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Petrology of Eocene Volcanic Rocks in NE of Ordib (NE of Isfahan Province)

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Petrology of Eocene Volcanic Rocks in NE of Ordib (NE of Isfahan Province) Archive of SID Vol. 17, No. 4, Winter 1388/2010 Petrology of Eocene volcanic rocks in NE of Ordib (NE of Isfahan Province) Gh. Torabi*, N. Shirdashtzadeh Department of Geology, Faculty of Scinces University of Isfahan (Received: 20/2/2009, in revised form: 9/6/2009) Abstract: Eocene volcanic rocks in NE of Ordib, have a very good exposures near and along the Turkmeni-Ordib fault. These rocks, that are situated in the inner part of the Central Iran and margin of the Yazd block, comprise trachyte, trachy-andesite and basaltic trachy-andesite. Trachy-andesite is the pervasive rock unit. Rock forming minerals of these rocks are chloritized olivine, plagioclase, pyroxene, mica, amphibole, K-feldspar, quartz, ilmenite, magnetite and calcite. The most important mineralogical characteristics of the studied trachy-andesites are wide range of minerals in one rock sample, including two types of clinopyroxene, mica, plagioclase, sanidine, formation of reactionic clinopyroxene and calcite around the quartz, and oscillatory zoning of feldspars and amphiboles. Chemistry of clinopyroxenes and biotites with whole rock geochemical analyses, reveal that these rocks are similar to the continental volcanic arc rocks. Petrography and mineral chemistry demonstrate the magma mixing occurrence in formation of these rocks. Keywords: Petrology, Eocene volcanic rocks, magma mixing, Ordib. ﻟﻄﻔﺎ ﺍﻟﻄﻔﺎ ﺍﻳﻤﻴﻞ ﺷﻤﺎﺭﻩﻳﻤﻴﻞ ﻭ ﺷﻤﺎﺭﻩﻫﺎﻱ ﺗﻤﺎﺱﻧﻮﻳﺴﻨﺪﻩﻣﺴﺌﻮﻝﺭﺍﺩﺭﺻﻔﺤﻪﭼﮑﻴﺪﻩﻓﺎﺭﺳﻲﻭﺍﻧﮕﻠﻴﺴﻲ ﮐﻨﺘﺮﻝﮐﻨﺘﺮﻝﮐﻨﺘﺮﻝﻓﺮﻣﺎﺋﻴﺪﻓﺮﻣﺎﺋﻴﺪﻓﺮﻣﺎﺋﻴﺪ... *Corresponding author, Tel.: +98 (0311) 