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Petrogenesis and Geodynamics of the Early Paleozoic Tangwan Leucogranites, the Wuyi Region of the Cathaysia Block, SE China.

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Title: Petrogenesis and Geodynamics of the Early Paleozoic Tangwan Leucogranites, the Wuyi Region of the Cathaysia Block, SE China.
Authors: Zhentao Song1,2,3 (AUTHOR), Hong, Wentao3,4 (AUTHOR) hongwt.cgs@foxmail.com, Zhao, Zihao3,4 (AUTHOR)
Source: Geochemistry International. Jun2026, Vol. 64 Issue 6, p445-460. 16p.
Subject Terms: *Petrogenesis, *Geodynamics, *Physiographic provinces, *Granite, *Paleozoic Era
Geographic Terms: China
Abstract: Early Paleozoic leucogranites are rare in SE China, and their petrogenesis remains controversial. Here we present zircon U–Pb ages, Lu–Hf isotopes and whole-rock geochemical data for the Tangwan leucogranite in the Wuyi region of the Cathaysia Block to constrain its origin and geodynamic setting. The Tangwan leucogranite was emplaced at approximately 438 Ma. The relatively high Nb/Ta (8.39–9.32), Zr/Hf (28.6–31.8), K/Rb (130–247) and Eu/Eu* ratios (0.47–0.68), together with low TE1,3 values (0.97–1.04), indicate that the Tangwan leucogranite is not a highly fractionated granite. The low Zr + Nb + Ce +Y contents (<200 ppm) and Ga/Al ratios (<2.5) but high A/CNK ratios (>1.2), the presence of muscovite and the absence of mafic melanocratic minerals collectively point to an S-type affinity. The enriched Nd–Hf isotopic compositions, relatively high Rb/Sr ratios (>2), moderate TLREE and TZr values (699–794°C), and low TiO2 contents (<0.2 wt %) suggest derivation from ancient metasedimentary rocks sources via muscovite dehydration melting. The weakly differentiated early Paleozoic leucogranites in SE China formed in a syn-collisional compressional regime, whereas highly differentiated leucogranites record the post-collisional extension driven by mantled-derived magma underplating that supplied sufficient heat. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 195093703
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Petrogenesis and Geodynamics of the Early Paleozoic Tangwan Leucogranites, the Wuyi Region of the Cathaysia Block, SE China.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Zhentao+Song%22&quot;&gt;Zhentao Song&lt;/searchLink&gt;&lt;relatesTo&gt;1,2,3&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Hong%2C+Wentao%22&quot;&gt;Hong, Wentao&lt;/searchLink&gt;&lt;relatesTo&gt;3,4&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; hongwt.cgs@foxmail.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Zhao%2C+Zihao%22&quot;&gt;Zhao, Zihao&lt;/searchLink&gt;&lt;relatesTo&gt;3,4&lt;/relatesTo&gt; (AUTHOR)
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Geochemistry+International%22&quot;&gt;Geochemistry International&lt;/searchLink&gt;. Jun2026, Vol. 64 Issue 6, p445-460. 16p.
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  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Petrogenesis%22&quot;&gt;Petrogenesis&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Geodynamics%22&quot;&gt;Geodynamics&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Physiographic+provinces%22&quot;&gt;Physiographic provinces&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Granite%22&quot;&gt;Granite&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Paleozoic+Era%22&quot;&gt;Paleozoic Era&lt;/searchLink&gt;
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22China%22&quot;&gt;China&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Early Paleozoic leucogranites are rare in SE China, and their petrogenesis remains controversial. Here we present zircon U–Pb ages, Lu–Hf isotopes and whole-rock geochemical data for the Tangwan leucogranite in the Wuyi region of the Cathaysia Block to constrain its origin and geodynamic setting. The Tangwan leucogranite was emplaced at approximately 438 Ma. The relatively high Nb/Ta (8.39–9.32), Zr/Hf (28.6–31.8), K/Rb (130–247) and Eu/Eu* ratios (0.47–0.68), together with low TE1,3 values (0.97–1.04), indicate that the Tangwan leucogranite is not a highly fractionated granite. The low Zr + Nb + Ce +Y contents (&lt;200 ppm) and Ga/Al ratios (&lt;2.5) but high A/CNK ratios (&gt;1.2), the presence of muscovite and the absence of mafic melanocratic minerals collectively point to an S-type affinity. The enriched Nd–Hf isotopic compositions, relatively high Rb/Sr ratios (&gt;2), moderate TLREE and TZr values (699–794&#176;C), and low TiO2 contents (&lt;0.2 wt %) suggest derivation from ancient metasedimentary rocks sources via muscovite dehydration melting. The weakly differentiated early Paleozoic leucogranites in SE China formed in a syn-collisional compressional regime, whereas highly differentiated leucogranites record the post-collisional extension driven by mantled-derived magma underplating that supplied sufficient heat. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=195093703
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1134/S001670292560141X
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 16
        StartPage: 445
    Subjects:
      – SubjectFull: Petrogenesis
        Type: general
      – SubjectFull: Geodynamics
        Type: general
      – SubjectFull: Physiographic provinces
        Type: general
      – SubjectFull: Granite
        Type: general
      – SubjectFull: Paleozoic Era
        Type: general
      – SubjectFull: China
        Type: general
    Titles:
      – TitleFull: Petrogenesis and Geodynamics of the Early Paleozoic Tangwan Leucogranites, the Wuyi Region of the Cathaysia Block, SE China.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Zhentao Song
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          Name:
            NameFull: Hong, Wentao
      – PersonEntity:
          Name:
            NameFull: Zhao, Zihao
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          Dates:
            – D: 15
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 64
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              Value: 6
          Titles:
            – TitleFull: Geochemistry International
              Type: main
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