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Geological interpretation using multivariate K -means and robust factor analysis in Dezak area, SW Iran
Environmental Earth Sciences ( IF 2.8 ) Pub Date : 2021-01-08 , DOI: 10.1007/s12665-020-09305-8
Ghazal Hajnajafi , Alireza Jafarirad , Peyman Afzal , Seyed-Jamal Sheikh-Zakariaee

The Dezak limestone area, located SW Iran, is a potential site for industrial survey project of Precipitated Calcium Carbonate (PCC). Economic geology studies and geochemical implications of the area involve a high-risk level given the high purity of the limestone and the amount of penalty elements in the deposit. Generally, considering the compositional properties of geochemical data and using multivariate methods for a total of 527 composite samples showed that the data can be classified into five classes based on geological characteristics. According to K-means analysis, the grades of CaCO3 and SiO2 were 96.066% and 1.4754% within the second zone, and 94.5914% and 2.3278% within the fifth zone, respectively. Therefore, these zones were recognized as the first and second highest priorities having in common 165 and 133 samples on the specific geological units of Kdl and Kdld, respectively. Geochemical classification confirmed the geological units and variations. The priorities may preferably change depending on the time, place, plant requirements, access position, and the concentration of MgO and SiO2. Results from the robust factor analysis indicated that CaCO3 enrichment was mainly associated with depletion of SiO2 and Fe2O3 as well as P2O5 and, to some extent, MgO. This indicates the suitability of the selected study area, as major penalties are in contrast to CaCO3 enrichment. Geological and geochemical studies suggest different types of crystallized limestone and micritic limestone as the best zones for extraction. Therefore, geological properties were verified using multivariate K-means and factor analysis in the Dezak area.



中文翻译:

伊朗西南德扎克地区使用多元K值的地质解释和鲁棒因子分析

位于伊朗西南部的Dezak石灰岩地区是沉淀碳酸钙(PCC)工业调查项目的潜在场所。该地区的经济地质研究和地球化学意义涉及高风险级别,因为石灰石的纯度很高,而且矿床中的罚款元素也很多。通常,考虑到地球化学数据的组成特性,对总共527个复合样品使用多元方法显示,根据地质特征可将数据分为五类。根据K均值分析,CaCO 3和SiO 2的等级第二区分别为96.066%和1.4754%,第五区分别为94.5914%和2.3278%。因此,这些区域被认为是在K d lK d ld的特定地质单位上分别具有165个和133个样本的第一和第二最高优先级。地球化学分类证实了地质单位和变化。优选地,优先级可以根据时间,地点,工厂要求,进入位置以及MgO和SiO 2的浓度而改变。稳健因素分析的结果表明,CaCO 3的富集主要与SiO 2和Fe 2 O的消耗有关。3以及P 2 O 5以及一定程度的MgO。这表明所选研究区域的适用性,因为主要的处罚措施与CaCO 3富集相反。地质和地球化学研究表明,不同类型的结晶石灰岩和微晶石灰岩是最佳的开采区。因此,在Dezak地区使用多元K均值和因子分析来验证地质性质。

更新日期:2021-01-08
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