7932165, Fax:+98 (0311) 7932152, E-mail: [email protected] www.SID.ir Archive of SID ﺳﺎﻝ ﻫﻔﺪﻫﻢ،ﺷﻤﺎﺭﺓ ٤ ، ﺯﻣﺴﺘﺎﻥ ٨٨،ﺍﺯﺻﻔﺤﺔ ۵۱۹ ﺗﺎ ٥٣٤ ﺳﻨﮓ ﺷﻨﺎﺧﺘﻲ ﺳﻨﮓﻫﺎﻱﺁﺗﺸﻔﺸﺎﻧﻲ ﺍﺋﻮﺳﻦ ﺷﻤﺎﻝ ﻏﺮﺏ ﺍﻭﺭﺩﻳﺐﻏﺮﺏﺍﻭﺭﺩﻳﺐ (((ﺷﻤﺎﻝﺷﺮﻕ ﺍﺳﺘﺎﻥ ﺍﺻﻔﻬﺎﻥ) ))) ﻗﺪﺭﺕﺗﺮﺍﺑﻲﻗﺪﺭﺕﺗﺮﺍﺑﻲﻗﺪﺭﺕﺗﺮﺍﺑﻲ*، ﻧﺮﮔﺲ ﺷﻴﺮﺩﺷﺖ ﺯﺍﺩﻩ ﺩﺍﻧﺸﮕﺎﻩﺍﺻﻔﻬﺎﻥ،ﺩﺍﻧﺸﮑﺪﻩﻋﻠﻮﻡ،ﺑﺨﺶ ﺯﻣﻴﻦﺷﻨﺎﺳﻲ . (ﺩﺭﻳﺎﻓﺖﻣﻘﺎﻟﻪ: /١ ١١/۸۷ ،ﻧﺴﺨﻪﻧﻬﺎﻳﻲ:٢٠ /٣/ ٨٨ ) ﭼﮑﻴﺪﻩﭼﮑﻴﺪﻩﭼﮑﻴﺪﻩ: ::: ﺩﺭ ﺷﻤﺎﻝ ﻏﺮﺏ ﺭﻭﺳﺘﺎﻱﺍﻭﺭﺩﻳﺐ ﺸ ﺎ ﻧ ﺳﻨﮓﻲ ﺍ ﺋ ﻮ ﺳ ﻫﺎﻱﺁﺗﺸﻔﻦ ﺩ ﺭ ﺭ ﺍ ﺳ ﺘ ﺎ ﻭ ﻧ ﺰ ﺩ ﻳ ﮏ ﺑ ﻪ ﮔ ـ ﺴ ﻞ ﺗ ﺮ ﮐ ﻤ ﻨ ـ ﻲ - ﺍﻭﺭﺩﻳـﺐ ﺩﺍﺭﺍﻱ ﺑﺮﻭﻧﺰﺩﻫـﺎﻱ ﺑﺴﻴﺎﺭﺧﻮﺑﻲ ﻫﺴﺘﻨﺪ. ﻫ ﺎ ﺍﻳﻦﺳﻨﮓ ﮐ ﻪ ﺩ ﺭ ﺑ ﺨ ﺶﻫﺎﻱ ﺩﺭﻭﻧﻲ ﺍﻳﺮﺍﻥﻣﺮﮐﺰﻱ ﻭ ﺣﺎﺷﻴﻪ ﺍ ﺭ ﺩ ﺍ ﺑﻠﻮﮎﺭ ﻧ ـ ﺪ ﻳﺰﺩ، ﺑ ﻴ ﻗـﺮـ ﺸ ﺘ ﺮ ﺷ ـ ﺎﻣ ﻞ ﺗ ﺮ ﺍ ﮐ ـ ﻲ ﺁ ﻧ ـ ﺪ ﺯ ﻳ ﺖ ﺑﺎﺯﺍﻟﺘﻲ، ﺗﺮﺍﮐﻲﺁﻧﺪﺯﻳﺖ ﻭ ﺗﺮﺍﮐﻴﺖ ﻫﺴﺘﻨﺪ.ﺗﺮﺍﮐﻲ ﺁﻧﺪﺯﻳﺖﻫﺎﺑﻴﺸﺘﺮﻳﻦﻓﺮﺍﻭﺍﻧﻲﺭﺍﺩﺍﺭﻧﺪ ﺑ .ﻴ ـ ﺸ ﺘ ﺮ ﮐ ـ ﺎ ﻧ ﻲﻫـﺎﻱﺗـﺸﮑﻴﻞ ﺩﻫﻨـﺪﺓ ﺍﻳـﻦ ﻫ ﺳـﻨﮓ ـ ﺎ ﺍﻟﻴﻮﻳﻦﻫﺎﻱ ﮐﻠﺮﻳﺘﻲ، ﭘﻼﮊﻳﻮﮐﻼﺯ،ﭘﻴﺮﻭﮐﺴﻦ،ﻣﻴﮑﺎ، ﺁﻣﻔﻴﺒﻮﻝ،ﻓﻠﺪﺳﭙﺎﺭﭘﺘﺎﺳﻴﻢ، ﺗ ﺰ ﮐـﻮﺍﺭ، ﺍ ﻳ ﻠ ﻤ ﻨ ﻴ ـ ﺖ ، ﻣ ﮕ ﻨ ﺘ ﻴ ـ ﺖ ﻭ ﮐ ﻠ ـ ﺴ ﻴ ﺖ ﺍ ﺳ ـ ﺖ.