Spatial modelling of zonality elements based on compositional nature of geochemical data using geostatistical approach: a case study of Baghqloom area, Iran | ||
| Journal of Mining and Environment | ||
| مقاله 12، دوره 9، شماره 1، فروردین 2018، صفحه 153-167 اصل مقاله (1.93 M) | ||
| نوع مقاله: Case Study | ||
| شناسه دیجیتال (DOI): 10.22044/jme.2017.5904.1405 | ||
| نویسندگان | ||
| S. Talesh Hosseini1؛ O. Asghari* 2؛ Seyed R. Ghavami Riabi1 | ||
| 1Faculty of Mining, Petroleum & Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran | ||
| 2Simulation and Data Processing Laboratory, Department of Mining, College of Engineering, University of Tehran, Tehran, Iran | ||
| چکیده | ||
| Due to the existence of a constant sum of constraints, the geochemical data is presented as the compositional data that has a closed number system. A closed number system is a dataset that includes several variables. The summation value of variables is constant, being equal to one. By calculating the correlation coefficient of a closed number system and comparing it with an open number system, one can see an increase in the values of the closed number system, which is false. Such features of this data prevent the application of standard statistical techniques to process the data. Therefore, several methods have been proposed for transforming the data from closed to open number systems. There are various geostatistical methods consisting of estimation and simulation methods in order to model a deposit. Geostatistical simulations can produce various models for a deposit with different probability percentages. The most applicable geostatistical simulation method is the sequential Gaussian simulation technique, which is highly flexible. In this work, 392 Litho-geochemical data of the Baghqloom region of Kerman in Iran consisting of 20 elements were at first converted using an open number system. Afterwards, the elements that were helpful for exploring the area and were normally standard were simulated for 100 times. After the simulations, the valid output was chosen using geostatistical validation. The maps derived from the simulations revealed the enriched concentrations of mineralization elements in the central regions. | ||
| کلیدواژهها | ||
| Compositional Data؛ Closed and Open Number System؛ Geostatistical Simulation؛ Sequential Gaussian Simulation؛ Baghqloom-Kerman | ||
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