Investigation of Spectral Characteristics of Carbonate Rocks – A Case Study on Posht Moleh Mount in Iran

Abstract

Abstract. Recent developments in the image processing approaches and the availability of multi and/or hyper spectral remote sensing data with high spectral, spatial and temporal resolutions have made remote sensing technique of great interest in investigations of geological sciences. One of the biggest advantage of the application of remote sensing in geology is recognizing the type of unknown rocks and minerals. In this study, an investigation on spectral features of carbonate rocks (i.e. calcite, dolomite, and dolomitized calcite) were done in terms of main absorptions, the reasons of those absorptions and comparison of these absorption with Johns Hopkins University (JHU) spectral library and laboratory spectra of Analytical Spectral Devices (ASD) instrument. For this purpose, we used the VNIR and SWIR bands of ASTER and OLI datasets. Finally, we applied the Spectral Analyst Algorithm in order to comparison between the obtained spectra from ASTER dataset and carbonate spectra of JHU spectral library.

Extracting Information on Rocky Desertification from Satellite Images: A Comparative Study

“…On the other hand, as shown in Table 4, the "red-edge" band of Sentinel-2B image data is spectrally more continuous than that of Landsat-8 [23], which is the basis for the accurate calculation of FVC [25], indirectly leading to more accurate mapping of rocky desertification. Although the Gaofen-6 image also included the "red-edge" band, it has lower spatial resolution than the Sentinel 2B image and lacks the SWIR1 band where carbonate rocks usually have higher reflectance than in the blue band [58].…”

A Fully-Automated Framework for Mineral Identification on Martian Surface Using Supervised Learning Models

“…15. Mg-Carbonates are characterized by combining 2.3 and 2.5 micrometers because of C-O bond vibration overtones, with Fe/Ca Carbonates dip concentrated at 2.33 and 2.53 micrometers and Mg abundant Carbonates shifted to 2.3 and 2.5 micrometers and hydration band at 1.93 micrometer [34]. Nonetheless, these MICA spectra typically exhibit the same absorption at 1.93, 2.3, and 2.5 micrometers as the MICA library spectrum, shown in Fig.…”

“…Gale Crater is a 150-kilometerwide impact crater that occurred near the early Hesperian time stratigraphic outline. Earlier studies have discovered extensive detections of mafic minerals and hydrated silicates in both bedrock and sediments, as well as temporal changes in water chemistry as evidenced by the presence of chloride salts [33], [34]. The 119 km-diameter Columbus Crater on Mars is situated in the Terra Sirenum, a massive region in the southern hemisphere encompassing latitudes 10°to 70°S outh and 110°to 180°West.…”