Boron Contamination in the West of Lake Urmia, NW Iran, Caused by Hydrothermal Activities

详细信息    查看全文

• 作者：Manijeh Assadpour^a ; Soraya Heuss-Aß ; bichler^b ; ; Mahdi Jafari Bari^c ; ^heuss@lmu.de
• 关键词：Boron contamination ; hydrothermal activity ; metamorphic terrain ; magmatic fluids ; hot spring
• 刊名：Procedia Earth and Planetary Science
• 出版年：2017
• 出版时间：2017
• 年：2017
• 卷：17
• 期：Complete
• 页码：554-557
• 全文大小：745 K
• 卷排序：17

文摘

The environment of hot springs located in the western part of Lake Urmia and north of Urmia City, NW Iran, is contaminated with boron. Water analysis performed over a period of four years show maximum boron concentrations of 451 mg/l. An area of 250 km2 is heavily polluted. The tectonically strongly disturbed metamorphic and sedimentary rocks in this region provide good pathways for the circulation of fluids. The hydrothermal system consists mainly of Na-(SO4)-HCO3. The occurrence of boron can be attributed to the interaction of magmatic fluids, related to young volcanic activities in this area. They seem to be the result of an intensive fluid-rock interaction with the metamorphic host-rock, e.g. tourmaline rich gneiss. Hot fluids in the depth of the study area migrate through the fractured rocks and may leach boron during their path to the surface.