Petrogenesis of Raviz-Shan Abad intrusions from west of Rafsanj an (Kerman province): Evidences for post Eocene magmatism

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Salehinejad Ranjbar H.; AHMADIPOUR H.; MOEINZADEH H.; MORADIAN A.

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Journal: GEOSCIENCES Year:2020 | Volume:29 | Issue:115 Page(s): 219-228

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Title

Petrogenesis of Raviz-Shan Abad intrusions from west of Rafsanj an (Kerman province): Evidences for post Eocene magmatism

Author(s)

Salehinejad Ranjbar H. | AHMADIPOUR H. | MOEINZADEH H. | MORADIAN A. | Issue Writer Certificate

Keywords

gabbroQ2

Raviz-Shan abadQ1

RafsanjanQ2

Dehaj-Sarduyieh beltQ1

Post Eocene magmatismQ1

Abstract

Raviz-Shan abad intrusions from the West of Rafsanjan (Kerman province), represent a part of Dehaj-Sarduyieh belt and intruded into the Eocene volcano-sedimentary rocks as dykes and apophyses. Thicknesses of the dikes and the diameters of the patches reach up to 4 and 10 meters respectively. In the field, they appear as dark intrusions contain sporadic euhedral pyroxene crystals with up to 5 mm in size. They are gabbro and diorite and their main minerals are plagioclase and pyroxenes set in a fine-grained matrix and show intergranular and porphyroid textures. These rocks have low-K calc-alkaline affinities and their geochemical characteristics tend to the subduction zone settings. In these rocks, 87Sr/86Sr and 143Nd/144Nd ratios vary between 0. 70403 to 0. 70409 and 0. 5128 to 0. 5129 respectively and eNd(i) values change between 3. 52 to 6. 6. These evidences along with the special textures show that their parent magmas affected by fractionation, assimilation and magma mixing processes. Considering that these rocks have intruded into the Eocene volcanics, we suggest that they represent the last stages of Eocene magmatism in the Cenozoic Kerman magmatic belt and intruded into the crust after the intiation of N eo-Tethys subduction beneath to Central Iranian block, probably in a continental margin tectonic setting.

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APA: Copy

Salehinejad Ranjbar, H., AHMADIPOUR, H., MOEINZADEH, H., & MORADIAN, A.. (2020). Petrogenesis of Raviz-Shan Abad intrusions from west of Rafsanj an (Kerman province): Evidences for post Eocene magmatism. GEOSCIENCES, 29(115 ), 219-228. SID. https://sid.ir/paper/375619/en

Vancouver: Copy

Salehinejad Ranjbar H., AHMADIPOUR H., MOEINZADEH H., MORADIAN A.. Petrogenesis of Raviz-Shan Abad intrusions from west of Rafsanj an (Kerman province): Evidences for post Eocene magmatism. GEOSCIENCES[Internet]. 2020;29(115 ):219-228. Available from: https://sid.ir/paper/375619/en

IEEE: Copy

H. Salehinejad Ranjbar, H. AHMADIPOUR, H. MOEINZADEH, and A. MORADIAN, “Petrogenesis of Raviz-Shan Abad intrusions from west of Rafsanj an (Kerman province): Evidences for post Eocene magmatism,” GEOSCIENCES, vol. 29, no. 115 , pp. 219–228, 2020, [Online]. Available: https://sid.ir/paper/375619/en

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