[First Hit]

Datapages, Inc.Print this page

Abstract: Contribution of LANDSAT Imagery to Geologic Prospecting over Iberian Peninsula

Jean-Claude Rivereau

Since LANDSAT I was launched, BEICIP has carried out, for various petroleum and mining companies, six major geologic studies using satellite imagery. Some of these surveys, such as those concerning the Antarctic and the Mediterranean areas which were executed in cooperation with the Institut Francais du Petrole, cover several millions of square kilometers each.

The surveys are typically realized in two stages: (1) a general interpretation carried out at a scale of 1:1,000,000 to obtain the structural scheme of the area on a regional basis; and (2) a more detailed study at a scale of 1:500,000 or 1:200,000 executed over selected areas using digitally processed images with two techniques--Previous HitnonlinearTop stretching for image enhancement and principal components analysis for subtle lithologic discrimination.

The Ibersat Project, carried out over the whole Iberian Peninsula (Spain and Portugal), illustrates the contribution of LANDSAT data to geologic prospecting and petroleum and mineral exploration. These studies have resulted in construction of a morpho-structural map at a scale of 1:1,000,000. Detailed interpretation using stretched and first and second principal component images at a scale of 1:200,000 has been made. This interpretation can be compared with seismic and aeromagnetic maps over part of a sedimentary basin, and with known mineral occurrences in a mining district.

AAPG Search and Discovery Article #90967©1977 GCAGS and GC Section SEPM 27th Annual Meeting, Austin, Texas