Journal of the Geological Society of India ( IF 1.3 ) Pub Date : 2021-03-09 , DOI: 10.1007/s12594-021-1676-4 Ranjana Gore , Abhilasha Mishra , Ratnadeep Deshmukh
The earth crust is made up of variety of minerals. These minerals are having very significant applications in our day today life. The various studies, characterizing physical, chemical, electrical, structural properties, have been carried out on the Lonar crater for studying mineralogy, surface morphology and geology but has not been done by remote sensing technology. So, the proposed work focused on exploring the mineralogy at the Lonar crater by using high resolution hyperspectral imageries. The spectral reflectance of minerals was characterized by using FieldSpec4 spectroradiometer. The minerals at Lonar crater were explored by performing preprocessing and spectral analysis. The techniques used in the work are Spectral Angle Mapper and Spectral Feature Fitting. The results of the work marked the presence of pigeonite and augite at Lonar crater which indicates that this crater is the result of extrusive volcanic activity. Also, the presence of augite underneath basaltic igneous rocks as the rock type of Lonar crater. The salinity of the Lonar lake is proved by the presence of mirabilite and salt. Thus, the important results of this work are presence of minerals quartz, actinol, jarosite, pigeonite, augite, albite, mirabilite and scolecite. The significance of these minerals related to the crater is discussed here. It also validated the existence of these minerals which were identified through the previous geological, chemical, physical, electrical and magnetic studies and the minerals pyrite, chlorite, richter, illite, limonite, allanite, amphibolite and margarite were also identified.
中文翻译:
利用高光谱遥感探索月球陨石坑的矿物学
地壳由多种矿物组成。这些矿物质在我们今天的生活中具有非常重要的应用。已经在Lonar陨石坑上进行了表征物理,化学,电气,结构特性的各种研究,以研究矿物学,表面形态和地质,但尚未通过遥感技术完成。因此,拟议的工作着重于通过使用高分辨率高光谱图像探索月球陨石坑的矿物学。矿物的光谱反射率通过使用FieldSpec4光谱仪进行表征。通过进行预处理和光谱分析,探索了月球陨石坑中的矿物。工作中使用的技术是“光谱角度映射器”和“光谱特征拟合”。这项工作的结果表明在月球陨石坑中存在鸽皮石和a石,这表明该陨石坑是火山喷发活动的结果。同样,玄武岩火成岩下面的辉石的存在是月球陨石坑的岩石类型。芒硝和盐的存在证明了Lonar湖的盐度。因此,这项工作的重要结果是存在矿物石英,act石,黄钾铁矾,皂石,ug石,钠长石,芒硝和闪锌矿。这些与火山口有关的矿物的重要性在此进行了讨论。它还验证了通过先前的地质,化学,物理,电和磁学研究鉴定出的这些矿物的存在,并且还鉴定了黄铁矿,绿泥石,富勒石,伊利石,褐铁矿,尿囊石,闪石和玛格石矿物。