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ghadami, gholamreza, Arzhangnegad, Farzaneh, Poosti, Mohammad, Fadaeian, Mohammad. (1402). Petrogenesis and Sr-Nd isotope geochemistry of Neogene igneous rocks in the Goloumak area, south of Kerman, Iran. , (), -. doi: 10.22059/jsciences.2023.361095.1007806
gholamreza ghadami; Farzaneh Arzhangnegad; Mohammad Poosti; Mohammad Fadaeian. "Petrogenesis and Sr-Nd isotope geochemistry of Neogene igneous rocks in the Goloumak area, south of Kerman, Iran". , , , 1402, -. doi: 10.22059/jsciences.2023.361095.1007806
ghadami, gholamreza, Arzhangnegad, Farzaneh, Poosti, Mohammad, Fadaeian, Mohammad. (1402). 'Petrogenesis and Sr-Nd isotope geochemistry of Neogene igneous rocks in the Goloumak area, south of Kerman, Iran', , (), pp. -. doi: 10.22059/jsciences.2023.361095.1007806
ghadami, gholamreza, Arzhangnegad, Farzaneh, Poosti, Mohammad, Fadaeian, Mohammad. Petrogenesis and Sr-Nd isotope geochemistry of Neogene igneous rocks in the Goloumak area, south of Kerman, Iran. , 1402; (): -. doi: 10.22059/jsciences.2023.361095.1007806

Petrogenesis and Sr-Nd isotope geochemistry of Neogene igneous rocks in the Goloumak area, south of Kerman, Iran

Journal of Sciences, Islamic Republic of Iran
مقالات آماده انتشار، اصلاح شده برای چاپ، انتشار آنلاین از تاریخ 14 اسفند 1402
نوع مقاله: Original Paper
شناسه دیجیتال (DOI): 10.22059/jsciences.2023.361095.1007806
نویسندگان
gholamreza ghadami* 1؛ Farzaneh Arzhangnegad2؛ Mohammad Poosti3؛ Mohammad Fadaeian4
1Assistant Professor, Department of Geology, University of Hormozgan, Bandar abbas, Hormozgan, Iran
2Department of Geology, Faculty of Sciences, University of Hormozgan, Iran
3Department of Geology, Faculty of Sciences, University of Hormozgan, Hormozgan, Iran
4Department of Geology, Payame Noor University, Tehran, Iran
چکیده
The study area is near Goloumak village, 30 km south of Kerman city. These rock units consist of acidic rhyolite and dacite, as well as intermediate andesite, basalt, and trachy-andesite. Basic igneous rocks are alkaline and intermediate rocks are calc-alkaline to transition range. Volcanic rocks show depletion in Ba, Ti, Nb, and Ta and enrichment of K, Rb, and Th. Basaltic rocks were formed by partial melting of the mantle, based on 87Sr/86Sr and 144Nd/143Nd isotopic ratios. Samples show relative enrichment of 87Sr/86Sr in the mantle array on the Sr-Nd isotope correlation diagram. Basic rocks are affected by subduction of lithospheric slab or mantle crust metasomatism, as per the comparison of studied samples in the 143Nd/144Nd isotope correlation diagram versus 87Sr/86Sr. Based on Sr-Nd geochronological data, the rocks were formed at 12.5 ±2.0 Ma, corresponding to the Miocene for the basaltic rocks. All samples are in a continental arc margin and post-collision volcanic arc. The magma source is from low to intermediate partial melting of the mantle, as indicated by the LREE/HREE ratio of the basic and intermediate. LREE enrichment is due to low partial melting of mantle source and magma contamination by crust materials. Basalts show a low melting degree of the mantle for magma formation. Depletion of these rocks of HREE in the source shows garnet in genesis. La and Sm abundance in the studied composition is similar to magma derived from the enriched mantle, comprising about 1-5% of lherzolitic garnet.
کلیدواژه‌ها
Petrogenesis؛ Sr-Nd Isotope؛ Neogene؛ Goloumak؛ Kerman
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تعداد مشاهده مقاله: 55


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