Scholarlink

<p>A multiscale fracturing study was conducted on the Early Jurassic carbonates of the Middle Atlas to unravel the complexities of fracture networks. Satellite imagery analysis identified 112 lineaments predominantly oriented NE–SW, NW–SE, and E–W. At the outcrop scale, a one-dimensional (1D) analysis revealed a dominance of small fractures, with the majority measuring less than 20 cm in length. The fracture size distribution follows a power-law, indicating scale-invariant behavior where smaller fractures are more abundant than larger ones. Furthermore, a positive correlation between bed thickness and fracture spacing was identified, suggesting mechanical and lithological controls on fracture growth. Two-dimensional (2D) analysis revealed a network of widely interconnected fractures, primarily characterized by Y-nodes and X-nodes, which facilitate efficient fluid flow. The fracture intensity varied across different sites, reflecting spatial heterogeneity in fracture occurrence. Four principal fracture sets were identified, related to Atlas tectonic compression. Two later, non-systematic sets intersect the existing sets and are attributed to Neogene and Quaternary tectonic phases. The NW–SE fractures are well-connected, forming a highly complex network dominated by Y-nodes, controlling the groundwater circulation in the Middle Atlas.</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

Multiscale fractures network analysis in the Liassic carbonates of the Tabular Middle Atlas, Morocco: hydrogeological reservoir involvement

  • 期刊论文

  • 发表日期：

    2025年3月20日

查看全文
  • Toufik Khouya,
  • Hmidou El Ouardi,
  • Mansour H. Al-Hashim

摘要

A multiscale fracturing study was conducted on the Early Jurassic carbonates of the Middle Atlas to unravel the complexities of fracture networks. Satellite imagery analysis identified 112 lineaments predominantly oriented NE–SW, NW–SE, and E–W. At the outcrop scale, a one-dimensional (1D) analysis revealed a dominance of small fractures, with the majority measuring less than 20 cm in length. The fracture size distribution follows a power-law, indicating scale-invariant behavior where smaller fractures are more abundant than larger ones. Furthermore, a positive correlation between bed thickness and fracture spacing was identified, suggesting mechanical and lithological controls on fracture growth. Two-dimensional (2D) analysis revealed a network of widely interconnected fractures, primarily characterized by Y-nodes and X-nodes, which facilitate efficient fluid flow. The fracture intensity varied across different sites, reflecting spatial heterogeneity in fracture occurrence. Four principal fracture sets were identified, related to Atlas tectonic compression. Two later, non-systematic sets intersect the existing sets and are attributed to Neogene and Quaternary tectonic phases. The NW–SE fractures are well-connected, forming a highly complex network dominated by Y-nodes, controlling the groundwater circulation in the Middle Atlas.