ﺍﺯﻣﻬﻤﺘـﺮﻳﻦ ﻭﻳﮋﮔﻲﻫﺎﻱ ﮐﺎﻧﻲ ﺷﻨﺎﺳﻲ ﺗﺮﺍﮐﻲ ﺁﻧﺪﺯﻳﺖ ﻫﺎﻱﻣﻮﺭﺩ ﺑﺮﺭﺳ ﻲ ﺗ ﻣ ﻮ ﺍ ﻲﻥ ﺑ ﻪ ﻭ ﺟ ﻮ ﺩ ﻃ ﻴ ﻒ ﮔ ﺴ ﺘ ﺮ ﻫ ﺍﺩ ـ ﻩﺎﻱ ﺩ ﺍ ﺭﺯ ﻳ ﮐ ـ ـ ﺎ ﻧ ﮏﻲ ﺳ ـ ﻨ ﮓ ، ﻭ ﺟ ـ ﻮ ﺩ ﺩ ﻭ ﻧ ـ ﻮ ﻉ ﮐﻠﻴﻨﻮﭘﻴﺮﻭﮐﺴﻦ،ﺩﻭﻧﻮﻉﻣﻴﮑﺎ،ﺩﻭﻧﻮﻉ ﻮ ﻉﭘﻼﮊﻳﻮﮐﻼﺯ،ﺩﻭﻧ ﺳ ﺎ ﻧ ﻴ ﺪ ﻳ ﻦ ، ﺗ ﺸ ﮑ ﻴ ﻞ ﮐ ﻠ ﺴ ﻴ ﺖ ﻭ ﮐ ﻠ ﻴ ﻨ ﻮ ﭘ ﻴﻫ ﺎ ﺮ ﻭ ﻱﮐ ﺴ ﻭ ﺍ ﮐ ﻦﻨ ـ ﺸ ﻲ ﭘ ﻴ ﺮ ﺍﻣ ـ ﻮ ﻥ ﮐ ﻮ ﺍ ﺭ ﺗ ﺰ ﻫ ـ ﺎ ، ﻭ ﻣﻨﻄﻘﻪ ﺑﻨﺪﻱ ﻧﻮﺳﺎﻧﻲﺩﺭﻓﻠﺪﺳﭙﺎﺭﻫﺎﻭﺁﻣﻔﻴﺒﻮﻝ ﻫﺎ ﺍﺷﺎﺭﻩ ﮐﺮﺩ.ﺑﺮﺭﺳﻲ ﺷﻴﻤﻲ ﮐﻠﻴﻨﻮﭘﻴﺮﻭﮐﺴﻦﻫﺎﻭﺑﻴﻮﺗﻴﺖﻫﺎﻫﻤﺮﺍﻩﺑﺎﺁﻧﺎﻟﻴﺰﺳﻨﮓﮐﻞ،ﻧـﺸﺎﻥ ﺍﺯﺷﺒﺎﻫﺖ ﻫ ﺍﻳﻦﺳﻨﮓﺎ ﺑ ﻪ ﺳ ﻨ ﮓﻫﺎﻱ ﻗﻮﺱﻫﺎﻱ ﺍ ﺁﺗﺸﻔﺸﺎﻧﻲ ﻱ ﺩﻗﺎﺭﻩ ﺍ ﺷ ﺘ ﻪ ﻭ ﺷ ﻮ ﺍ ﻫ ﺪ ﺳ ـ ﻨ ﮓ ﺷ ـ ﻨ ﺎ ﺧ ﺘ ﻲ ﻭﺷ ﻨ ﺎ ﮐ ﺳ ـ ـﺎ ﻧ ﻲﻲ ﻧ ﻴ ـ ﺰ ﺑ ﻴ ـ ﺎ ﻧ ﮕ ﺮ ﺭ ﺧ ـ ﺪ ﺍ ﺩ ﺍﺧﺘﻼﻁﺩﻭﻣﺎﮔﻤﺎﻫﻨﮕﺎﻡﺗﺸﮑﻴﻞﺁﻥﻫﺎﺳﺖ . ﻭﺍﮊﻩﻭﺍﮊﻩﻭﺍﮊﻩﻫﺎﻱﮐﻠﻴﺪﻱﻫﺎﻱﮐﻠﻴﺪﻱﻫﺎﻱﮐﻠﻴﺪﻱ:::ﺳﻨﮓﺷﻨﺎﺳﻲ، ﺁﺗﺸﻔﺸﺎﻧﻲﻫﺎﻱﺍﺋﻮﺳﻦ،ﺁﻣﻴﺨﺘﻦﻣﺎﮔﻤﺎﻳﻲ، ﺍﻭﺭﺩﻳﺐ . ﻣﻘﺪﻣﻪﻣﻘﺪﻣﻪﻣﻘﺪﻣﻪ ﺑﺮﺭﺳﻲﻫﺎﻱ ﺳﻨﮓﺷﻨﺎﺳﻲ ﻗﺮﺍﺭ ﮔﺮﻓﺘﻪ .ﺍﻧﺪ ﻭﻟﻲ ﻫ ﺳﻨﮓﺎ ﻱ ﻣ ﻮ ﺟ ـ ﻮ ﺩ ﺑ ﻲ ﺷ ﮏ ﮔ ﺴ ﺘ ﺮ ﺩ ﻩﺗﺮﻳﻦ ﻓﻌﺎﻟﻴﺖﻫﺎﻱ ﺁﺗﺸﻔﺸﺎﻧﻲ ﺳﺮﺯﻣﻴﻦ ﺍﻳـﺮﺍﻥ ﺩﺭ ﺩﺭ ﺑﺨﺶﻫﺎﻱﻣﻴﺎﻧﻲﻭﺷﺮﻗﻲﺍﻳﺮﺍﻥﻣﺮﮐﺰﻱﮐﻤﺘﺮﺑﺮﺭﺳﻲﺷﺪﻩ . ﺍﻧﺪ ﺋ ﻮ ﺯﻣﺎﻥﺳ ﺍﻦ ﺭ ﺥ ﺩ ﺍ ﺩ ﻩ ﻭ ﺁ ﺛ ـ ﺎ ﺭ ﺍ ﻳ ـ ﻦ ﺗ ﮑ ﺎ ﭘ ﻮ ﻫ ـ ﺎ ﺭ ﺍ ﻣ ـ ﻲﺗـﻮﺍﻥ ﺩﺭﺗﻤـﺎﻡ ﻋ ﺒ ــ ﻮ ﺭ ﻣ ﺎ ﮔ ﻤ ﺎ ﻫ ــﺎﻱﺑــﺎﺯﺍﻟﺘﻲﺑﺮﮔﺮﻓﺘــﻪﺍﺯﮔﻮﺷــﺘﻪ،ﺍﺯﺩﺭﻭﻥﭘﻮﺳــﺘﺔ ﻫ ﺎ ﻱ ﺍ ﻳ ﺮ ﺍ ﻥ ﺑﺨﺶﺟ ﺰ ﺯ ﺍ ﮔ ﺮ ﺱ ﻭ ﮐ ﭙ ﻪ ﺩ ﺍ ﻍ ﻣ ﺸ ﺎ ﻫ ﺪ ﻩ ﮐ ﺮ ﺩ ﺷ (ـ ﮑ ﻞ ۱). ﺿﺨﻴﻢﻗﺎﺭﻩ ﺍﻱ، ﺫﻭﺏ ﻫ ﺳﻨﮓﺎ ﻱ ﭘ ﻮ ﺳ ﺘ ﺔ ﻗ ﺎ ﺭ ﻩﺍﻱﻭﺭﺧﺪﺍﺩﺁﻧﺎﺗﮑﺴﻲ، ﻧ ﺳﻨﮓﻲ ﺍ ﺋ ﻫﺎﻱﻮ ﺳ ـ ﻦ ﺩ ﺁﺗﺸﻔﺸﺎﺍ ﺭ ﺍ ﻱ ﻃ ﻴ ـ ﻒ ﮔ ـ ﺴ ﺘ ﺮ ﺩ ﺓ ﺗ ﺮ ﮐ ﻴ ﺒ ـ ﻲ ﺍ ﺯ ﺎ ﻱ ﺍ ﺳ ﻴ ﺪ ﻱ ،ﺗﺸﮑﻴﻞﻣﺎﮔﻤﺎﻫ ﻭ ﺁ ﻻ ﻳ ﺶ ﻭ ﺁﻣ ﻴ ـ ﺰ ﺵ ﻣ ﺎ ﮔ ﻤ ـ ﺎ ﻳ ﻲ ﺣ ـ ﻴ ﻦ ﺗ ﺤ ﺖ ﺍ ﺷ ﺒ ﺎ ﻉ ﺗ ﺎ ﺍ ﺑ ﺷ ﺮﺒ ﺎ ﺍﻉ ﺑ ﻮ ﺩ ﻩ ﻭ ﺑ ﻴ ﺸ ﺘ ﺮ ﺑ ـ ﻪ ﺳ ـ ﺮ ﻫ ـ ﻱﺎ ﻱ ﻣ ﺎ ﮔ ﻤ ـ ﺎ ﻳ ﻲ ﺻ ﻌ ﻮ ﺩ ﻣ ﺎ ﮔ ﻤ ﺎ ﻫ ﺎ ﻧ ﻴ ﺰ ﺩ ﺭ ﺳ ﻨ ﮓﻫﺎﻱ ﺁﺗﺸﻔﺸﺎﻧﻲ ﻫ ﺑﺨﺶﺎ ﻱ ﻣ ﺨ ﺘ ﻠ ﻔ ـ ﻲ ﺁﻫﮑﻲ- ﻗﻠﻴﺎﻳﻲ ﺗﺎ ﺷﻮﺷﻮﻧﻴﺘﻲ ﻭﺍﺑﺴﺘﻪ .ﺍﻧﺪ ﺩﺭﺍﻳﻦﻣﻴﺎﻥﺑـﻪﺳـﻨﮓ - . ﺍﺯﺳﺮﺯﻣﻴﻦﺍﻳﺮﺍﻥﻣﻮﺭﺩﮐﻨﮑﺎﺵﻗﺮﺍﺭﮔﺮﻓﺘﻪﺍﺳﺖ ﻫ ﺎ ﻱ ﻣ ﻮ ﺟ ﻮ ﺩ ﺩ ﺭ ﺯ ﻭ ﻥ ﺍ ﺭ ﻭﻣ ﺩ ﻴ ﺧ ﻪﺘ ﺮ ﻭ– ﺍ ﻟ ﺒ ﺮ ﺯ ﺗ ﻮ ﺟ ﻪ ﺑ ﻴ ﺸ ﺘ ﺮ ﻱ ﺷ ﺪ ﻩ ﺩﺭ ﺑﺨــﺶﻫــﺎﻱ ﺷــﻤﺎﻝ ﺷــﺮﻗﻲ ﺭﻭﺳــﺘﺎﻱ ﺍﻭﺭﺩﻳــﺐ ﻭ ﺷــﻤﺎﻝ ﻭ ﺟﻨﺒﻪ ﻫ ـ ﺎ ﺗ ﻮ ﺳ ـ ﻂ ﻫﺎﻱﻣﺨﺘﻠـﻒﺁﻥ ﺍ ﻓ ـ ﺮ ﺍ ﺩ ﺑ ـ ﺴ ﻴ ﺎ ﺭ ﺯ ﻳ ـ ﺎ ﺩ ﻱ ﻣ ـ ﻮ ﺭ ﺩ ﻣﻬﺮﺟﺎﻥ (ﺷﻤﺎﻝﺷﺮﻕ ﺍﺳﺘﺎﻥ ﺍﺻﻔﻬﺎﻥ)ﻭﺩﺭﺭﺍﺳﺘﺎﻭﺣﺎﺷﻴﺔﮔﺴﻞ * ﻧﻮﻳﺴﻨﺪﻩﻣﺴﺌﻮﻝ،ﺗﻠﻔﻦ:٧٩٣٢١٦٥(۰۳۱۱) +٨ ٩ ،ﻧﻤﺎﺑﺮ : ٧٩٣٢١٥٢(٠٣١١) +٨ ٩ ، ﭘﺴﺖﺍﻟﮑﺘﺮﻭﻧﻴﮑﻲ[email protected] www.SID.ir Archive of SID ﺟﻠﺪ۱۷، ﺷﻤﺎﺭﻩ۴،ﺯﻣﺴﺘﺎﻥ۱۳۸۸ ﺳﻨﮓ ﺷﻨﺎﺧﺘﻲ ﺳﻨﮓﻫﺎﻱ ﺁﺗﺸﻔﺸﺎﻧﻲ ﺍﺋﻮﺳﻦﺷﻤﺎﻝ ﻏﺮﺏ ﺍﻭﺭﺩﻳﺐ ... ٥٢١ ﺗﺮﮐﻤﻨﻲ – ﻫ ﺎ ﺍﻭﺭﺩﻳﺐ ﻱ ﺁ ﺗ ﺳﻨﮓﺸ ﻔ ﺸ ﺎ ﻧ ﻲ ﺍ ﺋ ﻮ ﺳ ﻦ ﺑ ﺎ ﺗ ﺮ ﮐ ﻴ ﺐ ﺑ ﺴ ﻴ ﺎ ﺭ ﻫ ﺎ ﻱ ﺑﺨﺶﺟ ﻨ ﻮ ﺑ ﻲ ﺩ ﺷ ﺖ ﻛ ﻮ ﻳ ﺮ ﻣ ﺸ ﻜ ﻞ ﺍﺳﺖ ﺍ .ﻳ ﻦ ﮔ ﺴ ﻞ ﺭ ﺍ ﻣ ﻲﺗﻮﺍﻥ ﺯ ﻳ ﮔﺴﺘﺮﺩﺓ ﺖ ﺑ ﺎ ﺯ ﺍ ﻟ ﺘ ﻲ ﺗﺮﺍﮐﻲﺁﻧﺪ، ﺗ ﺮ ﺍ ﮐ ﻲ ﺁ ﻧ ﺪ ﺯ ﻳ ﺖ ﻭ ﺗ ﺮ ﺍ ﮐ ﻴ ـ ﺖ ﺩ ﺍ ﺭ ﺍ ﻱ ﺑ ﻪ ﻋ ﻨ ﻮ ﺍ ﻥ ﻳ ﻚ ﮔ ﺴ ﻠ ﺔ ﮊ ﺭ ﻑ ﺩ ﺭ ﻧ ﻈ ﺮ ﮔ ﺩ ﺮ ﺭﻓ ﺑ ﺖﺨ .ﺶ ﺟ ﻨ ﻮ ﺏ ﻏ ﺮ ﺑ ـ ﻲ ﻫ ﺎ ﻱ ﺑ ﺭﺧﻨﻤﻮﻥﺴ ﻴ ﺎ ﺭ ﺧ ﻮ ﺑ ﻲ ﻫ ﺴ ﺘ ﻨ ﺪ (ﺷﮑﻞ ۲)[ ﺩ ۱ﺭ ].ﺍ ﻳ ـ ﻦ ﻣ ﻴ ـ ﺎ ﻥ ﺍ ﻳ ﻦ ﮔ ﺴ ﻞ ﺯ ﻭ ﻥ ﺑ ﺮ ﺷ ﻲ ﺗ ﺮ ﻛ ﻤ ﻨ ﻲ ﻣ ﺸ ﺎ ﻫ ﺪ ﻩ ﻣ ﻲ . ﺩﺷ ﺍ ﻳ ﻮـ ﻦ ﺯ ﻭ ﻥ ﺑ ﺮ ﺷ ﻲ ﺳﻨﮓﻫﺎﻱ ﺗﺮﺍﮐﻲﺁﻧﺪﺯﻳﺘﻲ ﺑﻴﺸﺘﺮﻳﻦ ﻓﺮﺍﻭﺍﻧﻲ ﺭﺍ ﺩﺍﺭﻧﺪ.