شناسایی و پی‌جویی ناهنجاری‌های زمین‌شیمیایی همراه با کانی‌سازی مس در چهارگوش 1:100000 نطنز (شمال اصفهان)، ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه اصفهان

2 دانشگاه صنعتی اصفهان

چکیده

در نقشه یکصد هزار زمین­شناسی، نطنز در شمال شرق اصفهان و در پهنه ساختاری ارومیه-دختر قرار دارد. این چهارگوش، پنجره مناسبی برای کانی­سازی مس، سرب و روی است. در این پژوهش، توزیع فضایی ناهنجاری های زمین شیمیایی عناصر کانی ساز و عناصر همراه به کمک روش آماری بررسی شدند. در این راستا، حوضه آبریز در محیط سامانه GIS، رسم و پس از رقیق کردن، با روش فرکتال عیار-مساحت، حدآستانه عناصر شناسایی و ناهنجاری ها مشخص شدند. نتایج نمایانگر توزیع مناسب عناصر سرب، روی، آرسنیک و آنتیموان در نزدیکی نشانه­های معدنی مس موجود در منطقه مورد بررسی هستند. علاوه بر این، ناهنجاری­های بخش جنوبی نقشه، می­تواند مکان جدیدی را برای پی جویی های اکتشافی آینده معرفی کند.     

کلیدواژه‌ها

عنوان مقاله [English]

Identification and exploration of geochemical anomalies associated with Cu minerals in Natanz rectangle at 1:100000 scale (north Isfahan), Iran

نویسندگان [English]

  • Zahra Alaminia 1
  • Mahin Mansouri Esfahani 2
  • Seyed Hasad Tabatabaei 2
  • Negar Mahroo Bakhtiari 2
1 University of Isfahan
2 Isfahan University of Technology
چکیده [English]

Natanz, 1:100000 geological map, is located in northeast Isfahan, in the Urumieh-Dokhtar structural zone. This sheet is a prospective area for Cu, Zn and Pb mineralization. Spatial distribution of geochemical anomalies for mineralization was identified; using  pathfinder elements statistic method. The sample from catchment basin technique was applied on stream data. Then threshold elements were recognized and separated anomalies. The results show a good distribution of Pb, Zn, As and Sb elements close to copper index in the Natanz map. Moreover, fractal model used to introduce new anomalies in south portion of map for future exploration prospecting.  

کلیدواژه‌ها [English]

  • Urumieh-Dokhtar
  • Natanz
  • stream sediment
  • Cu minerals
  • fractal

مراجع

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سابقه مقاله

  • تاریخ دریافت: 07 مرداد 1396
  • تاریخ بازنگری: 08 آذر 1396
  • تاریخ پذیرش: 09 دی 1396

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