PETROLOGY AND GEOCHEMISTRY OF THE METAMORPHIC ROCKS OF MASAL- SHANDERMAN REGION (SW BANDAR-E-ANZALI)

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NOORI F.; POURMOAFI M.; LANKARANI M.; MASOUDI F.

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2012 | Volume:20 | Issue:3 Page(s): 429-440

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Title

PETROLOGY AND GEOCHEMISTRY OF THE METAMORPHIC ROCKS OF MASAL- SHANDERMAN REGION (SW BANDAR-E-ANZALI)

Author(s)

NOORI F. | POURMOAFI M. | LANKARANI M. | MASOUDI F. | Issue Writer Certificate

Keywords

SHANDERMAN METAMORPHIC COMPLEXQ2

PETROLOGYQ2

GEOCHEMISTRYQ2

METABASITEQ2

METAPELITEQ2

PASSIVE MARGINQ2

SUBDUCTION ZONEQ1

Abstract

The SHANDERMAN METAMORPHIC COMPLEX, located in the west of Gilan Province and southwest of Bandar-e-Anzali, is composed of a variety of metamorphic rocks (including slate, schist, calk-schist, marble, serpentinite, metagabbro and eclogite). Based on petrologic studies, protoliths of these rocks have had ultramafic, gabbro-gabbro noritic and pelitic composition.Mineralogically, the metapelitic rocks contain biotite, chlorite, muscovite, andalusite and metabasitic rocks contain amphibole, garnet, olivine, pyroxene and serpentine. Predominant texture of the rocks is porphyrolepidoblastic or nematoblastic. Zr/Y ratio of these rocks, which is less than 3, shows that they are similar to oceanic island arc rocks. Negative anomalies of Ti, P, and K and positive anomaly of Pb (appeared in spider diagrams) are evidences for their relation to crustal assimilated SUBDUCTION ZONEs. Distribution pattern of trace elements such Th, Hf, La, and U in the studied METAPELITEs indicates a transition from PASSIVE MARGIN towards island arc. The characteristics of the studied assemblage show that it was developed in an oceanic PASSIVE MARGIN and then evolved within SUBDUCTION ZONE.

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سن مجموعه دگرگونه و افیولیت های اسالم-شاندرمن و ارتباط ژئودینامیکی آن ها با پالئوتتیس و پوسته شبه اقیانوسی خزر

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APA: Copy

NOORI, F., POURMOAFI, M., LANKARANI, M., & MASOUDI, F.. (2012). PETROLOGY AND GEOCHEMISTRY OF THE METAMORPHIC ROCKS OF MASAL- SHANDERMAN REGION (SW BANDAR-E-ANZALI). IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 20(3), 429-440. SID. https://sid.ir/paper/4097/en

Vancouver: Copy

NOORI F., POURMOAFI M., LANKARANI M., MASOUDI F.. PETROLOGY AND GEOCHEMISTRY OF THE METAMORPHIC ROCKS OF MASAL- SHANDERMAN REGION (SW BANDAR-E-ANZALI). IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2012;20(3):429-440. Available from: https://sid.ir/paper/4097/en

IEEE: Copy

F. NOORI, M. POURMOAFI, M. LANKARANI, and F. MASOUDI, “PETROLOGY AND GEOCHEMISTRY OF THE METAMORPHIC ROCKS OF MASAL- SHANDERMAN REGION (SW BANDAR-E-ANZALI),” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 20, no. 3, pp. 429–440, 2012, [Online]. Available: https://sid.ir/paper/4097/en

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