ﺍﻳﻦﻣﻨﻄﻘـﻪ ﻫ ﺎ ﺩﺭﺩﮔﺮﮔﻮﻧﻪ ﻱ ﺍ ﻧ ـ ﺎ ﺭ ﻙ ﺑ ﻪ ( ﻭ ﻳ ﮋ ﻩ ﮔ ﺮ ﻭ ﻩ ﭼ ﺎ ﻩ ﮔ ﺮ ﺑ ﻪ ﺭﺧﺪﺍﺩﻩ) ﺍ ﺳ ﺖ ﻭ ﺩﺭ ﺗﻘﺴﻴﻤﺎﺕ ﻳ ﺯﻣﻴﻦﺮ ﺍ ﻥ ﺟ ﺰ ﻳ ﺷﻨﺎﺳﻲﺍﻲ ﺍ ﺯ ﺍ ﻳ ﺮ ﺍ ﻥ ﻣ ﺮ ﮐ ـ ﺰ ﻱ ﺑ ـ ﻮ ﺩ ﻩ ﻭ ﺑ ﻪ ﻟ ﺤ ﺎ ﻅ ﺷ ـ ﺪ ﺕ ﻭ ﭼﮕﻮﻧﮕﻲ ﺩﮔـﺮﻲ ، ﺑ ـ ﺴ ﺷﻜﻠــ ﻴ ـ ﺎ ﺭ ﺑ ـ ـ ﺎ ﺍ ﻫ ﻤ ﻴ ـ ﺖ ﺩﺭﺣﺎﺷﻴﺔ ﺷﺮﻗﻲ ﺑﻠﻮﮎ ﻳﺰﺩ ﻗﺮﺍﺭ ﺩﺍﺭﺩ ﺗ .ﻌ ﻴ ـ ﻴ ﻦ ﺳ ـ ﻦ ﺳ ـ ﻨ ﻫ ﮓـ ﺎ ﻱ ﺍﺳﺖ.ﺍﻳﻦ ﮔﺴﻞﻣﺮﺯﺟﻨﻮﺑﻲ ﻭ ﺷﺮﻗﻲﻣﺎﺳﻴﻮ ﺍﻧﺎﺭﻙ – ﺧﻮﺭﺍﺳﺖﻭ ﺑ ﺮ ﺭ ﺳ ﻲ ﺩ ﺭ ﻣﻮﺭﺩﺍ ﻳ ﻦ ﻣ ﻨ ﻄ ﻘ ﻪ ﺑ ـ ﺎ ﺍ ﺳ ـ ﺘ ﻔ ﺎ ﺩ ﻩ ﺍ ﺯ ﺭ ﻭ ﺵ ﺗ K-Arﻮ ﺳ ـ ﻂ ﺁ ﻥ ﺭ ﺍ ﺍ ﺯ ﺯ ﻭ ﻥ ﭼ ﺎ ﻩ ﭘ ﻠ ﻨ ﮓ – ﺑ ﻴ ﺎ ﺿ ﻪ ﺟ ﺪ ﺍ ﻣ ﻲ ﭘ ﻬ .ﻛﻨﺪﻨ ﺎ ﻱ ﺯ ﻭ ﻥ ﮔ ﺴ ﻠ ﻲ ﺷ ﻨ ﺎ ﺯﻣﻴﻦﺳ ﺎ ﻥ ﺭ ﻭ ﺳ ﻲ ﺳ ﻨ ﻲ ﻣ ﻌ ﺎ ﺩ ﻝﻣ ﻴ ﻠ ﻴ ﻮ ﻥ ۵۳ﺳ ﺎ ﻝ ﺭ ﺍ ﺑ ـ ﻪ ﺩ ﺳ ـ ﺖ ﺍﺯﭼﻨﺪ ﻘ ﺎ ﻁ ﺑ ﺻﺪﻣﺘﺮ، ﻪ ﺩﺭﺩ ﻭ ﻳ ـ ﺎﺑﺮﺧﻲ ﻧﭼ ﻨ ـ ﺪ ﻛ ﻴ ﻠ ـ ﻮﻣ ﺘ ﺮ ﺗ ﻐ ﻴ ﻴ ـ ﺮ ﺩ ﺍ ﺩ ﻩ ﺍ ﺳ ﺖ ﮐ ﻪ ﺑ ﻴ ﺎ ﻧ ﮕ ﺮ ﺗ ﻌ ﻠ ﻖ ﺍ ﻳ ﻫ ﺎﻦ ﺑ ﻪﺳ ﻨ ﺍ ﺋ ﻮ ﮓﺳ ـ ﻦ ﭘ ـ ﺎ ﻳ ﻴ ﻨ ﻲ ﺍ ﺳ ـ ﺖ ﻣﻲﻛﻨﺪ ٣ .[ ] ﭘﻬﻦ ﻫ ﺎ ﺗﺮﻳﻦﺑﺨﺶ ﻱ ﺯ ﻭ ﻥ ﮔ ﺴ ﻠ ﻲ ، ﺑ ﺨ ﻫ ﺎ ﺶﻱ ﺷ ـ ﻤ ﺎ ﻝ ۲[ ].ﺗﺼﺎﻭﻳﺮ ﺻﺤﺮﺍﻳﻲ ﻫ ﺎ ﻱ ﻣ ﺳﻨﮓﻮ ﺭ ﺩ ﺑ ﺮ ﺭ ﺳ ﻲ ﺩ ﺭ ﺷ ﮑ ﻞ ﻧ ـ ۳ﺸ ﺎ ﻥ ﺷ ﺮ ﻕ ( ﻣ ﻨ ﻄ ﻘ ﻪ ﻣ ﻮ ﺭ ﺩ ﺑ ﺮﺭﺳﻲﻭ) ﺟ ﻨ ﻮ ﺏ ﻏ ﺮ ﺑ ﻲ ﺍ ﺳ ﺖ.ﺩﺭ ﻫ ﺑﺨﺶـ ﺎ ﻱ ﺍﻧﺪﺩﺍﺩﻩﺷﺪﻩ .
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