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The Neoproterozoic S‐Type Granites in the Western Jiangnan Orogen: Petrogenetic and Geodynamic Implications.

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Title: The Neoproterozoic S‐Type Granites in the Western Jiangnan Orogen: Petrogenetic and Geodynamic Implications.
Authors: Gao, Ying1,2 (AUTHOR), Huang, Mingda1 (AUTHOR) huangmingdacugb@163.com, Ismail, Mohd Ashraf bin Mohamad2 (AUTHOR), Yang, Junwei1 (AUTHOR), Li, Tao1 (AUTHOR), Liu, Hongyang1 (AUTHOR), Huang, Yuqi1 (AUTHOR), Zhang, Xianzhao1 (AUTHOR)
Source: Acta Geologica Sinica (English Edition). Jun2026, Vol. 100 Issue 3, p673-687. 15p.
Subject Terms: *Petrogenesis, *Geodynamics, *Granite, *Hafnium isotopes, *Uranium-lead dating, *Orogenic belts, *Island arcs, *Rodinia (Supercontinent)
Abstract: The mid‐Neoproterozoic tectonic evolution of the western Jiangnan Orogen in the context of the Rodinia supercontinent remains unresolved due to debates regarding the interpretation of the petrogenesis of igneous rocks. In this study, we present an integrated dataset of petrology, whole‐rock geochemistry, zircon U‐Pb ages, and Hf isotopes for granitic samples from the Fanjingshan area in the western Jiangnan Orogen. LA‐ICP‐MS zircon U‐Pb dating indicates that they crystallised ca. 810 Ma. Whole‐rock geochemical data demonstrate that they exhibit typical features of S‐type granites and were derived from dehydration melting of a metasedimentary protolith. Zircon εHf(t) values range from −7.9 to 1.6, with a main peak value of −3.5. Two‐stage Hf model ages of 1.5–1.9 Ga suggest that these granites were derived from ancient crustal materials. Extensive fractional crystallisation and magmatic–hydrothermal interactions are inferred from low rare earth element (REE) contents, low Nb/Ta and Zr/Hf ratios, and a distinct REE tetrad effect. Combined with coeval arc‐related magmatism and rift basins, the Fanjingshan granites were most likely emplaced in a back‐arc setting. Available data indicate that rift basins occurred extensively at the periphery of the Yangtze Block ca. 810 Ga, implying their involvement in the breakup of the Rodinia supercontinent. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 195037685
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: The Neoproterozoic S‐Type Granites in the Western Jiangnan Orogen: Petrogenetic and Geodynamic Implications.
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  Data: <searchLink fieldCode="AR" term="%22Gao%2C+Ying%22">Gao, Ying</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Mingda%22">Huang, Mingda</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> huangmingdacugb@163.com</i><br /><searchLink fieldCode="AR" term="%22Ismail%2C+Mohd+Ashraf+bin+Mohamad%22">Ismail, Mohd Ashraf bin Mohamad</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Junwei%22">Yang, Junwei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Tao%22">Li, Tao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Hongyang%22">Liu, Hongyang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Yuqi%22">Huang, Yuqi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xianzhao%22">Zhang, Xianzhao</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Acta+Geologica+Sinica+%28English+Edition%29%22">Acta Geologica Sinica (English Edition)</searchLink>. Jun2026, Vol. 100 Issue 3, p673-687. 15p.
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  Data: *<searchLink fieldCode="DE" term="%22Petrogenesis%22">Petrogenesis</searchLink><br />*<searchLink fieldCode="DE" term="%22Geodynamics%22">Geodynamics</searchLink><br />*<searchLink fieldCode="DE" term="%22Granite%22">Granite</searchLink><br />*<searchLink fieldCode="DE" term="%22Hafnium+isotopes%22">Hafnium isotopes</searchLink><br />*<searchLink fieldCode="DE" term="%22Uranium-lead+dating%22">Uranium-lead dating</searchLink><br />*<searchLink fieldCode="DE" term="%22Orogenic+belts%22">Orogenic belts</searchLink><br />*<searchLink fieldCode="DE" term="%22Island+arcs%22">Island arcs</searchLink><br />*<searchLink fieldCode="DE" term="%22Rodinia+%28Supercontinent%29%22">Rodinia (Supercontinent)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The mid‐Neoproterozoic tectonic evolution of the western Jiangnan Orogen in the context of the Rodinia supercontinent remains unresolved due to debates regarding the interpretation of the petrogenesis of igneous rocks. In this study, we present an integrated dataset of petrology, whole‐rock geochemistry, zircon U‐Pb ages, and Hf isotopes for granitic samples from the Fanjingshan area in the western Jiangnan Orogen. LA‐ICP‐MS zircon U‐Pb dating indicates that they crystallised ca. 810 Ma. Whole‐rock geochemical data demonstrate that they exhibit typical features of S‐type granites and were derived from dehydration melting of a metasedimentary protolith. Zircon εHf(t) values range from −7.9 to 1.6, with a main peak value of −3.5. Two‐stage Hf model ages of 1.5–1.9 Ga suggest that these granites were derived from ancient crustal materials. Extensive fractional crystallisation and magmatic–hydrothermal interactions are inferred from low rare earth element (REE) contents, low Nb/Ta and Zr/Hf ratios, and a distinct REE tetrad effect. Combined with coeval arc‐related magmatism and rift basins, the Fanjingshan granites were most likely emplaced in a back‐arc setting. Available data indicate that rift basins occurred extensively at the periphery of the Yangtze Block ca. 810 Ga, implying their involvement in the breakup of the Rodinia supercontinent. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1111/1755-6724.70055
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 673
    Subjects:
      – SubjectFull: Petrogenesis
        Type: general
      – SubjectFull: Geodynamics
        Type: general
      – SubjectFull: Granite
        Type: general
      – SubjectFull: Hafnium isotopes
        Type: general
      – SubjectFull: Uranium-lead dating
        Type: general
      – SubjectFull: Orogenic belts
        Type: general
      – SubjectFull: Island arcs
        Type: general
      – SubjectFull: Rodinia (Supercontinent)
        Type: general
    Titles:
      – TitleFull: The Neoproterozoic S‐Type Granites in the Western Jiangnan Orogen: Petrogenetic and Geodynamic Implications.
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            NameFull: Gao, Ying
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            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 100
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            – TitleFull: Acta Geologica Sinica (English Edition)
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