GEOCHEMISTRY AND PALEOTECTONOMAGMATIC SETTING OF METABASITES PROTOLITH FROM ASALEM METAMORPHIC COMPLEX (NORTHWEST RASHT)

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NASRABADI MOHSEN; SAADAT MOHAMMAD

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: PETROLOGY Year:2017 | Volume:7 | Issue:28 Page(s): 161-179

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Information Journal Paper

Title

GEOCHEMISTRY AND PALEOTECTONOMAGMATIC SETTING OF METABASITES PROTOLITH FROM ASALEM METAMORPHIC COMPLEX (NORTHWEST RASHT)

Author(s)

NASRABADI MOHSEN | SAADAT MOHAMMAD | Issue Writer Certificate

Keywords

WHOLE ROCK CHEMISTRYQ1

PALEOTECTONOMAGMATIC SETTINGQ1

METABASITEQ2

ASALEM METAMORPHIC COMPLEXQ1

ALBORZQ2

Abstract

Asalem metamorphic complex consists mostly of METABASITE, metapelite and serpentinite. METABASITEs display metamorphic features of greenschist and blueschist facies. Greenschist facies rocks that found as both foliated and massive types contain mineralogical assemblage of actinolite, chlorite, albite and epidote. Blueschists contain mineralogical assemblage of sodic amphibole, epidote and phengite. Whole rock analyses of the METABASITEs indicate basaltic to andesitic composition with mainly calcalkaline nature of their protolith. According to the discrimination diagrams of tectonomagmatic setting, the protolith of investigated METABASITEs has been islands arc and somewhat mid ocean ridge. The patterns of rare earth elements and spider diagrams of the Asalem METABASITEs resemble to the basic and intermediate magmatism of islands arc or suprasubduction setting as well. Greenschists and blueschists facies rocks of the ASALEM METAMORPHIC COMPLEX have been probably equivalent to islands arc or young and hot oceanic crust of suprasubduction zone setting. This portion of oceanic basin unlike the subducted even and thick oceanic lithosphere of Paleotethys during accretion in the shallower levels of accretionary prisms, have underwent metamorphic conditions of blueschist and green schist facies and finally gave rise to the formation of the METABASITEs of the ASALEM METAMORPHIC COMPLEX.

Cites

Tourmaline genesis in the metamorphic and magmatic rocks of Gasht-e-Rudkhan district (Gasht metamorphic Complex, West of Rasht)

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APA: Copy

NASRABADI, MOHSEN, & SAADAT, MOHAMMAD. (2017). GEOCHEMISTRY AND PALEOTECTONOMAGMATIC SETTING OF METABASITES PROTOLITH FROM ASALEM METAMORPHIC COMPLEX (NORTHWEST RASHT). PETROLOGY, 7(28 ), 161-179. SID. https://sid.ir/paper/197065/en

Vancouver: Copy

NASRABADI MOHSEN, SAADAT MOHAMMAD. GEOCHEMISTRY AND PALEOTECTONOMAGMATIC SETTING OF METABASITES PROTOLITH FROM ASALEM METAMORPHIC COMPLEX (NORTHWEST RASHT). PETROLOGY[Internet]. 2017;7(28 ):161-179. Available from: https://sid.ir/paper/197065/en

IEEE: Copy

MOHSEN NASRABADI, and MOHAMMAD SAADAT, “GEOCHEMISTRY AND PALEOTECTONOMAGMATIC SETTING OF METABASITES PROTOLITH FROM ASALEM METAMORPHIC COMPLEX (NORTHWEST RASHT),” PETROLOGY, vol. 7, no. 28 , pp. 161–179, 2017, [Online]. Available: https://sid.ir/paper/197065/en

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