Scholarlink

<p>The Mougueur El Bour Massif, within the Hight Atlas, represents a transitional zone between the Meseta and the Anti-Atlas. Its geological position has made it the subject of various studies that&#xa0;aimed at understanding the Variscan Orogeny in Morocco. This study aims to produce a detailed geological map of Mougueur Massif using spatial analysis techniques. The adopted methodology is based on the integration of ASTER-GDEM data with Landsat OLI and Sentinel-2A satellite imagery. For mapping structural lineaments, we employed two complementary approaches: automatic and manual extraction. Regarding lithological mapping, after spectral enhancement of lithological units, the classification was carried out using two supervised classification methods: maximum likelihood classification and support vector machine (SVM). The results of this study revealed four principal fracture systems, oriented N–S, NE–SW, E–W, and NW–SE. These orientations are associated with different phases of Variscan and Alpine cycles. The produced lithological maps demonstrated the high accuracy of the supervised SVM classification, with a Kappa coefficient of 0.96 for Landsat OLI + DEM and 0.99 for Sentinel 2A + DEM. Regarding overall accuracy, the Landsat OLI + DEM data achieved 96.60%, while Sentinel 2A + DEM reached 99.66%. The integration of structural and lithological data facilitated the production of a detailed geological map. Additionally, it reveals a complex litho-structural framework characterized by intense fracturing, especially along thrust zones.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Geological mapping of the Paleozoic Mougueur El Bour Massif, Eastern High Atlas, Morocco: integrating ASTER-GDEM data with Landsat OLI and Sentinel-2A images

  • 期刊论文

  • 发表日期：

    2025年8月21日

查看全文
  • Ibtissame Bentahar,
  • Hicham Si Mhamdi,
  • Mohammed Raji

摘要

The Mougueur El Bour Massif, within the Hight Atlas, represents a transitional zone between the Meseta and the Anti-Atlas. Its geological position has made it the subject of various studies that aimed at understanding the Variscan Orogeny in Morocco. This study aims to produce a detailed geological map of Mougueur Massif using spatial analysis techniques. The adopted methodology is based on the integration of ASTER-GDEM data with Landsat OLI and Sentinel-2A satellite imagery. For mapping structural lineaments, we employed two complementary approaches: automatic and manual extraction. Regarding lithological mapping, after spectral enhancement of lithological units, the classification was carried out using two supervised classification methods: maximum likelihood classification and support vector machine (SVM). The results of this study revealed four principal fracture systems, oriented N–S, NE–SW, E–W, and NW–SE. These orientations are associated with different phases of Variscan and Alpine cycles. The produced lithological maps demonstrated the high accuracy of the supervised SVM classification, with a Kappa coefficient of 0.96 for Landsat OLI + DEM and 0.99 for Sentinel 2A + DEM. Regarding overall accuracy, the Landsat OLI + DEM data achieved 96.60%, while Sentinel 2A + DEM reached 99.66%. The integration of structural and lithological data facilitated the production of a detailed geological map. Additionally, it reveals a complex litho-structural framework characterized by intense fracturing, especially along thrust zones.