Open Access Research Paper Views (712) Petrology and geochemistry of volcanic rocks in south Langrood Sedigheh Ehsani, Mohammad Ali Arian, Mohammad Hossein Razavi J. Biodiv. & Environ. Sci. 5(6), 345-352, December 2014. Keywords: Calc-alkaline, Geochemistry, Petrology, Rift, Shoshonite, South Langrood, Tholeiitic Details