Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

The Study of Rose Diagrams by Statistical Joint systems of Intrusive Rocks in Shahrestan Area, Piranshahr (West Azarbaijan)

Document Type : Original Research Paper

Authors
samad alipour 1
R. Nikrouz 2
1 Department of Geology, Faculty of Science, Urumia University, Urumia, Iran.
2 Department of Geology, Faculty of Science, Urmia University, Urmia, Iran
10.22071/gsj.2010.55645
Abstract
Shahrestan mining district is the largest extensive granitic stone province in Iran. There are 25 active mines in this area. The study of rose diagrams with statistical joint systems at this ornamental stone mining district carried out in order to reduce expenses with low waste disposal of mining extraction. The most types of intrusive rocks are syenite, monzonite, gabbro and granite cropped out in the region. Alkali syenite is the main rock type in spite of varying color and texture. Diversity of apparent color and rock composition associated with variety of color in low distances, existence of joints, faults and thrusts around formations and rocks of moderately being metamorphosed, are the source of major problems in the region from the exploration till the excavation stages. The study results indicate that the main folding trend is extended in a northwest-southeast direction. Therefore the direction of quarries in central part must be developed in a north-south direction and in the northwest part in northwest–southeast direction while in the east of Shahrestan quarries must be created in a northeast – southwest trend. 
Keywords
Piranshahr
Rose diagram
Syenite
Ornamental stone
 
 
 
 
 
 
References
Eftekharnezhad, J., 1975- Brief history and structural development of Azarbaijan. Geol. Survey of Iran. International Report. 8 pp.
Gorden,G., 2003- Morphometric analysis and tectonic interpretation of digital terrain data, A case study, Earth Surface  Processes and Landforms, 28, 807-822
Stocklin, J., 1968- Structural history and tectonics of Iran: A review, Am. Ass.petrol. Geol.Bull.52,1229-1258
Scientific Quarterly Journal of Geosciences
Volume 19, Issue 76
Winter 2010
Pages 51-56