Fractionation mechanism of iron isotopes in highly fractionated granites from the Xinxian Pluton, Western Dabie Orogen, Central China
Iron isotopes are important for tracing the magmatic process. The fractionation of iron isotopes in granite is up to 0.55 ‰. In this study, Wangjiagou (XWJ) granite and Tayueping (XTY) granite in the Xinxian pluton of the Western Dabie orogen were evaluated. Both the XTY and XWJ granite belong to mo...
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| description | Iron isotopes are important for tracing the magmatic process. The fractionation of iron isotopes in granite is up to 0.55 ‰. In this study, Wangjiagou (XWJ) granite and Tayueping (XTY) granite in the Xinxian pluton of the Western Dabie orogen were evaluated. Both the XTY and XWJ granite belong to monzogranites, with high SiO
2
(74.42–76.82 wt.%) contents. The granites are depleted of Nb and Ti but enriched with Pb and K, and they display negative Eu anomalies (Eu/Eu* = 0.40–0.52) on REE plots that are normalized by chondrite. The δ
56
Fe values of the XTY granites vary from 0.19 ± 0.03 ‰ to 0.27 ± 0.04‰, and the δ
56
Fe values of the XWJ granites are 0.34 ± 0.02 ‰ and 0.36 ± 0.01 ‰, respectively. Both the XTY and the XWJ granites belong to highly fractionated granites due to their SI (solidification index), DI (differentiation index), and content of CaO. Evidence from the iron isotopes shows that neither fluid exsolution, alteration, weathering, nor partial melting can explain the enrichment of the heavy iron isotopes. The results modeled using the Rayleigh equation showed that fractional crystallization can produce Δ
56
Fe
melt-crystal
with the value of 0.08–0.15 ‰. In conclusion, fractional crystallization was the main factor controlling the fractionation of iron isotopes, and the change of melt composition may also lead to the enrichment of heavy iron isotopes in the residual melt. |
| doi_str_mv | 10.1007/s11631-022-00567-6 |
| format | Article |
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2
(74.42–76.82 wt.%) contents. The granites are depleted of Nb and Ti but enriched with Pb and K, and they display negative Eu anomalies (Eu/Eu* = 0.40–0.52) on REE plots that are normalized by chondrite. The δ
56
Fe values of the XTY granites vary from 0.19 ± 0.03 ‰ to 0.27 ± 0.04‰, and the δ
56
Fe values of the XWJ granites are 0.34 ± 0.02 ‰ and 0.36 ± 0.01 ‰, respectively. Both the XTY and the XWJ granites belong to highly fractionated granites due to their SI (solidification index), DI (differentiation index), and content of CaO. Evidence from the iron isotopes shows that neither fluid exsolution, alteration, weathering, nor partial melting can explain the enrichment of the heavy iron isotopes. The results modeled using the Rayleigh equation showed that fractional crystallization can produce Δ
56
Fe
melt-crystal
with the value of 0.08–0.15 ‰. In conclusion, fractional crystallization was the main factor controlling the fractionation of iron isotopes, and the change of melt composition may also lead to the enrichment of heavy iron isotopes in the residual melt.</description><identifier>ISSN: 2096-0956</identifier><identifier>EISSN: 2365-7499</identifier><identifier>DOI: 10.1007/s11631-022-00567-6</identifier><language>eng</language><publisher>Heidelberg: Science Press</publisher><subject>Anomalies ; Crystallization ; Earth and Environmental Science ; Earth Sciences ; Enrichment ; Fractional crystallization ; Fractionation ; Geochemistry ; Granite ; Iron ; Iron isotopes ; Isotopes ; Original Article ; Orogeny ; Plutons ; Rayleigh equations ; Silica ; Silicon dioxide ; Solidification</subject><ispartof>Acta geochimica, 2022-12, Vol.41 (6), p.911-925</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 2022. Springer Nature or its licensor 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-a257t-39238be4e081a14461c1dc2044ae94edd3b2947dcf67998ccf9e236f8f361a4b3</cites><orcidid>0000-0002-9330-6169</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/s11631-022-00567-6$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11631-022-00567-6$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Deng, Chenglai</creatorcontrib><creatorcontrib>Hu, Changqing</creatorcontrib><creatorcontrib>Wen, Qiuyu</creatorcontrib><creatorcontrib>Yang, Wenbin</creatorcontrib><creatorcontrib>Li, Wu</creatorcontrib><title>Fractionation