Estudio de la composición mineralógica en formas del relieve de baja pendiente mediante imágenes ASTER en la cuenca del Duero (León, España)

  1. Eduardo García-Meléndez 1
  2. A. Báscones 1
  3. Montserrat Ferrer-Julià 1
  4. María Mercedes Suárez Barrios 2
  5. Elena Colmenero Hidalgo 1
  1. 1 Universidad de León

    Universidad de León

    León, España


  2. 2 Universidad de Salamanca

    Universidad de Salamanca

    Salamanca, España


Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2021

Issue: 18

Pages: 539

Type: Article

More publications in: Geotemas (Madrid)


This study evaluates the use of ASTER (Advanced Spaceborne Thermal Emission Reflection Radiometer) images for mapping purposes associated with mineral compositions and their relative abundances in flat and gently sloping free crop cultiva- ted areas in the Northwestern Duero Basin. Several image band ratios have been applied to the ASTER multispectral set corresponding to the visible and near-infrared (VNIR) and to the short-wave infrared (SWIR) wavelengths. These band ratios enhance the absorption features related to both electronic and vibrational processes corresponding to iron oxides minerals and phyllosilicates minerals respectively. The obtained results show that the northern and westernmost areas with Paleozoic basement, Neogene and Plio-Quaternary sediments, iron oxides minerals are more frequent. On the other hand, in the Easter- nmost area, characterized by the Quaternary Tuerto and Órbigo river terraces, extensive areas show the possible existence of chlorite and Kaolinite because of the presence of the 2,3 μm absorption feature, and montmorillonite and illite with the 2,2 μm absorption feature. This information could be useful for geological, lithological and mineral prospection mapping in almost flat areas, where the lack of outcrops is a problem.