Upper mantle scale enrichment of Cenozoic intraplate magmatism in Northeast Asia: He-Sr-Nd-Pb-O isotope geochemistry of the basalts around the Korean peninsula

The Earth's mantle is considered to be geochemically heterogeneous, which is reflected by the diverse composition of oceanic island basalts (OIB). The mantle enrichment resulting in this is attributed primarily to the influx of recycled crustal materials into the mantle through subduction. Additionally, the sub-continental lithospheric mantle (SCLM) complicates the elucidation of mantle heterogeneity. From […]

[2024 IGC] Lithium isotope evidence for enhanced weathering during the Middle Ordovician

– 제목(Title): Lithium isotope evidence for enhanced weathering during the Middle Ordovician – 저자(Authors): Jena Jeong, David J. Wilson, Youngsook Huh – 공식학회명(Conference Name): The 37th International Geological Congress 2024 – 개최국/장소(Country/Location): Korea, Busan Bexco – 발표일자(Presentation Date): 8/29 – 발표타입(Presentation Type): Poster – 초록(Abstract):  The Ordovician period is known for substantial environmental changes within the […]

Reconstructing CO2 uptake capacity and pH dynamics in the Middle Ordovician Taebaeksan Basin, Korea

This study presents the first continuous carbonate boron isotope (δ11Bcarb) record from Middle Ordovician carbonate rocks, focusing on the Taebaek section in Korea. The δ11Bcarb values analyzed from the Makgol, Jigunsan, and Duwibong formations range between 7.5 ‰ and 17.8 ‰, falling within the published Paleozoic range. Samples exhibit minimal diagenetic alteration, as evidenced by […]

Leveraging Physics-Based Models with Rate-and-State Friction to Better Understand Seismological Recordings of Natural and Induced Earthquakes

1. 제목: Leveraging Physics-Based Models with Rate-and-State Friction to Better Understand Seismological Recordings of Natural and Induced Earthquakes 2. 연사: Taeho Kim 3. 소속: California Institute of Technology 4. 일시: 2024-10-15 (화) 오전 11:00 5. 장소: 자연과학대학 24동 103호 6. 문의: 25-1동 504호 지구물리연구실 (tel. 02-885-6130)

[2024 Goldschmidt] The impact of groundwater flow characteristics on radionuclide mobilization in natural analogue study sites of South Korea using environmental tracers (age tracers and noble gas)

– 제목(Title): The impact of groundwater flow characteristics on radionuclide mobilization in natural analogue study sites of South Korea using environmental tracers (age tracers and noble gas) – 저자(Authors): Ye Ji Kim, Jaeyeon Kim, Kang-Kun Lee – 공식학회명(Conference Name): Goldschmidt Conference – 개최국/장소(Country/Location): Chicago, USA – 발표일자(Presentation Date): 24/08/20 – 발표타입(Presentation Type): poster – 초록(Abstract): […]

Coupling of radon and microbial analysis for dense non-aqueous-phase liquid tracing and health risk assessment in groundwater under seasonal variations

Dense non-aqueous-phase liquids (DNAPLs) represent one of the most hazardous contaminants of groundwater, posing health risks to humans. Radon is generally used to trace DNAPLs; however, external factors, such as rainfall or stream water, can influence its efficacy. To overcome these limitations, this study pioneered the integration of radon and microbial community structures to explore […]

[2024 IGC] Preliminary results of the deformation texture of diopside in serpentinite

    – 제목(Title): Preliminary results of the deformation texture of diopside in serpentinite – 저자(Authors): Jungjin Lee and Haemyeong Jung – 공식학회명(Conference Name): The 37th International Geological Congress 2024 – 개최국/장소(Country/Location): 대한민국/부산 – 발표일자(Presentation Date): 2024/08/29 – 발표타입(Presentation Type): 구두 발표    Seismic anisotropy has been ubiquitously observed in worldwide subduction zones, and the strong crystallographic preferred orientation […]

[2024 IGC] Deformation fabrics of talc and chloritoid and implications for seismic anisotropy in subduction zones

  – 제목(Title): Deformation fabrics of talc and chloritoid and implications for seismic anisotropy in subduction zones – 저자(Authors): Jungjin Lee and Haemyeong Jung – 공식학회명(Conference Name): The 37th International Geological Congress 2024 – 개최국/장소(Country/Location): 대한민국/부산 – 발표일자(Presentation Date): 2024/08/27 – 발표타입(Presentation Type): 포스터 발표  Talc and chloritoid are common metamorphic minerals observed in mafic-ultramafic rocks and/or high-pressure […]