mechanism of iron isotopes in highly fractionated granites from the Xinxian Pluton, Western Dabie Orogen, Central China</title><title>Acta geochimica</title><addtitle>Acta Geochim</addtitle><description>Iron isotopes are important for tracing the magmatic process. The fractionation of iron isotopes in granite is up to 0.55 ‰. In this study, Wangjiagou (XWJ) granite and Tayueping (XTY) granite in the Xinxian pluton of the Western Dabie orogen were evaluated. Both the XTY and XWJ granite belong to monzogranites, with high SiO
2
(74.42–76.82 wt.%) contents. The granites are depleted of Nb and Ti but enriched with Pb and K, and they display negative Eu anomalies (Eu/Eu* = 0.40–0.52) on REE plots that are normalized by chondrite. The δ
56
Fe values of the XTY granites vary from 0.19 ± 0.03 ‰ to 0.27 ± 0.04‰, and the δ
56
Fe values of the XWJ granites are 0.34 ± 0.02 ‰ and 0.36 ± 0.01 ‰, respectively. Both the XTY and the XWJ granites belong to highly fractionated granites due to their SI (solidification index), DI (differentiation index), and content of CaO. Evidence from the iron isotopes shows that neither fluid exsolution, alteration, weathering, nor partial melting can explain the enrichment of the heavy iron isotopes. The results modeled using the Rayleigh equation showed that fractional crystallization can produce Δ
56
Fe
melt-crystal
with the value of 0.08–0.15 ‰. In conclusion, fractional crystallization was the main factor controlling the fractionation of iron isotopes, and the change of melt composition may also lead to the enrichment of heavy iron isotopes in the residual melt.</description><subject>Anomalies</subject><subject>Crystallization</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Enrichment</subject><subject>Fractional crystallization</subject><subject>Fractionation</subject><subject>Geochemistry</subject><subject>Granite</subject><subject>Iron</subject><subject>Iron isotopes</subject><subject>Isotopes</subject><subject>Original Article</subject><subject>Orogeny</subject><subject>Plutons</subject><subject>Rayleigh equations</subject><subject>Silica</subject><subject>Silicon dioxide</subject><subject>Solidification</subject><issn>2096-0956</issn><issn>2365-7499</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9kc1KxDAUhYsoKKMv4CrgSrCav6bNUkZHBUEXiu5Cpr1pI51kTDo4uve9jVacnZsk3HznhJyTZYcEnxKMy7NIiGAkx5TmGBeizMVWtkeZKPKSS7mdzliKHMtC7GYHMb5gjEklBOfVXvY5C7oerHf6e0ELqDvtbFwgb5ANaWKjH_wSIrIOdbbt-ndk_iTQoDYkfkj3JvgFGjpAz9atrXbovl8N3p2gJ4gDBIcu9NwCugu-hTSdghuC7tG0s07vZztG9xEOfvdJ9ji7fJhe57d3VzfT89tc06IcciYpq-bAAVdEE84FqUlTU8y5BsmhadicSl42tRGllFVdGwkpB1MZJojmczbJjkffN-2Mdq168avg0ovqo21eu7UCmlLEIgWU2KORXQb_ukp_2MC0ZKQUTFYyUXSk6uBjDGDUMtiFDu-KYPXdjhrbUclX_bSjRBKxURQT7FoIG-t_VF8bGJNf</recordid><startdate>20221201</startdate><enddate>20221201</enddate><creator>Deng, Chenglai</creator><creator>Hu, Changqing</creator><creator>Wen, Qiuyu</creator><creator>Yang, Wenbin</creator><creator>Li, Wu</creator><general>Science Press</general><general>Springer Nature B.V</general><general>Key Laboratory of Coalbed Methane Resource and Reservoir Formation Process,Ministry of Education,China University of Mining and Technology,Xuzhou 221116,People's Republic of China</general><general>School of Earth Resources,China University of Geosciences,Wuhan 430074,China%Key Laboratory of Coalbed Methane Resource and Reservoir Formation Process,Ministry of Education,China University of Mining and Technology,Xuzhou 221116,People's Republic of China%Metal Stable Isotope Geochemistry Laboratory,University of Science and Technology of China,Hefei 230026,China</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7UA</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>JG9</scope><scope>KR7</scope><scope>L.G</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope><orcidid>https://orcid.org/0000-0002-9330-6169</orcidid></search><sort><creationdate>20221201</creationdate><title>Fractionation