NDLI: Indication of geohazard risk and economic value of gypsum deposits in the Tertiary Sivas Basin (Turkey) using ASTER and Landsat ETM+ images

Content Provider	IEEE Xplore Digital Library
Author	Kavak, K.S.
Copyright Year	2005
Description	Author affiliation: Dept. of Geol. Eng., Cumhuriyet Univ., Sivas, Turkey (Kavak, K.S.)
Abstract	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 decollement levels. Sivas Basin also has remarkable structural expressions 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, data fusion and decorrelation stretching methods were applied to highlight Oligocene gypsum deposits of the basin. These continental deposits host celestite and barite mineralization of great industrial importance. These gypsum deposits also carry a geohazard impact, namely their propensity to lead to collapses, particularly on the eastern side of the city of Sivas. Because the present study aids in the discrimination of these gypsum occurrences from other geological units, it may also lead to geohazard-risk reduction.
Starting Page	573
Ending Page	576
File Size	862577
Page Count	4
File Format	PDF
ISBN	0780389778
DOI	10.1109/RAST.2005.1512633
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-09
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Earth Sea surface Satellites Geology Mineralization Cities and towns Belts Decorrelation Mining industry Remote sensing
Content Type	Text
Resource Type	Article

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