COMMON MELTING REACTIONS AND THEIR CHARACTERISTICS IN THE ALVAND AUREOLE METAPELITES, HAMADAN

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SAKI A.; BAHARIFAR A.A.

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Journal: GEOSCIENCES Year:2012 | Volume:21 | Issue:82 Page(s): 165-172

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Title

COMMON MELTING REACTIONS AND THEIR CHARACTERISTICS IN THE ALVAND AUREOLE METAPELITES, HAMADAN

Author(s)

SAKI A. | BAHARIFAR A.A. | Issue Writer Certificate

Keywords

MIGMATITE ROCKSQ2

ALVAND AUREOLEQ2

MELTING REACTIONQ2

GRANULITE-FACIESQ2

Abstract

Intrusion of the Alvand complex (intrusions formed during Jurassic) into the host metapelitic rocks (schists) created pelitic hornfelses and anatectic migmatites in the ALVAND AUREOLE. Partial melting in the ALVAND AUREOLE was restricted to pelitic bulk compositions. Existing of spinel-quartz minerals and appearance of orthopyroxene in these rocks marks the transition from amphibolite- to GRANULITE-FACIES conditions, and is commonly attributed to the process of fluid-absent partial melting. Reactions Sil/And + Bt = Crd + Spl+ Kfs + melt and Bt+Als+Pl+Qtz = Grt+Kfs+melt, are the most reactions for the development of melt in the metapelitic rocks of ALVAND AUREOLE. This metamorphism is mainly controlled by conductive heat transfer through magmatic intrusions into all levels of the crust. The Hamadan metamorphic rocks have experienced multiple episodes of metamorphism driven by burial and heating during arc construction and collision during subduction of a Neotethyan seaway and subsequent oblique collision of Afro-Arabia (Gondwana)with the Iranian microcontinent in the Jurassic-Cretaceous, and these events are associated with local partial melting at high grades, near the Alvand complex pluton.

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APA: Copy

SAKI, A., & BAHARIFAR, A.A.. (2012). COMMON MELTING REACTIONS AND THEIR CHARACTERISTICS IN THE ALVAND AUREOLE METAPELITES, HAMADAN. GEOSCIENCES, 21(82), 165-172. SID. https://sid.ir/paper/32512/en

Vancouver: Copy

SAKI A., BAHARIFAR A.A.. COMMON MELTING REACTIONS AND THEIR CHARACTERISTICS IN THE ALVAND AUREOLE METAPELITES, HAMADAN. GEOSCIENCES[Internet]. 2012;21(82):165-172. Available from: https://sid.ir/paper/32512/en

IEEE: Copy

A. SAKI, and A.A. BAHARIFAR, “COMMON MELTING REACTIONS AND THEIR CHARACTERISTICS IN THE ALVAND AUREOLE METAPELITES, HAMADAN,” GEOSCIENCES, vol. 21, no. 82, pp. 165–172, 2012, [Online]. Available: https://sid.ir/paper/32512/en

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