mechanism of iron isotopes in highly fractionated granites from the Xinxian Pluton, Western Dabie Orogen, Central China</title><author>Deng, Chenglai ; Hu, Changqing ; Wen, Qiuyu ; Yang, Wenbin ; Li, Wu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a257t-39238be4e081a14461c1dc2044ae94edd3b2947dcf67998ccf9e236f8f361a4b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Anomalies</topic><topic>Crystallization</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Enrichment</topic><topic>Fractional crystallization</topic><topic>Fractionation</topic><topic>Geochemistry</topic><topic>Granite</topic><topic>Iron</topic><topic>Iron isotopes</topic><topic>Isotopes</topic><topic>Original Article</topic><topic>Orogeny</topic><topic>Plutons</topic><topic>Rayleigh equations</topic><topic>Silica</topic><topic>Silicon dioxide</topic><topic>Solidification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Deng, Chenglai</creatorcontrib><creatorcontrib>Hu, Changqing</creatorcontrib><creatorcontrib>Wen, Qiuyu</creatorcontrib><creatorcontrib>Yang, Wenbin</creatorcontrib><creatorcontrib>Li, Wu</creatorcontrib><collection>CrossRef</collection><collection>Water Resources Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Acta geochimica</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Deng, Chenglai</au><au>Hu, Changqing</au><au>Wen, Qiuyu</au><au>Yang, Wenbin</au><au>Li, Wu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fractionation mechanism of iron isotopes in highly fractionated granites from the Xinxian Pluton, Western Dabie Orogen, Central China</atitle><jtitle>Acta geochimica</jtitle><stitle>Acta Geochim</stitle><date>2022-12-01</date><risdate>2022</risdate><volume>41</volume><issue>6</issue><spage>911</spage><epage>925</epage><pages>911-925</pages><issn>2096-0956</issn><eissn>2365-7499</eissn><abstract>Iron isotopes are important for tracing the magmatic process. The fractionation of iron isotopes in granite is up to 0.55 ‰. In this study, Wangjiagou (XWJ) granite and Tayueping (XTY) granite in the Xinxian pluton of the Western Dabie orogen were evaluated. Both the XTY and XWJ granite belong to monzogranites, with high SiO
2
(74.42–76.82 wt.%) contents. The granites are depleted of Nb and Ti but enriched with Pb and K, and they display negative Eu anomalies (Eu/Eu* = 0.40–0.52) on REE plots that are normalized by chondrite. The δ
56
Fe values of the XTY granites vary from 0.19 ± 0.03 ‰ to 0.27 ± 0.04‰, and the δ
56
Fe values of the XWJ granites are 0.34 ± 0.02 ‰ and 0.36 ± 0.01 ‰, respectively. Both the XTY and the XWJ granites belong to highly fractionated granites due to their SI (solidification index), DI (differentiation index), and content of CaO. Evidence from the iron isotopes shows that neither fluid exsolution, alteration, weathering, nor partial melting can explain the enrichment of the heavy iron isotopes. The results modeled using the Rayleigh equation showed that fractional crystallization can produce Δ
56
Fe
melt-crystal
with the value of 0.08–0.15 ‰. In conclusion, fractional crystallization was the main factor controlling the fractionation of iron isotopes, and the change of melt composition may also lead to the enrichment of heavy iron isotopes in the residual melt.</abstract><cop>Heidelberg</cop><pub>Science Press</pub><doi>10.1007/s11631-022-00567-6</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0002-9330-6169</orcidid></addata></record> |
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| subjects | Anomalies Crystallization Earth and Environmental Science Earth Sciences Enrichment Fractional crystallization Fractionation Geochemistry Granite Iron Iron isotopes Isotopes Original Article Orogeny Plutons Rayleigh equations Silica Silicon dioxide Solidification |
| title | Fractionation mechanism of iron isotopes in highly fractionated granites from the Xinxian Pluton, Western Dabie Orogen, Central China |
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