Geochemistry and petrogenesis of Koudakan granitoid intrusion (eastern of Lut block)

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omidipour s.; RAHGOSHAY M.; MONSEF I.

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Journal: GEOSCIENCES Year:2019 | Volume:29 | Issue:113 Page(s): 89-100

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Title

Geochemistry and petrogenesis of Koudakan granitoid intrusion (eastern of Lut block)

Author(s)

omidipour s. | RAHGOSHAY M. | MONSEF I. | Issue Writer Certificate

Keywords

GeochemistryQ2

PetrogenesisQ1

Koudakan granitoidQ1

Lut blockQ2

Eocene-Oligocene magmatismQ1

Abstract

Koudakan granitoid located in 100 km South of Birjand and 18 km North of Ghaleh-Zari mine in eastern Iran. It belong to the Lut block volcanic– plutonic belt. These intrusive rocks (Eocene-Oligocene) petrogaphicaly composed of Diorite, Monzodiorite, Quartzmonzodiorite, Tonalite, Porphyritic Tonalite, Granodiorite, Granite and Porphyritic Granite. Plutonic rocks in this area have features typical of high-K calc-alkaline to shoshonite series, metaluminous and belong to I-type Granitoides. Enrichment in LILE rather than HFSE (RbN/YN: 38. 12-124. 93), negative anomalies of Nb and Ti and enrichment in LREE rather than HREE (LaN/YbN: 6. 74-12. 03) in all of samples are important evidences for the formation of this rocks in a subduction related magmatic belt. Positive anomalies of Pb and K indicate the involvement of continental crust in evolution of parental magma. Parallel trend of the samples in spider diagrams show that they are co-genetic. Elements ratios and Different discrimination diagrams show the formation of this rocks in an active continental margin with about less than 45 Km crustal thickness in per-collision steps. Parental magma has been generated by low degree partial melting (less than 5%) of an enriched peridotite in mantle wedge (Spinel lherzolite. ).

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APA: Copy

omidipour, s., RAHGOSHAY, M., & MONSEF, I.. (2019). Geochemistry and petrogenesis of Koudakan granitoid intrusion (eastern of Lut block). GEOSCIENCES, 29(113 ), 89-100. SID. https://sid.ir/paper/31371/en

Vancouver: Copy

omidipour s., RAHGOSHAY M., MONSEF I.. Geochemistry and petrogenesis of Koudakan granitoid intrusion (eastern of Lut block). GEOSCIENCES[Internet]. 2019;29(113 ):89-100. Available from: https://sid.ir/paper/31371/en

IEEE: Copy

s. omidipour, M. RAHGOSHAY, and I. MONSEF, “Geochemistry and petrogenesis of Koudakan granitoid intrusion (eastern of Lut block),” GEOSCIENCES, vol. 29, no. 113 , pp. 89–100, 2019, [Online]. Available: https://sid.ir/paper/31371/en

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