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Article: A comparison of U-Pb and Hf isotopic compositions of detrital zircons from the North and South Liaohe Groups: Constraints on the evolution of the Jiao-Liao-Ji Belt, North China Craton
Title | A comparison of U-Pb and Hf isotopic compositions of detrital zircons from the North and South Liaohe Groups: Constraints on the evolution of the Jiao-Liao-Ji Belt, North China Craton |
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Authors | |
Keywords | Detrital zircon Hf isotope LA-ICP-MS Liaohe Group North China Craton U-Pb age |
Issue Date | 2008 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamres |
Citation | Precambrian Research, 2008, v. 163 n. 3-4, p. 279-306 How to Cite? |
Abstract | The Jiao-Liao-Ji orogenic belt is one of the important Paleoproterozoic mobile belts in the North China Craton (NCC) and its central segment consists of the North and South Liaohe Groups and the Liaoji Granitoids. The North and South Liaohe Groups consist of sedimentary and volcanic successions metamorphosed from greenschist to lower amphibolite facies, and the Liaoji granitoids are divisible into 2.2-2.1 Ga (pre-tectonic) monzogranitic gneisses and 1.88-1.85 Ga (post-tectonic) porphyritic monzogranites and alkaline syenites. Combined with cathodoluminescence (CL) imaging, we report LA-ICP-MS (laser ablation inductively coupled plasma mass spectrometry) U-Pb and Hf isotopic data for detrital zircons from the North and South Liaohe Groups. Zircons grains from both groups have igneous zircon cores that yielded two U-Pb age populations at 2.0-2.2 Ga (major) and ∼2.5 Ga (minor), indicating that their provenances were similarly dominated by Paleoproterozoic Liaoji Granitoids and late Archean basement rocks. Some structureless zircon rims in both groups yield concordant or upper intercept ages ∼1.9 Ga, interpreted as the peak metamorphic age of the two groups. These results suggest that both groups were deposited in the period 2.0-1.9 Ga, shortly after the emplacement of the Liaoji Granitoids. Moreover, zircons from both groups have similar Hf model age peaks (T DM C peaks at 2.66-2.75 Ga and 2.80-3.00 Ga) and εHf values (-5 to +9 and -7 to +5). Based on these striking similarities, we propose that the protoliths of the North and South Groups may have formed simultaneously, and that the basement rocks underneath the two groups belong to the same Archean continental block rather than two different blocks as previously considered. The Archean basement underwent Paleoproterozoic rifting, accompanied by the emplacement of the Liaoji granitoids at 2.2-2.1 Ga and the deposition of the North and South Liaohe Groups at 2.1-1.9 Ga, and the rift was subsequently closed by ∼1.9 Ga. © 2008 Elsevier B.V. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/151242 |
ISSN | 2023 Impact Factor: 3.2 2023 SCImago Journal Rankings: 1.589 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Luo, Y | en_HK |
dc.contributor.author | Sun, M | en_HK |
dc.contributor.author | Zhao, G | en_HK |
dc.contributor.author | Li, S | en_HK |
dc.contributor.author | Ayers, JC | en_HK |
dc.contributor.author | Xia, X | en_HK |
dc.contributor.author | Zhang, J | en_HK |
dc.date.accessioned | 2012-06-26T06:19:11Z | - |
dc.date.available | 2012-06-26T06:19:11Z | - |
dc.date.issued | 2008 | en_HK |
dc.identifier.citation | Precambrian Research, 2008, v. 163 n. 3-4, p. 279-306 | en_HK |
dc.identifier.issn | 0301-9268 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/151242 | - |
