تلفیق روش های آماری و مدل فراکتال ابزار های مناسب برای شناسایی آنومالی های ژئوشیمیایی هستند.

Keywords [فارسی]

  • رسوب آبراهه ای
  • تحلیل آماری
  • مدل غلظت -مساحت فراکتال
  • کانسار اسکارن طلا
  • ایران
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