ZIRCON URANIUM-LEAD DATING, PETROGRAPHY AND GEOCHEMISTRY FOR SUB VOLCANIC BODIES IN SOUTH-WEST OF BIRJAND (RICH AREA)

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ZARINKOUB M.H.; CHUNG S.L.; KHATIB M.H.; MOHAMMADI S.S.

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Journal Paper

Paper Information

Journal: Iranian Journal of Crystallography and Mineralogy Year:2010 | Volume:18 | Issue:3 Page(s): 0-0

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Title

ZIRCON URANIUM-LEAD DATING, PETROGRAPHY AND GEOCHEMISTRY FOR SUB VOLCANIC BODIES IN SOUTH-WEST OF BIRJAND (RICH AREA)

Author(s)

ZARINKOUB M.H. | CHUNG S.L. | KHATIB M.H. | MOHAMMADI S.S. | Issue Writer Certificate

Keywords

DATING

ZIRCON URANIUM-LEAD

SUBVOLCANIC BODIES

OPHIOLITE MÉLANGE

SOUTHWEST OF BIRJAND

Abstract

Rich area’s sub volcanic bodies in SOUTHWEST OF BIRJAND have intruded into upper cretaceous OPHIOLITE MÉLANGE. These rocks are in diorite porphyry to monzonite porphyry range and their main texture is porphyry with microgranular groudmass. Plagioclase and green hornblende phenocrysts are made about 70% of these rocks. Plagioclases are andesine with albitic and carlsbad twining and distinct zoning which altered to calcium carbonate in center parts. Hornblende phenocrysts have altered partly to biotite so show a weakly potassic alteration. The average ratio of Ce/Yb in these rocks are 25.40 show they belong to an enrich magmatic arc. There is a negative anomaly in high field strength elements (HFSE) such as P, Nb and Ti in these rocks which is a geochemical character for continental margin magmatic arc. High ratio of LREE / HREE, Sr/Y (average is 38.14), and SiO2 amount with absent of Eu negative anomaly show these rocks are very similar to high SiO2 adakites. High ratio of Sr/Y can be interpreted of high depth melting in plagioclase unstability and garnet stability field. The source of this magma can be an eclogite or garnet amphibolites which derived of subducted metamorphosed oceanic plate in east of Iran. DATING with zircon uranium- lead show this magmatic event occurred 39.1±0.7 Ma (late Eocene).

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APA: Copy

ZARINKOUB, M.H., CHUNG, S.L., KHATIB, M.H., & MOHAMMADI, S.S.. (2010). ZIRCON URANIUM-LEAD DATING, PETROGRAPHY AND GEOCHEMISTRY FOR SUB VOLCANIC BODIES IN SOUTH-WEST OF BIRJAND (RICH AREA). IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 18(3), 0-0. SID. https://sid.ir/paper/557786/en

Vancouver: Copy

ZARINKOUB M.H., CHUNG S.L., KHATIB M.H., MOHAMMADI S.S.. ZIRCON URANIUM-LEAD DATING, PETROGRAPHY AND GEOCHEMISTRY FOR SUB VOLCANIC BODIES IN SOUTH-WEST OF BIRJAND (RICH AREA). IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2010;18(3):0-0. Available from: https://sid.ir/paper/557786/en

IEEE: Copy

M.H. ZARINKOUB, S.L. CHUNG, M.H. KHATIB, and S.S. MOHAMMADI, “ZIRCON URANIUM-LEAD DATING, PETROGRAPHY AND GEOCHEMISTRY FOR SUB VOLCANIC BODIES IN SOUTH-WEST OF BIRJAND (RICH AREA),” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 18, no. 3, pp. 0–0, 2010, [Online]. Available: https://sid.ir/paper/557786/en

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