کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5785439 1640124 2017 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nature of Late Mesoproterozoic to Early Neoproterozoic magmatism in the western Gyeonggi massif, Korean Peninsula and its tectonic significance
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
پیش نمایش صفحه اول مقاله
Nature of Late Mesoproterozoic to Early Neoproterozoic magmatism in the western Gyeonggi massif, Korean Peninsula and its tectonic significance
چکیده انگلیسی


- Late Mesoproterozoic to Middle Neoproterozoic arc magmatism in the western Gyeonggi massif, Korean Peninsula
- Late Mesoproterozoic to Middle Neoproterozoic metaplutons display the evolution of the Rodinia supercontinent
- Late Mesoproterozoic to Middle Neoproterozoic metaplutons provide the convergence process along the margins of the supercontinent

The western margin of the Gyeonggi massif, southern Korean Peninsula, has preserved N-S trending Neoproterozoic and sporadic Late Mesoproterozoic metaigneous rocks. Here we present the results from systematic field mapping, sensitive high-resolution ion microprobe (SHRIMP) zircon U-Pb dating, and whole-rock geochemical analyses of the Mesoproterozoic and Early Neoproterozoic metaplutonic rocks in the Hongseong area, together with previously published data from the western Gyeonggi massif. The SHRIMP ages of these rocks are categorized into three groups: (1) Late Mesoproterozoic (ca. 1.25-1.15 Ga), (2) Early Neoproterozoic (ca. 900-770 Ma), and (3) late Early Neoproterozoic (ca. 762-730 Ma). The geochronological and geochemical features of the Late Mesoproterozoic rocks suggest that they were possibly formed in association with convergent plate motion. The Early and late Early Neoproterozoic rocks are interpreted to arc-related orogenic and rift-related post-orogenic environments, respectively. These age results and the tectonic signatures provide insight into the convergence process along the margins of the Rodinia supercontinent.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gondwana Research - Volume 47, July 2017, Pages 291-307
نویسندگان
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