Eocene (50-48 Ma) zircon ages recorded in a Bukpyeong Basin conglomerate and its surrounding igneous rocks: A plate tectonic perspective

Q: What does this research mean for the field?

Zircon U-Pb dating reveals Eocene (50-48 Ma) igneous activity in the Bukpyeong Basin, suggesting it formed in a similar tectonic environment to the Pohang Basin and that this regional magmatism was likely driven by the subduction of the Izanagi-Pacific ridge. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Moonsup Cho; Yuyoung Lee; Jeongmin Kim; Wonseok Cheong; Tae-Kyung Hong

doi:10.14770/jgsk.2026.013

June 15, 2026Journal of the geological society of Korea

Eocene (50-48 Ma) zircon ages recorded in a Bukpyeong Basin conglomerate and its surrounding igneous rocks: A plate tectonic perspective

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Key Points

To provide insight into the basin's expansion and the development of terrestrial geology in Korea through U-Pb dating of zircon.
U-Pb dating of zircon from conglomerate and surrounding rocks in the Bukpyeong Basin
Analysis of ages including 49.1 ± 0.7 Ma and 48.7 ± 0.6 Ma from different samples
Comparison of ages with other volcanic and granitic rocks in East Asia.
Zircon ages of 49.1 ± 0.7 Ma and 48.7 ± 0.6 Ma indicate the timing of basin sedimentation.
The volcanic tuff and granite in the basin correlate with 48.2 ± 0.5 Ma and 48.6 ± 0.5 Ma ages, respectively.
Eocene volcanic activity in Korea contrasts with a magmatic gap seen in Japan and far eastern Russia.

Implication

Examines Eocene zircon ages in the Bukpyeong Basin, indicating tectonic implications.

Abstract

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Cite This Study

Cho et al. (2026) studied this question.

synapsesocial.com/papers/6a323e06d50b63ecad2076a2 https://doi.org/10.14770/jgsk.2026.013

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Eocene (50-48 Ma) zircon ages recorded in a Bukpyeong Basin conglomerate and its surrounding igneous rocks: A plate tectonic perspective

Key Points

Implication

Abstract

Discussion

Cite This Study

Eocene (50-48 Ma) zircon ages recorded in a Bukpyeong Basin conglomerate and its surrounding igneous rocks: A plate tectonic perspective

Key Points

Implication

Abstract

Discussion

Cite This Study

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