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Petrology, Geochemistry and Tectonomagmatic Evolution of Hezar Igneous Complex (Rayen- South of Kerman- Iran): the First Description of an Arc Remnant of the Neotethyan Subduction Zone | ||
| Journal of Sciences, Islamic Republic of Iran | ||
| مقاله 5، دوره 29، شماره 4، دی 2018، صفحه 341-359 اصل مقاله (851.24 K) | ||
| نوع مقاله: Final File | ||
| شناسه دیجیتال (DOI): 10.22059/jsciences.2018.67446 | ||
| نویسندگان | ||
| M. Noorizadeh* 1؛ A. Moradian1؛ H. Ahmadipour1؛ M. R. Ghassemi2؛ J. F. Santos3 | ||
| 1Department of Geology, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Islamic Republic of Iran | ||
| 2Research Institute for Earth Sciences, Geological Survey of Iran, Meraj Ave., Azadi Sq., Tehran, Islamic Republic of Iran | ||
| 3Department of Geosciences, Geobiotec Research Unit, University of Aveiro, 3810-193 Aveiro, Portugal | ||
| چکیده | ||
| The Hezar Igneous Complex (HIC) in the south-eastern part of Urumieh-Dokhtar magmatic arc, is the most prominent magmatic feature in the Kerman Porphyry Copper Belt, that understanding magmatic evolution of which may shed light on the tectonomagmatic development of this less-studied part of an important magmatic arc in the Neotethys realm. The HIC has been developed in the the intersection of the NS-striking Sabzevaran fault and the NW-SE striking Rafsanjan-Rayen fault. It is indicated that the possible place of the conduit and vent is in Jalas Mountain which has been splitted later by the Sabzevaran fault into Minor and Major Jalas. The current summit had been constructed by ascending magma chamber under the HIC that constitutes the Kamali Mountain at the south of the summit. Some plutonic rocks of the HIC are exposed at Kamali Mountain. The subalkaline rocks of this complex mainly are composed of different pyroclastic and lava flow rocks, acidic to basic in composition, showing the evidences of fractional crystallization and mineral segregation. Sequential explosive and effusive eruptions with Strombolian to Vulcanian types are evident in the successive volcanic layers. The compositional trend shows the melting of spinel lherzolite, not garnet lherzolite. The subduction-related mechanism of the magma genesis has been indicated by IAB nature of the magma formation in geochemical diagrams. | ||
| کلیدواژهها | ||
| Hezar Igneous Complex (HIC)؛ Rayen؛ Urumieh-Dokhtar magmatic arc؛ Tectonomagmatic evolution؛ Whole-rock geochemistry | ||
| مراجع | ||
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