Zakly Hanif 'Izzuddin, Zulaikah Siti, Hapsoro Cahyo Aji, Maulida Shofi, Hasan Muhammad Fathur Rouf
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, 65145, Malang, Indonesia.
Department of Civil Engineering, Politeknik Negeri Jakarta, 16425, Depok, Indonesia.
Environ Sci Pollut Res Int. 2024 May 3. doi: 10.1007/s11356-024-33495-4.
Mount Arjuno-Welirang has a geological structure consisting of volcanic breccia, lava, tufan breccia, and tuff. This research focuses on exploring the chemical content of Arjuno-Welirang igneous rocks. The mapping of chemical element content is carried out to provide information on the distribution of Arjuno-Welirang dominant elements which are very important for exploitation and industry. The results of X-ray fluorescence (XRF) analysis of seven igneous rock samples showed that there were Al, Si, P, K, Ca, Ti, V, Cr, Mn, Fe, Cu, Zn, Sr, Ba, Eu, and Re. The dominant elements (Wt% > 10%) are Si (44.4-51.6%), Al (14-19%), Ca (12.1-17.1%), and Fe (12.4-20.4%). In addition, rare earth element REE europium (Eu) content was also found with an average of 0.23 Wt%. The discovery of REE Eu indicates the presence of other REE elements and needs further analysis. The presence of several oxide elements SiO and KO was compared to the surrounding mountains, where SiO indicates a greater content of Bromo-Semeru, while KO is larger than Semeru and smaller than Bromo. This provides an overview of the difference in magma properties, where the results of Arjuno-Welirang igneous rock analysis show alkaline properties while Bromo-Semeru ultrabase. The FeO content of Arjuno-Welirang shows a smaller tendency than Bromo-Semeru. This shows that Arjuno-Welirang magma is magnetically higher than Bromo-Semeru. The average depth of magma from igneous rocks is calculated between ± 147.7 and ± 225.1 km below the earth's surface. These results correlate significantly with KO compounds where the deeper the magma origin of the sample, the higher the KO content.
阿朱诺-韦利朗火山具有由火山角砾岩、熔岩、凝灰岩角砾岩和凝灰岩组成的地质结构。本研究重点探索阿朱诺-韦利朗火成岩的化学成分。进行化学元素含量测绘以提供对阿朱诺-韦利朗主要元素分布的信息，这些元素对开采和工业非常重要。对七个火成岩样品的X射线荧光（XRF）分析结果表明，存在铝、硅、磷、钾、钙、钛、钒、铬、锰、铁、铜、锌、锶、钡、铕和铼。主要元素（重量百分比>10%）为硅（44.4 - 51.6%）、铝（14 - 19%）、钙（12.1 - 17.1%）和铁（12.4 - 20.4%）。此外，还发现了稀土元素铕（Eu）的含量，平均为0.23重量百分比。铕稀土元素的发现表明存在其他稀土元素，需要进一步分析。将几种氧化物元素二氧化硅（SiO）和氧化钾（KO）的含量与周围山脉进行了比较，其中二氧化硅表明布罗莫-塞梅鲁山的含量更高，而氧化钾比塞梅鲁山的大且比布罗莫山的小。这提供了岩浆性质差异的概述，其中阿朱诺-韦利朗火成岩分析结果显示为碱性性质，而布罗莫-塞梅鲁山为超基性。阿朱诺-韦利朗火山的氧化亚铁（FeO）含量显示出比布罗莫-塞梅鲁山更小的趋势。这表明阿朱诺-韦利朗火山的岩浆磁性高于布罗莫-塞梅鲁山。火成岩岩浆的平均深度计算为地表以下±147.7至±225.1千米之间。这些结果与氧化钾化合物显著相关，样品的岩浆起源越深，氧化钾含量越高。
