Crustal Evolution of NW Iran: Cadomian Arcs, Archean Fragments and the Cenozoic Magmatic Flare-Up

doi:10.1093/petrology/egy005

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Crustal Evolution of NW Iran: Cadomian Arcs, Archean Fragments and the Cenozoic Magmatic Flare-Up
	Moghadam, Hadi Shafaii 1,2,3,4; Griffin, William L.3,4; Li, Xian-Hua 5; Santos, Jose F.6; Karsli, Orhan 7; Stern, Robert J.8; Ghorbani, Ghasem 2; Gain, Sarah 3,4; Murphy, Rosanna 3,4; O'Reilly, Suzanne Y.3,4
刊名	JOURNAL OF PETROLOGY
	2017-11-01
卷号	58 期号:11 页码:2143-2190
关键词	Cadomian Magmatism Iran U-pb Zircon Geochronology Urumieh-dokhtar Magmatic Belt Zircon Hf Isotopes
ISSN号	0022-3530
DOI	10.1093/petrology/egy005
文献子类	Article
英文摘要	The Cadomian orogen of NW Iran includes a series of metamorphic rocks with zircon U-Pb ages between ca 562 and 505 Ma (Ediacaran to middle Cambrian). The Ediacaran-Cambrian basement is intruded by a series of Late Eocene-Late Oligocene I-type granitic rocks. U-Pb geochronology, integrated with geochemical and isotopic data for the basement rocks in NW Iran, provides further evidence of a Cadomian (562-505 Ma) arc-related magmatic event lasting similar to 60 Myr. Cadomian magmatism in Iran was a part of a similar to 100 Myr long episode of subduction-related arc magmatism at the northern margin of Gondwana. Zircon Hf-isotope compositions show that during Cadomian magmatic arc activity, juvenile arc magmas interacted with reworked Archean crust to generate the Ediacaran-Cambrian igneous rocks. Our results document both inheritance of old zircons and the presence of zircons with juvenile signatures in NW Iran, suggesting that the geotectonic setting for the Cadomian rocks was an Ediacaran continental magmatic arc and probably a neighboring back-arc basin. The occurrence of Ediacaran ophiolitic slices in NW Iran may provide evidence of back-arc basin opening at that time. Cenozoic plutonism in NW Iran is part of an Eocene-Oligocene magmatic 'flare-up' along the Urumieh-Dokhtar Magmatic Belt in central Iran, which lasted for ca 30 Myr. The melts responsible for the formation of these rocks had an essentially juvenile signature with minor contamination by Archean to Cadomian middle-lower continental crust. Continuous convergence between Arabia and Iran was accompanied by the transition of SW Eurasia from a compressional to an extensional convergent plate margin in Eocene-Oligocene times, leading to orogenic collapse, core-complex formation, exhumation of Cadomian crust and a major increase in arc magmatism.
WOS关键词	METAMORPHIC CORE COMPLEX ; PB ZIRCON GEOCHRONOLOGY ; NATURAL REFERENCE MATERIAL ; NORTHERN ACTIVE MARGIN ; ARABIAN-NUBIAN SHIELD ; HF ISOTOPIC EVIDENCE ; NE IRAN ; TECTONIC EVOLUTION ; HUQF SUPERGROUP ; PAN-AFRICAN
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000429465900003
资助机构	DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; ARC LIEF ; ARC LIEF ; NCRIS/AuScope ; NCRIS/AuScope ; Macquarie University ; Macquarie University ; Chinese Academy of Sciences(XDB18000000 ; Chinese Academy of Sciences(XDB18000000 ; FCT (Portugal)(UID/GEO/04035/2013) ; FCT (Portugal)(UID/GEO/04035/2013) ; 2015VEC063) ; 2015VEC063) ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; ARC LIEF ; ARC LIEF ; NCRIS/AuScope ; NCRIS/AuScope ; Macquarie University ; Macquarie University ; Chinese Academy of Sciences(XDB18000000 ; Chinese Academy of Sciences(XDB18000000 ; FCT (Portugal)(UID/GEO/04035/2013) ; FCT (Portugal)(UID/GEO/04035/2013) ; 2015VEC063) ; 2015VEC063) ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; ARC LIEF ; ARC LIEF ; NCRIS/AuScope ; NCRIS/AuScope ; Macquarie University ; Macquarie University ; Chinese Academy of Sciences(XDB18000000 ; Chinese Academy of Sciences(XDB18000000 ; FCT (Portugal)(UID/GEO/04035/2013) ; FCT (Portugal)(UID/GEO/04035/2013) ; 2015VEC063) ; 2015VEC063) ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; ARC LIEF ; ARC LIEF ; NCRIS/AuScope ; NCRIS/AuScope ; Macquarie University ; Macquarie University ; Chinese Academy of Sciences(XDB18000000 ; Chinese Academy of Sciences(XDB18000000 ; FCT (Portugal)(UID/GEO/04035/2013) ; FCT (Portugal)(UID/GEO/04035/2013) ; 2015VEC063) ; 2015VEC063)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88344]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Moghadam, Hadi Shafaii
作者单位	1.Univ Mohaghegh Ardabili, Dept Geol, Fac Sci, Ardebil 5619913131, Iran 2.Damghan Univ, Sch Earth Sci, Damghan 3671641167, Iran 3.Macquarie Univ, ARC Ctr Excellence Core Crust Fluid Syst, N Ryde, NSW 2109, Australia 4.Macquarie Univ, GEMOC ARC Natl Key Ctr, Dept Earth & Planetary Sci, N Ryde, NSW 2109, Australia 5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 6.Univ Aveiro, Dept Geociencias, Geobiotec, P-3810193 Aveiro, Portugal 7.Recep Tayyip Erdogan Univ, Dept Geol Engn, TR-53000 Rize, Turkey 8.Univ Texas Dallas, Geosci Dept, Richardson, TX 75083 USA
推荐引用方式 GB/T 7714	Moghadam, Hadi Shafaii,Griffin, William L.,Li, Xian-Hua,et al. Crustal Evolution of NW Iran: Cadomian Arcs, Archean Fragments and the Cenozoic Magmatic Flare-Up[J]. JOURNAL OF PETROLOGY,2017,58(11):2143-2190.
APA	Moghadam, Hadi Shafaii.,Griffin, William L..,Li, Xian-Hua.,Santos, Jose F..,Karsli, Orhan.,...&O'Reilly, Suzanne Y..(2017).Crustal Evolution of NW Iran: Cadomian Arcs, Archean Fragments and the Cenozoic Magmatic Flare-Up.JOURNAL OF PETROLOGY,58(11),2143-2190.
MLA	Moghadam, Hadi Shafaii,et al."Crustal Evolution of NW Iran: Cadomian Arcs, Archean Fragments and the Cenozoic Magmatic Flare-Up".JOURNAL OF PETROLOGY 58.11(2017):2143-2190.