Petrology of the Neogene volcanic rocks in south Arab abad, Lut Block

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KHALATBARI JAFARI MORTEZA; Banehee Narmin; Faridi Mohamad; MORADI MEHDI

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Journal: GEOSCIENCES Year:2020 | Volume:30 | Issue:117 Page(s): 123-134

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Information Journal Paper

Title

Petrology of the Neogene volcanic rocks in south Arab abad, Lut Block

Author(s)

KHALATBARI JAFARI MORTEZA | Banehee Narmin | Faridi Mohamad | MORADI MEHDI | Issue Writer Certificate

Keywords

Calk-alkalineQ2

LithosphereQ1

MantleQ1

Post-CollisionQ1

Lut blockQ2

Abstract

The Neogene volcanic rocks are exposed in south Arab abad, Lut block. The studied volcanic rocks covered Eocene and Oligocene volcanic lavas and Neogene evaporitic deposits. The base of the Neogene volcanic sequence made of breccia and tuff gradually covered by andesite, trachyandesite and dacitic lavas. These lavas have aphyric-phyric textures and microlitic to hyalomicrolitice in matrix. These lavas show calck alkaline magmatic trend. REE patterns and spider diagrams display enrichement in LREE and LILE relative to HREE and depletion in HFSE which like as subduction zone magmatism. In the tectonomagmatic diagrams they plot of subduction and Post-Collisions fields. Interpretation of the geochemical data indicates that the studied lavas probably produced from partial melting of lithospheric Mantle which had previously enriched by subduction components (fluids and melt). Partial melting of crust, probably involved in generation of acidic lavas. It seems that in the Neogene period, Lithosphere thinning induced partial melting of heterogeneous Sub Continental Lithospheric Mantle (SCLM). These processes consequently occurred by lithospheric delamination and asthenospheric upwelling.

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APA: Copy

KHALATBARI JAFARI, MORTEZA, Banehee, Narmin, Faridi, Mohamad, & MORADI, MEHDI. (2020). Petrology of the Neogene volcanic rocks in south Arab abad, Lut Block. GEOSCIENCES, 30(117 ), 123-134. SID. https://sid.ir/paper/408928/en

Vancouver: Copy

KHALATBARI JAFARI MORTEZA, Banehee Narmin, Faridi Mohamad, MORADI MEHDI. Petrology of the Neogene volcanic rocks in south Arab abad, Lut Block. GEOSCIENCES[Internet]. 2020;30(117 ):123-134. Available from: https://sid.ir/paper/408928/en

IEEE: Copy

MORTEZA KHALATBARI JAFARI, Narmin Banehee, Mohamad Faridi, and MEHDI MORADI, “Petrology of the Neogene volcanic rocks in south Arab abad, Lut Block,” GEOSCIENCES, vol. 30, no. 117 , pp. 123–134, 2020, [Online]. Available: https://sid.ir/paper/408928/en

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