Volume 10, Issue 1 (Spring & Summer 2024)
KJES 2024, 10(1): 123-151 |
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Torkian A, Mohammadi M. Azizabad-Hazarkhani granitoid, NE of Songhor: Evidence of a subduction event in the N- Sanandaj-Sirjan continental arc. KJES 2024; 10 (1) :123-151
URL: http://gnf.khu.ac.ir/article-1-2896-en.html
URL: http://gnf.khu.ac.ir/article-1-2896-en.html
1- Bu -Ali Sina University , a-torkian@basu.ac.ir
2- Bu -Ali Sina University
2- Bu -Ali Sina University
Abstract: (256 Views)
The study area is located in the SaSZ, NE of Songhor city, Kermanshah Province. Based on field observations and mineralogical data, the Azizabad-Hazarkhani I-type calc-alkaline granitoid consists of granites, monzonites and diorites with small volumes of gabbroic rocks. Co-variations in major and trace elemental abundances do not indicate a continuous compositional suite and therefore do not suggest a co-magmatic origin. According to geochemical evidence, the samples are enriched in incompatible elements such as Th, Rb, La, Ce and Nd and depleted in Nb, Ti and Eu, with metaluminous affinity. These characteristics reflect the role of continental crust and crust-derived melts. Tectonic setting discrimination diagrams suggest that this complex belongs to the volcanic arc and is related to an active continental margin setting. According to the geological history of this area, it can be attributed to the subduction of Neo-Tethyan oceanic crust below the Central Iran microplate. We suggest that the Parishan and Darvazeh mantle-derived basaltic magmas may have provided the heat required for the partial melting of various source rocks, including amphibolites, meta-basites, and meta-andesites, through diffusive heating.
Type of Study: Original Research |
Subject:
Petrology
Received: 2024/04/8 | Accepted: 2024/08/1 | Published: 2024/09/9
Received: 2024/04/8 | Accepted: 2024/08/1 | Published: 2024/09/9
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