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Evidence for Archean crust in Iran provided by ca 2.7 Ga zircon xenocrysts within amphibolites from the Sanandaj-Sirjan zone, Zagros orogen
Shakerardakani, Farzaneh1,2; Li, Xian-Hua1,2,3; Ling, Xiao-Xiao1,2; Li, Jiao1,2; Tang, Guo-Qiang1,2,3; Liu, Yu1,2,3; Monfared, Behzad4
2019-09-15
Source PublicationPRECAMBRIAN RESEARCH
ISSN0301-9268
Volume332Pages:12
AbstractHigh-precision secondary-ion mass spectrometry (SIMS) U-Pb and Hf-O isotopic microanalyses of zircons from the central Sanandaj-Sirjan metamorphic zone (SSMZ) of the Zagros orogen, Iran, provide evidence of the presence of 2.7 Ga xenocrystic zircons, suggesting that the SSMZ records Neoarchean crustal components that have not previously been reported in Iran. The two amphibolite samples analyzed from the Muteh-Golpaygan metamorphic complex during this study include one sample (GQ-10) that yielded xenocrystic zircons with ages clustered around ca 2.7 Ga. The second sample (GC-15) contains zircons that show two distinct xenocrystic zircon domains with ages of (i) ca 2.7 and 2.5 Ga, and (ii) ca 52 Ma. The ca 2.7 Ga zircons and zircon domains have homogeneous, mantle-like delta O-18 values with a mean of 6.10 +/- 0.69 parts per thousand. They have epsilon Hf(t) values that vary between +0.2 to +6.8 with T-DM(C) ages of 3.1-2.7 Ga, suggesting they crystallized from granitoid melts derived from juvenile components. However, the younger ca 2.5 Ga zircons yield an average delta O-18 value of 6.17 +/- 0.24 parts per thousand and have evolved Hf isotopic compositions (epsilon Hf(t) -0.8 to -3.4; T-DM(C) = 3.2-3.1 Ga), indicating that the older crust in this region underwent more intense later reworking than is the case for crustal material formed at ca 2.7 Ga. These data provide evidence of Neoarchean basement rocks in this region, indicating that the SSMZ records ancient crustal growth events. The youngest ca 52 Ma xenocrystic zircons within these samples most likely reflect the late Paleocene-Eocene magmatic 'flare-up' within Iran. These zircons have slightly elevated delta O-18 values (7.69 +/- 0.21 parts per thousand) and negative Hf isotopic compositions (epsilon Hf(t) -8.3 to -12.1; T-DM(C) = 1.9-1.6 Ga), suggesting intensive crustal reworking at ca 50 Ma.
KeywordNeoarchean crust U-Pb geochronology Hf-O isotopes Sanandaj-Sirjan zone Iran
DOI10.1016/j.precamres.2019.105390
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
WOS KeywordU-PB AGE ; ARABIA-EURASIA COLLISION ; HF-O ISOTOPES ; NW IRAN ; LU-HF ; NORTHWESTERN CANADA ; TECTONIC EVOLUTION ; NORTHERN GONDWANA ; WORKING REFERENCE ; SAGHAND REGION
Language英语
Funding ProjectNational Key R&D Program of China[2016YFE0203000] ; Chinese Academy of Sciences[QYZDY-SSW-DQC017] ; Chinese Academy of Sciences[XDB18030000] ; Chinese Academy of Sciences
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000487566500022
PublisherELSEVIER
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93699
Collection岩石圈演化国家重点实验室
Corresponding AuthorShakerardakani, Farzaneh; Li, Xian-Hua
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Karl Franzens Univ Graz, NAWI Graz Geoctr, Dept Petr & Geochem, Univ Pl 2, A-8010 Graz, Austria
First Author AffilicationState Key Laboratory of Lithospheric Evolution;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shakerardakani, Farzaneh,Li, Xian-Hua,Ling, Xiao-Xiao,et al. Evidence for Archean crust in Iran provided by ca 2.7 Ga zircon xenocrysts within amphibolites from the Sanandaj-Sirjan zone, Zagros orogen[J]. PRECAMBRIAN RESEARCH,2019,332:12.
APA Shakerardakani, Farzaneh.,Li, Xian-Hua.,Ling, Xiao-Xiao.,Li, Jiao.,Tang, Guo-Qiang.,...&Monfared, Behzad.(2019).Evidence for Archean crust in Iran provided by ca 2.7 Ga zircon xenocrysts within amphibolites from the Sanandaj-Sirjan zone, Zagros orogen.PRECAMBRIAN RESEARCH,332,12.
MLA Shakerardakani, Farzaneh,et al."Evidence for Archean crust in Iran provided by ca 2.7 Ga zircon xenocrysts within amphibolites from the Sanandaj-Sirjan zone, Zagros orogen".PRECAMBRIAN RESEARCH 332(2019):12.
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