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Article: Urmia
- Article from:
- The Columbia Encyclopedia, Sixth Edition
CopyrightThe Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press. (Hide copyright information)
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Urmia , formerly Rezaiyeh, city (1991 pop. 357,399), capital of West Azerbaijan prov., NW Iran, near Lake Urmia. It is the trade center for a fertile agricultural region where fruit and tobacco are grown. An important town by the 9th cent., Urmia was seized by the Oghuz Turks (11th ...
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Article: The Eocene bimodal Piranshahr massif of the Sanandaj-Sirjan Zone, ...
Journal of the Geological Society;
January 1, 2009 ;
700+ words
...Abstract: The bimodal Piranshahr massif is composed of coeval but geochemically unrelated mafic (40.7 0.2 Ma zircon U-Pb sensitive high-resolution ion microprobe (SHRIMP) age) and A-type felsic rocks (4 1 0.5 Ma Rb-Sr and 41.3 0.8 Ma zircon U-Pb SHRIMP age). The mafic rocks consist of two
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