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Recognition of gypsum geohorizons in the Sivas Basin (Turkey) using ASTER and Landsat ETM+ images

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The Tertiary Sivas Basin contains widespread, tectonically deformed deposits of massive Oligocene gypsum. This unit is one of the most important factors controlling the tectono‐stratigraphic evolution of the basin insofar as these deposits are interpreted as décollement levels. As a considerable fold and thrust belt, the Sivas Basin also has a remarkable structural expression within these evaporite deposits, as seen in satellite images aided by colour composites. Because of the arid climatic conditions of the region, the basin provides ease of interpretation geologically in terms of the synoptic‐view capability of broad‐band multispectral data sets, such as ASTER and Landsat ETM+. In this study, various processing methods — such as data fusion and decorrelation stretching — were applied to highlight Oligocene gypsum deposits of the basin.
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Document Type: Research Article

Affiliations: Cumhuriyet Üniversitesi, Jeoloji Mühendisliği Bölümü, 58140 Sivas/Turkey

Publication date: 2005-10-20

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