Hydrothermal alteration mapping and structural features in the Ain Smara basin, Constantine (Northeastern Algeria): contribution of Landsat OLI8 data


Rebouh N., Oudni A., Khiari A., Benabbas C., ÖZGÜR N.

ARABIAN JOURNAL OF GEOSCIENCES, vol.14, no.21, 2021 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 21
  • Publication Date: 2021
  • Doi Number: 10.1007/s12517-021-08487-0
  • Title of Journal : ARABIAN JOURNAL OF GEOSCIENCES
  • Keywords: Remote sensing, Ain Smara, Lineament, Hydrothermal alteration, Mineralization, REFLECTANCE, INTEGRATION, FAULT, FLOW

Abstract

The geological study of specific basins located in the East of Algeria seems essential in the regional geological context; thus, within the framework of the Maghrebides geology, several authors have carried out geological investigations about these basins among which post-orogenic and post-alpine restructuring has seen the establishment of systems of large fault zones whose geometrical and geo-kinematic parameters are far from being known. The Ain Smara basin is an example of structures which seem to evolve in a still active tectonic corridor and interconnected with seismic faults. Our study area is characterized by a hydrothermal aspect, whose springs were scattered all over the place, which may be at the origin of a part of the mineralization in the Constantine region such as the geological deposits of lead, zinc, and onyx. Remote sensing seems to be a reliable source of data on the one hand and also to map the hydrothermal formations in the finding basin on the other hand. The drawing up of the lineament map using remote sensing and the overlay with the actual fault map show that the areas with a high density of faults and lineaments are the ones that experience the most considerable hydrothermal alteration.