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Zircon geochronology, Hf isotope, and rare earth element geochemistry of the Apdong Nb-Ta deposit in North Korea by Namhoon Kim; Bum Han Lee; Sang-Mo Koh; Ho-Sun Lee; Byung-Dal So is a Earth and Planetary Sciences article available to read on EtoBox.

What is Zircon geochronology, Hf isotope, and rare earth element geochemistry of the Apdong Nb-Ta deposit in North Korea about?

The Apdong Nb-Ta deposit is hosted within the syenite and in the Hoamsan area in the northern part of the Imjingang Belt in North Korea. Our new sensitive high-resolution microprobe zircon U-Pb results reveal two stages of Neoproterozoic to Ordovician inherited cores (887 Ma to 465 Ma) and Silurian emplacement and mineralization (425.5 ± 7.4 Ma) events. The zircon grains from the Apdong syenite show typical magmatic or textureless and sponge-like hydrothermal domains. These textural analyses supported the rare earth element characteristics obtained from the laser ablation-induced coupled plasma mass-spectrometry analyses (LA-ICP-MS). Neoproterozoic magmatic activities reportedly occur in the Pyeongnam Basin, Imjingang Belt [present study], Gyeonggi Massif, and Okcheon metamorphic belt in the central part of the Korean Peninsula and China (North China Craton, Qinling Orogenic Belt, and South China Craton). Notably, the Caledonian mineralization events in the southeastern part of the South China Craton coincided with emplacement and mineralization ages from the Apdong syenite (425.5 ± 7.4 Ma). The LA multi-collector ICP-MS Hf isotope of zircons from the Apdong syenite yielded positiv

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Author

Namhoon Kim; Bum Han Lee; Sang-Mo Koh; Ho-Sun Lee; Byung-Dal So

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)