Lithological discrimination and mineralogical mapping using Landsat-8 OLI and ASTER remote sensing data: Igoudrane region, jbel saghro, Anti Atlas, Morocco

被引：9

作者：

Baid, Soukaina ^{[1
]}

Tabit, Abdelhalim ^{[1
]}

Algouti, Ahmed ^{[1
]}

Algouti, Abdellah ^{[1
]}

Nafouri, Imane ^{[1
]}

Souddi, Sabir ^{[1
]}

Aboulfaraj, Abdelfattah ^{[1
]}

Ezzahzi, Salma ^{[1
]}

Elghouat, Akram ^{[1
]}

机构：

[1] Univ Cadi Ayyad, Fac Sci Semlalia, Dept Geol, Geosci Geotourism Nat Hazards & Remote Sensing Lab, BP 2390, Marrakech 40000, Morocco

来源：

HELIYON | 2023年 / 9卷 / 07期

关键词：

Lithological discrimination; Mineralogical mapping; Alteration; BR; PCA; MNF; ICA; XRD; Reflectance spectrometry; SPACEBORNE THERMAL EMISSION; REFLECTION RADIOMETER ASTER; CENTRAL EASTERN DESERT; COMPUTER-PROGRAM; BASEMENT ROCKS; SWIR DATA; AREA; ZONES; EXTRACTION; OPHIOLITE;

D O I：

10.1016/j.heliyon.2023.e17363

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This study aims to delineate the lithological formations, in addition to a mineralogical mapping comparing between the ASTER and Landsat-8 OLI sensors in the Igoudrane region. The research was accomplished using BR along with spectral profiles of minerals, PCA, MNF, ICA, XRD, and reflectance spectrometry. The BR measured with ASTER revealed the presence of amphibole, illite, smectite, muscovite, phengite, basic degree index SiO2, calcite, chlorite, epidote, dolomite, hydroxides, and ferrous silicates. Furthermore, Landsat-8 OLI BR highlighted areas with oxides, hydroxides, and laterite. The spectral profiles of minerals showed their absorption in the VNIR and SWIR regions. The muscovite and illite (phyllic alteration) are distinguished by Al-OH absorption at 2.20 & mu;m. The argillitic alteration is additionally defined by muscovite, illite, and Kaolinite, where Kaolinite has a high absorption at 0.9 & mu;m. Chlorite and carbonates characterized the propylitic alteration zone, with an absorption ranging between 2.3 & mu;m and 2.35 & mu;m due to CO3 and Mg-OH compositions. The oxidation (hematite and jarosite) was distinguished by absorption near 0.95 & mu;m and 2.3 & mu;m, respectively, whereas the goethite spectral profile exhibits absorption near 1.4 & mu;m and 2.2 & mu;m. The absorption of smectite is 1.4 & mu;m, near 2.2 & mu;m. The amphibole had absorption near 1.4 & mu;m and 2.3 & mu;m, whereas the pyroxene had absorption near 1.4 & mu;m and 2.3 & mu;m. The first three components of PCA, MNF, and ICA showed the highest eigenvalues and gave an appreciable discrimination of the lithologies, especially with ASTER. Moreover, the XRD quantified the mineralogy of the rocks, which were compared to the BR of ASTER. The reflectance spectrometry also provided alteration minerals, such as muscovite, phengite, illite, Fe-Mg chlorite, Fe-chlorite, iron oxides, hydroxides, hornblende, and calcite. Overall, the methodology adopted has shown great performance and strong potential for mapping alteration areas and lithological discrimination in similar arid regions.

引用

页数：27

共 87 条

[21] Using remote sensing data for geological mapping in semi-arid environment: a machine learning approach [J].