Lineament analysis from satellite images, north-west of Ankara

Sarp, Gülcan
The purposes of this study are to extract lineaments from satellite images in order to contribute to the understanding of the faults. Landsat image is used for the analysis which is processed for both automated and manual extraction. During manual extraction four methods (filtering, PCA, band rationing and color composites) are used. Comparison of the two output maps indicated that manual extraction produced better results. Manually extracted lineament map is tested with the fault map of the area compiled from eight studies. The accuracy of the lineament map for the whole area is 38.69 % which increases to 50.28 % in the vicinity of North Anatolian Fault Zone (NAFZ). Evaluation of the length, density and orientation of the lineaments indicated that: a) there are fault zones in the area other than the NAFZ, b) Several fault segments are identified in the region which are absent in the fault map due the difficulty in mapping during the field studies; c) the dominant lineament trend is NE-SW (parallel to the NAFZ), however, a second trend is obvious in NW-SE direction.


Geoarchaelogical investigation of central anatolian caravanserais using gis
Ertepınar Kaymakcı, Pnar; Toprak, Vedat; Department of Geological Engineering (2005)
This study comprises analysis of geological, geomorphological constraints that played role in the site selection of caravanserais. In order to do this, 15 caravanserais located along a route from Nevşehir-Aksaray-Konya to Beyşehir were used. The data used in the study include a caravanserai database, lithological maps, and digital elevation model of the area. GIS analyses performed in the study are proximity, visibility, and probability distribution (PDA). The first step is the generation of the ancient tra...
Monitoring of chemical and isotopic compositions of geothermal waters along the North Anatolian fault zone
Süer, Selin; Güleç, Nilgün Türkan; Department of Geological Engineering (2004)
This study aims to determine the chemical (anion-cation) and isotopic compositions (d18O-dD-3H) of the geothermal waters along the North Anatolian Fault Zone (NAFZ) and highlight any possible seismicity-induced temporal variations during the course of two years (2002-2003) monitoring programme. The geothermal sites are alligned along a 800 km transect of the NAFZ and are, from west to east, Yalova, Efteni, Bolu, Mudurnu, Seben, Kursunlu, Hamamözü, Gözlek and Resadiye. The thermal waters of NAFZ are dominant...
Remote sensing study of sürgü fault zone(Malatya, Turkey)
Koç, Ayten; Kaymakcı, Nuretdin; Department of Geodetic and Geographical Information Technologies (2005)
The geometry, deformation mechanism and kinematics of the Sürgü Fault Zone is investigated by using remotely sensed data including Landsat TM and ASTER imagery combined with SRTM, and stereo-aerial photographs. They are used to extract information related to regional lineaments and tectono-morphological characteristics of the SFZ. Various image processing and enhancement techniques including contrast enhancement, PCA, DS and color composites are applied on the imagery and three different approaches includin...
Geochemical signatures of granitoids associated with skarns in central Anatolia
Kuscu, I; Gencalioglu-Kuscu, G; Erler, A (Informa UK Limited, 2001-08-01)
Many studies have shown systematic correlations between the composition of plutons worldwide and the metal contents of associated skarns. This is the first report of similar correlations between plutons and the skarns of the Akdagmadeni, Akcakisla, and Keskin districts in Central Anatolia. Herein, die genetic associations of skarn occurrences are investigated using the geochemical compositions of the intrusives.
Sedimentological, cyclostratigraphical and sequence stratigraphical analysis of cretaceous Üzümlü formation (NW Turkey)
Keskinler, Salih Yiğit; Yılmaz, İsmail Ömer; Department of Geological Engineering (2007)
High resolution sampling was performed along the Üzümlü Formation exposed near the Yeniceşıhlar village of Mudurnu (Bolu). Field and thin-section analyses showed that the Üzümlü Formation is composed of cm to m scale cycles of 4th and 5th order. The 4th order cycles are equivalencies of parasequences and have 0.4 Ma average duration. 5th order cycles are interpreted as episodic. Upper Albian (OAE1c or OAE1d) and Cenomanian/Turonian (OAE2) anoxic events are observed as black shale levels in the studied secti...
Citation Formats
G. Sarp, “Lineament analysis from satellite images, north-west of Ankara,” M.S. - Master of Science, Middle East Technical University, 2005.