Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

The Role of Trans- Tensional Structures on Emplacement of Auriferous Epithermal Silica Zones in Southwest Sabalan, Northwest Iran

Document Type : Original Research Paper

Authors
Kh Baharfirouzi 1
A Khakzad 2
H Nazari 3
M.H Emami 4
1 Ph.D., Geological Survey of Iran; Department of Geology, Science and research Branch, Islamic Azad University, Tehran, Iran
2 Associate Professor, Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran
3 Assistant Professor, Institute for Earth Sciences, Geological Survey of Iran, Tehran, Iran
4 Associate Professor, Islamshahr Branch, Islamic Azad University, Islamshahr; Research Institute for Earth Sciences, Geological Survey of Iran, Tehran, Iran
10.22071/gsj.2015.41700
Abstract
The Azerbaijan plateau is distinguished by varied geomorphology and mineralization, both of which controlled by the dominant structural regime in the area, that is associated with the collision of the Arabian and Eurasian plates. Strike slip faults are the main structural features controlling the development of various compressive or extensional zones in Azerbaijan. The dominant faults are striking NW-SE and NE-SW and display right lateral and left lateral displacements, respectively. The vergence of vectors on two sides of faults in the fault conjunctions, control the dominant stress regime, geomorphology, emplacement of dikes, as well as the gold-bearing silica veins. The bent parts and steps between different tips of faults are other controllers of dominated tectonic regime and emplacement of granitic stocks and gold bearing silica veins. Because of change on the strike of Ahar-Sarab fault, an extensional regime prevailed in southwest of Sabalan and silica veins injected in this area, some of these veins are auriferous.
Keywords
Tectonic and mineralization
Auriferous silica zones
Trans- tension structures
Strike- slip faults
Scientific Quarterly Journal of Geosciences
Volume 24, Issue 96 - Serial Number 96
No. 96, Summer 2015
Summer 2015
Pages 129-140