Geochronology and geological significance of the strata of the Neoproterozoic Nanhua System, SW North China Craton
A set of low-grade clastic metamorphic and carbonate rocks, and greenschists outcropping in the southwestern (SW) margin of the North China Craton (NCC), was originally classified as the Paleoproterozoic Xiong'er Group according to stratigraphic correlation. To verify the age, this paper carrie...
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| Veröffentlicht in: | Acta geochimica 2023-10, Vol.42 (5), p.912-933 |
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| description | A set of low-grade clastic metamorphic and carbonate rocks, and greenschists outcropping in the southwestern (SW) margin of the North China Craton (NCC), was originally classified as the Paleoproterozoic Xiong'er Group according to stratigraphic correlation. To verify the age, this paper carried out detrital zircon U–Pb LA-ICP-MS dating of low-grade clastic metamorphic rocks exposed in the Changqing area at the SW margin of the Ordos Block in the SW part of the NCC. Results from detrital zircon dating indicate that the metamorphic and carbonate rocks can be classified into the Neoproterozoic Nanhua System, which is the only Nanhua System stratum in this block so far, and it probably could provide new clues to Rodinia break-up and Snowball Earth of the NCC. The nine peak ages of the low-grade clastic metamorphic rocks reflected its relatively complex provenance, and almost all major geological events experienced by the NCC basement since the Neoarchean, but some age peaks were difficult to correspond to that of the NCC, indicating that the southwestern part of the Ordos Block was also affected by the Qinling and Qiliang orogenic belts during Nanhua System of Neoproterozoic. Combined with provenance analysis, it was revealed that the current southwest boundary of the Ordos Block was the previous southwest boundary of the Ordos Block during the Qingbaikou-Nanhua Period of the Neoproterozoic. |
| doi_str_mv | 10.1007/s11631-023-00624-8 |
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To verify the age, this paper carried out detrital zircon U–Pb LA-ICP-MS dating of low-grade clastic metamorphic rocks exposed in the Changqing area at the SW margin of the Ordos Block in the SW part of the NCC. Results from detrital zircon dating indicate that the metamorphic and carbonate rocks can be classified into the Neoproterozoic Nanhua System, which is the only Nanhua System stratum in this block so far, and it probably could provide new clues to Rodinia break-up and Snowball Earth of the NCC. The nine peak ages of the low-grade clastic metamorphic rocks reflected its relatively complex provenance, and almost all major geological events experienced by the NCC basement since the Neoarchean, but some age peaks were difficult to correspond to that of the NCC, indicating that the southwestern part of the Ordos Block was also affected by the Qinling and Qiliang orogenic belts during Nanhua System of Neoproterozoic. Combined with provenance analysis, it was revealed that the current southwest boundary of the Ordos Block was the previous southwest boundary of the Ordos Block during the Qingbaikou-Nanhua Period of the Neoproterozoic.</description><identifier>ISSN: 2096-0956</identifier><identifier>EISSN: 2365-7499</identifier><identifier>DOI: 10.1007/s11631-023-00624-8</identifier><language>eng</language><publisher>Heidelberg: Science Press</publisher><subject>Carbonate rocks ; Carbonates ; Cratons ; Earth and Environmental Science ; Earth Sciences ; Geochemistry ; Geochronology ; Geochronometry ; Geology ; Greenschists ; Metamorphic rocks ; Original Article ; Orogeny ; Palaeoclimatology ; Stratigraphic correlation ; Stratigraphy ; Zircon</subject><ispartof>Acta geochimica, 2023-10, Vol.42 (5), p.912-933</ispartof><rights>The Author(s), under exclusive licence to Science Press and Institute of Geochemistry, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c304t-153409177fd5daae07529292ef14611dc50ceff49e7ff223126ad4f510cee92b3</cites><orcidid>0000-0001-7396-7309</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.wanfangdata.com.cn/images/PeriodicalImages/zgdqhx-e/zgdqhx-e.jpg</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11631-023-00624-8$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11631-023-00624-8$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids></links><search><creatorcontrib>Chen, Guanxu</creatorcontrib><creatorcontrib>Jinhai, Luo</creatorcontrib><creatorcontrib>Gennian, Sun</creatorcontrib><creatorcontrib>Zhan, Meng</creatorcontrib><creatorcontrib>Yinglei, Chang</creatorcontrib><creatorcontrib>Zhuo, Chen</creatorcontrib><title>Geochronology and geological significance of the strata of the Neoproterozoic Nanhua System, SW North China Craton</title><title>Acta geochimica</title><addtitle>Acta Geochim</addtitle><description>A set of low-grade clastic metamorphic and carbonate rocks, and greenschists outcropping in the southwestern (SW) margin of the North China Craton (NCC), was originally classified as the Paleoproterozoic Xiong'er Group according to stratigraphic correlation. To verify the age, this paper carried out detrital zircon U–Pb LA-ICP-MS dating of low-grade clastic metamorphic rocks exposed in the Changqing area at the SW margin of the Ordos Block in the SW part of the NCC. Results from detrital zircon dating indicate that the metamorphic and carbonate rocks can be classified into the Neoproterozoic Nanhua System, which is the only Nanhua System stratum in this block so far, and it probably could provide new clues to Rodinia break-up and Snowball Earth of the NCC. The nine peak ages of the low-grade clastic metamorphic rocks reflected its relatively complex provenance, and almost all major geological events experienced by the NCC basement since the Neoarchean, but some age peaks were difficult to correspond to that of the NCC, indicating that the southwestern part of the Ordos Block was also affected by the Qinling and Qiliang orogenic belts during Nanhua System of Neoproterozoic. 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| subjects | Carbonate rocks Carbonates Cratons Earth and Environmental Science Earth Sciences Geochemistry Geochronology Geochronometry Geology Greenschists Metamorphic rocks Original Article Orogeny Palaeoclimatology Stratigraphic correlation Stratigraphy Zircon |
| title | Geochronology and geological significance of the strata of the Neoproterozoic Nanhua System, SW North China Craton |
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