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Proceedings Paper

Thematic cartography in Tigrai Province
Author(s): A. Marini; Maria Teresa Melis
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Paper Abstract

Tigre Province is in northern Ethiopia between Eritrea on the north and east, and Begemdir and Wollo on the south. The area is comprised of five main physiographic units: Danakil Depression, Escarpment, Tigre and Eritrea Plateau, Semien Mountains and the Western Lowlands. The first two drain into the closed drainage basin of Dallol whilst the other three drain into the Nilo Through the Tezeke, Mareb and Barka River. Three main rock complexes build up the prospect area. The metamorphic and intrusive rocks of the Precambrian basement, the Paleozoic-Mesozoic Sediments and Tertiary Trap Volcanics, and the Young Sedimentary and Volcanic Rocks of the Danakil Depression. The only existing geological data on this area is represented by maps assembled from different sources on very large scale. Thanks to interactive computer processing, it is becoming possible to trace, on the relief as it appears on the display unit, lithological boundaries and the faults which affect them, measuring each of their geometric characteristics. Image processing coupled with pattern recognition programs has made it possible to take into consideration landscape units combining morphological, botanical and geological signatures, and more generally to quantify the morphological elements. Satellite images (Landsat TM and Spot XS) have been processed to produce thematic maps.

Paper Details

Date Published: 30 December 1994
PDF: 7 pages
Proc. SPIE 2320, Geology from Space, (30 December 1994); doi: 10.1117/12.197291
Show Author Affiliations
A. Marini, Univ. di Cagliari (Italy)
Maria Teresa Melis, Univ. di Cagliari (Italy)

Published in SPIE Proceedings Vol. 2320:
Geology from Space
Eugenio Zilioli, Editor(s)

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