The aim of this study is to extract information about mineral distribution and
percentages of Oymaagaç / granitoid (Beypazari-Ankara) by using remote sensing
techniques. Two methods are applied during the studies which are spectral analysis
and Crosta techniques.
Spectral measurements are done for fresh and weathered samples collected at 32
locations. Mineral percentages are calculated using spectral mixture analysis for each
sample by considering main, accessory and secondary mineral content of
granodiorite. A total of 10 endmembers for fresh samples and 15 for weathered
samples are used. USGS spectral library data is utilized through the analyses.
For Crosta technique (image analysis) the multispectral ASTER satellite image is
used. Five alteration minerals are discriminated and their maps are generated during
this analysis.
Interpretation and comparison of the results of both methods and testing these results
with the existing petrographical and geochemical data indicate that: 1) according to
the results of both spectral analyses and Crosta technique a zonation is not observed
in the granitoid, 2) comparison of the results for alteration minerals of these two
analyses are partly compatible but not exactly similar, 3) Results of spectral analysis
do not fit geochemical nor modal analyses because of inconsistency of the data sets.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12606027/index.pdf |
| Date | 01 May 2005 |
| Creators | Pekesin, Burcu Fatma |
| Contributors | Toprak, Vedat |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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