GEOCHEMISTRY, PETROLOGY AND ZIRCON U-PB DATING FOR BIBI MARYAM GRANITOID, NE OF NEHBANDAN, EAST OF IRAN

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

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Journal: JOURNAL OF ECONOMIC GEOLOGY Year:2011 | Volume:3 | Issue:1 Page(s): 15-27

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Information Journal Paper

Title

GEOCHEMISTRY, PETROLOGY AND ZIRCON U-PB DATING FOR BIBI MARYAM GRANITOID, NE OF NEHBANDAN, EAST OF IRAN

Author(s)

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

Keywords

GRANITOIDQ2

BIBI MARYAMQ2

DATINGQ1

ZIRCON U-PBQ2

EAST OF IRANQ2

Abstract

Bibi Maryam GRANITOID body with about 5 Km2 has intruded into ophiolite melange complex in sistan suture zone, in EAST OF IRAN. Thermal effects of this body on the host rocks show that this activity occurred after emplacement of ophiolite melange. This intrusive body with general northwest–southeast trend is mainly tonalite-quartz diorite but there is a minor unit as dykes of granodiorite in the northwest side. Main texture in tonalite-quartz diorite is granular and in granodiorite part, granular, myrmekitic and graphic are popular. Quartz, plagioclase (oligoclase-andesin) and biotite are the main minerals and the minors are amphibol, apatite, zircon and opaque in the main body. Quartz, sodium plagioclase and alkali feldspar are the main minerals and the minors are garnet, apatite and opaque minerals in granodiorite unit. BIBI MARYAM GRANITOID is magmatic arc type and has plotted in calc-alkaline, metaluminous to peraluminous field.High ratio of LREE/HREE, Sr/Y (average is 38.7), and SiO2 amount(average is 69.48) 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 sub ducted metamorphosed oceanic plate in EAST OF IRAN. DATING on zircon grains in the main body (tonalite-quartzdiorite) with zircon uranium–lead shows this magmatic event has occurred at 71.5±0.6 Ma (maestrichtian). Based on this DATING, the emplacement of host ophiolite melange should occurred before maestrichtian.

Cites

GEOCHEMISTRY AND PETRO GENESIS OF GIVSHAD VOLCANIC AND SUB VOLCANIC ROCKS (SOUTHWEST OF BIRJAND, EAST OF IRAN)

References

PETROGRAPHY, GEOCHEMISTRY, GENESIS AND TECTONIC SETTING OF MESGARAN AREA GRANITOIDS (SOUTH-EAST OF BIRJAND)

Cite

APA: Copy

ZARRINKOUB, M.H., CHUNG, S.L., MOHAMMADI, S.S., & KHATIB, M.H.. (2011). GEOCHEMISTRY, PETROLOGY AND ZIRCON U-PB DATING FOR BIBI MARYAM GRANITOID, NE OF NEHBANDAN, EAST OF IRAN. JOURNAL OF ECONOMIC GEOLOGY, 3(1), 15-27. SID. https://sid.ir/paper/180420/en

Vancouver: Copy

ZARRINKOUB M.H., CHUNG S.L., MOHAMMADI S.S., KHATIB M.H.. GEOCHEMISTRY, PETROLOGY AND ZIRCON U-PB DATING FOR BIBI MARYAM GRANITOID, NE OF NEHBANDAN, EAST OF IRAN. JOURNAL OF ECONOMIC GEOLOGY[Internet]. 2011;3(1):15-27. Available from: https://sid.ir/paper/180420/en

IEEE: Copy

M.H. ZARRINKOUB, S.L. CHUNG, S.S. MOHAMMADI, and M.H. KHATIB, “GEOCHEMISTRY, PETROLOGY AND ZIRCON U-PB DATING FOR BIBI MARYAM GRANITOID, NE OF NEHBANDAN, EAST OF IRAN,” JOURNAL OF ECONOMIC GEOLOGY, vol. 3, no. 1, pp. 15–27, 2011, [Online]. Available: https://sid.ir/paper/180420/en

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