Mapping evaporate minerals by ASTER

Oztan, N. Serkan
Süzen, Mehmet Lütfi
Evaporate minerals are important industrial raw materials that have been used in diverse industries for many years. As one of the most extensively used evaporate minerals, gypsum is an important raw material in the construction, agriculture, textile, dentistry and chemical industries, resulting in a massive increase in demand of these minerals in recent years. The aim of this study was to demonstrate the responses of common remote sensing mapping techniques and further develop some of them while evaluating their success in well-known gypsum outcrops using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) imagery. The region selected for the test area was Ankara Bala, which has gypsum outcrops with operational mines mapped in detailed studies by the General Directorate of Mineral Research and Exploration (MTA). The methods of band ratioing (BR), decorrelation stretch (DS), feature-oriented principal component analysis (FOPCA) and thermal indices were tested to map the mineral gypsum. For the BR method, the ratio 4: 9, for DS the Red-Green-Blue (RGB) composite 1-4-8, for FOPCA Principal Component (PC) 3 and for thermal infrared (TIR) indices the previously known Quartz Index (QI) modified as the Sulfate Index (SI) were found to be successful in general terms for evaporate mapping. For an absolute accuracy assessment the results of these methods were checked in the field and, from the areas where the results showed common anomalies, samples were taken for field spectrometry analyses and X-ray analyses. For a relative accuracy assessment all of the results were compared with each other to evaluate the differences and their successes. We found that all of the methods were successful in mapping evaporates; however, despite its lower spatial resolution, the TIR data from ASTER when used as the SI yielded a more refined result than the other methods.


Evaporate mapping in Bala region (Ankara) by remote sensing techniques
Öztan, Nihat Serkan; Süzen, Mehmet Lütfi; Department of Geological Engineering (2008)
Evaporate minerals were very important raw materials in very different and broad industries for years. Since gypsum became important raw material especially in construction industry as plaster, demand to these minerals rises each following year. The aim of this thesis is to map out these industrial raw materials by using remote sensing techniques. Ankara Bala region has very rich Gypsum sites and this region is showed as one of the best gypsum potential sites of Turkey according to the studies of MTA so tha...
Estimation of rock mass rating values with geostatistical analysis
Özkan, Esma Selma; Erkayaoğlu, Mustafa; Department of Mining Engineering (2019)
The raw material of many goods, products, and equipment used by humankind on earth or even in space are obtained from extracted and enriched minerals from the surface or underground mines. A large proportion of the energy produced and used worldwide are derived from carbon-containing materials that are extracted from mining operations. This points out that the demand for these materials is not expected to decrease for human beings to sustain their existence on earth and may be in space. As this requirement ...
Laboratory investigation of the treatment of chromium contaminated groundwater with iron-based permeable reactive barriers
Uyuşur, Burcu; Ünlü, Kahraman; Department of Environmental Engineering (2006)
Chromium is a common groundwater pollutant originating from industrial processes such as metal plating, leather tanning and pigment manufacturing. Permeable reactive barriers (PRBs) have proven to be viable and cost-effective systems for remediation of chromium contaminated groundwater at many sites. The purpose of this research presented in this thesis is to focus on two parameters that affect the performance of PRB on chromium removal, namely the concentration of reactive media and groundwater flux by ana...
Formaldehyde Selectivity in Methanol Partial Oxidation on Silver: Effect of Reactive Oxygen Species, Surface Reconstruction, and Stability of Intermediates
Karatok, Mustafa; Şensoy, Mehmet Gökhan; Vovk, Evgeny I.; Toffoli, Hande; Toffoli, Daniele; Ozensoy, Emrah (2021-01-01)
Selective oxidation reactions on heterogeneous silver catalysts are essential for the mass production of numerous industrial commodity chemicals. However, the nature of active oxygen species in such reactions is still debated. To shed light on the role of different oxygen species, we studied the methanol oxidation reaction on Ag(111) single-crystal model catalyst surfaces containing two dissimilar types of oxygen (electrophilic, Oe and nucleophilic, On). X-ray photoelectron spectroscopy and low energy elect...
Linking impact-related progeny sizes of cement clinker to modes of single-particle breakage
Camalan, Mahmut; Hoşten, Çetin (EDP Sciences; 2016-09-28)
Fragmentation of particulate solids is an important process in many industrial activities, particularly in the mineral, cement and glass industries to comminute the raw materials to a required size. Understanding of processes and mechanisms responsible for fragmentation of particulate solids is a hard task. This may bring great precision for designing and controlling the comminution process. This work aims to contribute to understanding fragmentation of cement clinker particles under impact loading. For thi...
Citation Formats
N. S. Oztan and M. L. Süzen, “Mapping evaporate minerals by ASTER,” INTERNATIONAL JOURNAL OF REMOTE SENSING, pp. 1651–1673, 2011, Accessed: 00, 2020. [Online]. Available: