Long-lived, stationary magmatism and pulsed porphyry systems during Tethyan subduction to post-collision evolution in the southernmost Lesser Caucasus, Armenia and Nakhitchevan

Abstract

Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Geneva, Switzerland; e-mail: robert.moritz@unige.ch A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT

Transport of Volatile-rich Melt from the Mantle Transition Zone via Compaction Pockets: Implications for Mantle Metasomatism and the Origin of Alkaline Lavas in the Turkish–Iranian Plateau

“…14b). On the one hand, detailed petrological studies show that all these potassic rocks originated from mantle sources enriched by additional phases (see Castro et al, 2013;Kananian et al, 2014;Moritz et al, 2016;Ahmadian et al, 2016). As mentioned earlier, alkaline melt-mantle rock interaction could lead to the formation of phlogopite at lithospheric depths.…”

“…Late Cretaceous to Eocene transitional high K calc-alkaline to potassic lavas and pyroclastic deposits (period 3) interlayered with sedimentary sequences follow the Lesser Caucasus, the Armenia block and the Talysh Mountains in the north-east border of NW Iran (Vincent et al, 2005). Eocene to Oligo-Miocene lavas and associated plutonic rocks (period 4) with high K calc-alkaline or potassic affinities only occur in Armenia and the NW of Iran (Aghazadeh et al, 2010;Castro et al, 2013;Moritz et al, 2016). Plio-Quaternary eruptions (younger than 3 Ma) are mainly exposed in the south of the Armenia block parallel to the Lesser Caucasus Suture and consist of medium to high K calc-alkaline mafic to intermediate lavas and pyroclastic deposits (e.g.…”

“…The plutonic rocks have been divided into Ferroan (A-type), potassic and infracrustal (I-type) high-K calc-alkaline granitoids (e.g. Dargahi et al, 2010;Karsli et al, 2012b;Castro et al, 2013;Nabatian et al, 2014;Kananian et al, 2014;Moritz et al, 2016;Ahmadian et al, 2016). The chemical characteristics of the granitoids are more complex than those of the volcanic rocks because their parental magmas experienced a variety of processes, including fractional crystallization (Karsli et al, 2012b;Castro et al, 2013;Nabatian et al, 2014;Kananian et al, 2014;Ahmadian et al, 2016).…”

Relict basin closure and crustal shortening budgets during continental collision: An example from Caucasus sediment provenance

“…The Greater Caucasus basin opened as a back arc of the Lesser Caucasus Arc, to the north in present coordinates. Geochronologic and geochemical data from Jurassic to Eocene igneous rocks of the Lesser Caucasus indicate a subduction source [Mederer et al, 2013;Moritz et al, 2016;Sahakyan et al, 2016]. The modern structural architecture of active faults in the Lesser Caucasus is poorly understood, with north directed thrusting, south directed thrusting, and strike-slip faults all proposed as dominant structures [Koçyiğit et al, 2001;Philip et al, 1989;Rebaï et al, 1993].…”

Fluid Inclusion Studies on Quartz Veinlets at the Ali Javad Porphyry Copper (Gold) Deposit, Arasbaran, Northwestern Iran

“…Arasbaran porphyry copper belt in the northwestern Iran bridges eastern and western parts of the Alp-Himalayan metallogenic belt. The belt stretches northwestward to Gharabagh Mountains in Azerbaijan which finally ends in Armenia and Turkey, hosting numerous porphyry copper deposits [5] [16]. The belt extends south and southeastward into Central Iran metallogenic belt.…”