Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Physical Sciences and Mathematics
Geodynamic Evolution Of The Sanandaj-Sirjan Zone, Zagros Orogen, Iran, Javad Mehdipour Ghazi, Mohssen Moazzen
Geodynamic Evolution Of The Sanandaj-Sirjan Zone, Zagros Orogen, Iran, Javad Mehdipour Ghazi, Mohssen Moazzen
Turkish Journal of Earth Sciences
No abstract provided.
Nature And Physicochemical Conditions Of Crystallization In The South Dehgolan Intrusion, Nw Iran: Mineral-Chemical Evidence, Fatemeh Sarjoughian, Ali Kananian, David Richard Lentz, Jamshid Ahmadian
Nature And Physicochemical Conditions Of Crystallization In The South Dehgolan Intrusion, Nw Iran: Mineral-Chemical Evidence, Fatemeh Sarjoughian, Ali Kananian, David Richard Lentz, Jamshid Ahmadian
Turkish Journal of Earth Sciences
The South Dehgolan intrusion in the Sanandaj-Sirjan Zone ranges in composition from calc-alkalic monzogabbro to syenite to alkalic granite. This suite is composed mainly of variable proportions of quartz, K-feldspar, plagioclase, biotite, hornblende, and pyroxene. The plagioclase composition varies between albite to labradorite. The biotites are Mg- to Fe-rich in the monzogabbro to granite, respectively. The amphiboles are calcic and the composition varies from magnesiohornblende to actinolite. Clinopyroxene compositions fall in the diopside-augite field. The average calculated near-solidus crystallization temperatures are 774 °C, 655 °C, and 775 °C for the monzogabbro-monzodiorite, syenite, and granite, respectively. Calculated average pressures of emplacement …