dc.description.abstract | The Jiao-Liao-Ji orogenic belt is one of the important Paleoproterozoic mobile belts in the North China Craton (NCC) and its central segment consists of the North and South Liaohe Groups and the Liaoji Granitoids. The North and South Liaohe Groups consist of sedimentary and volcanic successions metamorphosed from greenschist to lower amphibolite facies, and the Liaoji granitoids are divisible into 2.2-2.1 Ga (pre-tectonic) monzogranitic gneisses and 1.88-1.85 Ga (post-tectonic) porphyritic monzogranites and alkaline syenites. Combined with cathodoluminescence (CL) imaging, we report LA-ICP-MS (laser ablation inductively coupled plasma mass spectrometry) U-Pb and Hf isotopic data for detrital zircons from the North and South Liaohe Groups. Zircons grains from both groups have igneous zircon cores that yielded two U-Pb age populations at 2.0-2.2 Ga (major) and ∼2.5 Ga (minor), indicating that their provenances were similarly dominated by Paleoproterozoic Liaoji Granitoids and late Archean basement rocks. Some structureless zircon rims in both groups yield concordant or upper intercept ages ∼1.9 Ga, interpreted as the peak metamorphic age of the two groups. These results suggest that both groups were deposited in the period 2.0-1.9 Ga, shortly after the emplacement of the Liaoji Granitoids. Moreover, zircons from both groups have similar Hf model age peaks (T DM C peaks at 2.66-2.75 Ga and 2.80-3.00 Ga) and εHf values (-5 to +9 and -7 to +5). Based on these striking similarities, we propose that the protoliths of the North and South Groups may have formed simultaneously, and that the basement rocks underneath the two groups belong to the same Archean continental block rather than two different blocks as previously considered. The Archean basement underwent Paleoproterozoic rifting, accompanied by the emplacement of the Liaoji granitoids at 2.2-2.1 Ga and the deposition of the North and South Liaohe Groups at 2.1-1.9 Ga, and the rift was subsequently closed by ∼1.9 Ga. © 2008 Elsevier B.V. All rights reserved. | en_HK |
dc.language | eng | en_US |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamres | en_HK |
dc.relation.ispartof | Precambrian Research | en_HK |
dc.rights | Precambrian Research. Copyright © Elsevier BV. | - |
dc.subject | Detrital zircon | en_HK |
dc.subject | Hf isotope | en_HK |
dc.subject | LA-ICP-MS | en_HK |
dc.subject | Liaohe Group | en_HK |
dc.subject | North China Craton | en_HK |
dc.subject | U-Pb age | en_HK |
dc.title | A comparison of U-Pb and Hf isotopic compositions of detrital zircons from the North and South Liaohe Groups: Constraints on the evolution of the Jiao-Liao-Ji Belt, North China Craton | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Sun, M: minsun@hku.hk | en_HK |
dc.identifier.email | Zhao, G: gzhao@hkucc.hku.hk | en_HK |
dc.identifier.email | Xia, X: xpxia@hotmail.com | en_HK |
dc.identifier.authority | Sun, M=rp00780 | en_HK |
dc.identifier.authority | Zhao, G=rp00842 | en_HK |
dc.identifier.authority | Xia, X=rp00815 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1016/j.precamres.2008.01.002 | en_HK |
dc.identifier.scopus | eid_2-s2.0-43149102487 | en_HK |
dc.identifier.hkuros | 142871 | - |
dc.identifier.volume | 163 | en_HK |
dc.identifier.issue | 3-4 | en_HK |
dc.identifier.spage | 279 | en_HK |
dc.identifier.epage | 306 | en_HK |
dc.identifier.isi | WOS:000256930500005 | - |
dc.publisher.place | Netherlands | en_HK |
dc.identifier.scopusauthorid | Luo, Y=49161174100 | en_HK |
dc.identifier.scopusauthorid | Sun, M=25932315800 | en_HK |
dc.identifier.scopusauthorid | Zhao, G=7403296321 | en_HK |
dc.identifier.scopusauthorid | Li, S=8784176300 | en_HK |
dc.identifier.scopusauthorid | Ayers, JC=7102796988 | en_HK |
dc.identifier.scopusauthorid | Xia, X=35241486400 | en_HK |
dc.identifier.scopusauthorid | Zhang, J=9940975100 | en_HK |
dc.identifier.issnl | 0301-9268 | - |