Complex Multipatch Rupture and Aftershock Characteristics of the 2024 Mw 4.2 Buan, Korea, Earthquake Sequence
Abstract Moderate-magnitude earthquakes in stable continental regions (SCRs) can pose significant hazards, yet their rupture processes remain poorly understood due to sparse instrumentation and their infrequent occurrence. The 2024 Mw 4.2 Buan, Korea, earthquake, and its aftershock sequence were exceptionally well recorded by a local seismic network, providing a rare opportunity to investigate the rupture process […]
Metasomatized lithospheric mantle as a reservoir for recycled volatiles: Noble gas and oxygen isotope systematics in the East Sea
Volatiles recycled via subduction can be partly stored within the sub-arc lithosphere, forming long-lived geochemical reservoirs. Northeast (NE) Asia possesses a unique geological context in which the subduction of the Pacific plate has profoundly influenced tectonic and magmatic processes, providing an opportunity to investigate the records of subducted components preserved within the metasomatized sub-continental lithospheric […]
Emissions of mantle helium and abiotic methane at newly discovered black smokers along the Central Indian Ridge (12˚S-16˚ S)
Volatiles emitted from black smokers provide crucial insights into mantle and hydrothermal processes. This study investigated the Cheoeum (CVF) and MIRAE-2 (M2VF) vent fields in the 12-16°S region of the Central Indian Ridge (CIR) using RV ISABU and ROV ROPOS. We measured 3He/4He, 4He/20Ne, CH4 concentration, δ13C of CH4, and 222Rn activity in 78 seawater […]
SRC 가을학기 특강(2025.12.08)
수업일시: 매주 월요일 10시-13시 장소: 25-1동 304호 담당교수: 이현우
Gravel bar shielding: A mechanism responsible for bar stabilityin gravel- and cobble-bedded streams
The stability of gravel bars and riverbanks is often attributed to the presence of vegetation, yet the conditions controlling the stability of such bars without of a vegetation cover have remained unclear. Here, we propose that such controls are exerted by what we refer to as ‘lateral lag deposits’, which result from the winnowing of […]
Seismic properties of lawsonite blueschist in cold subduction zones
Anomalous seismic low-velocity layers (LVLs) have been observed at the top of subducting slabs in cold subduction zones. However, their origins remain unclear. Here, based on experimentally derived crystal preferred orientation (CPO) data of lawsonite blueschists, we demonstrate that the LVLs can be caused by the alignment of glaucophane and lawsonite. The data were obtained […]
SRC 가을학기 특강(2025.11.24)
수업일시: 매주 월요일 10시-13시 장소: 25-1동 304호 담당교수: 이현우
[2025 KGS] 중앙인도양해령 온누리 열수 시스템의 심부 기반암 구조 및 성분과 열수 유체 성분 간의 연관성 규명
– 제목: 중앙인도양해령 온누리 열수 시스템의 심부 기반암 구조 및 성분과 열수 유체 성분 간의 연관성 규명 – 저자: 최사랑, 박정우, 임성환, 김종욱, 최선기, 문인경, David A. Butterfield, Tamara Baumberger, 박준용 – 공식학회명: 2025 추계지질과학연합학술대회 – 개최국/장소: 대한민국/제주 – 발표일자: 2025/10/29 – 발표타입: 구두 발표 – 초록: 심부 시료 채취의 어려움과 한계로 인해, 고온(>200°C) 초고철질 기반 열수 시스템(HT-UHS)의 […]
[2025 KGS] 마그마 공급이 제한적인 중앙 인도양 해령 감람석 내 멜트 포유물이 보여주는 두가지 맨틀 플룸 성분
– 제목(Title): 마그마 공급이 제한적인 중앙 인도양 해령 감람석 내 멜트 포유물이 보여주는 두가지 맨틀 플룸 성분 – 저자(Authors): 임성환, 박정우, 최사랑, 김종욱, Andrey A. Gurenko, 최성준 – 공식학회명(Conference Name): 2025 추계지질과학연합학술대회 – 개최국/장소(Country/Location): 대한민국/제주 – 발표일자(Presentation Date): 2025/10/29 – 발표타입(Presentation Type): 구두 발표 – 초록(Abstract): 중앙 인도양 해령의 마그마 활동은 아프리카 거대저속도영역(LLSVP)으로부터 기원한 레위니옹 플룸과 마스카린 […]
Comparative PGE geochemistry of lithospheric mantle-derived magmas: Implications for Cu-Au fertility in the Korean Peninsula
– 제목(Title): Comparative PGE geochemistry of lithospheric mantle-derived magmas: Implications for Cu-Au fertility in the Korean Peninsula – 저자(Authors): Lisa Monique Heyroth, Jung-Woo Park, Gyuchan Park, Sunghwan Im, Ji-In Ree – 공식학회명(Conference Name): 2025 KGS – 개최국/장소(Country/Location): South Korea, Jeju Island – 발표일자(Presentation Date): 30.10.2025 – 발표타입(Presentation Type): Poster presentation – 초록(Abstract): Potassic magmas derived from […]
