A5018893740- Geological and Geochemical Analysis
- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Geological formations and processes
- Geochemistry and Elemental Analysis
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Geological and Geophysical Studies
- Geological Modeling and Analysis
- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Radioactive element chemistry and processing
- High-pressure geophysics and materials
- Isotope Analysis in Ecology
- Hydraulic Fracturing and Reservoir Analysis
- Paleontology and Evolutionary Biology
- Polar Research and Ecology
- Clay minerals and soil interactions
- Ecology and Conservation Studies
- Marine and Coastal Research
- Evolution and Paleontology Studies
- Groundwater and Isotope Geochemistry
- Geochemistry and Geochronology of Asian Mineral Deposits
- Pleistocene-Era Hominins and Archaeology
University of Ulsan
2024-2025
Ulsan College
2024-2025
Asan Medical Center
2024-2025
Seoul National University
2014-2024
Korea Polar Research Institute
2019
University of Illinois Urbana-Champaign
2003
Soonchunhyang University Hospital
1999
Dong-A University
1998
Korea Advanced Institute of Science and Technology
1996
Abstract The provenance of sands from the Manzanillo (MN) and El Carrizal (CAR) beach areas along Mexican Pacific coast (southern Mexico) was investigated based on their modal composition, mineralogy geochemical data. average quartz, feldspar lithic fragment (QFL) ratios revealed that proportion quartz is higher in CAR than MN sands. In comparison with MN, are enriched SiO 2 content /Al O 3 ratio indicating sediment recycling greatest for variation K O/Al Na O/K between specified a...
The weathering conditions, provenance, and tectonic setting of sands from the San Nicolás (SN) Carlos (SC) beaches along Gulf California, Mexico, have been studied using mineralogy, major element, trace element data. compositional similarity among 4 independent groups (each beach area consists 2 grain-size groups, i.e. medium- fine-grained sands) was tested statistically by application analysis variance at 99% confidence level to avoid misinterpretation. X-ray diffraction SEM-EDS data...
Abstract The Sindong Group forms the lowermost basin‐fill of Gyeongsang Basin, largest Cretaceous nonmarine basin located in southeastern Korea, and comprises Nakdong, Hasandong, Jinju Formations with decreasing age. depositional age has not yet been determined well reported ranges from Valanginian to Albian. Detrital zircons have subjected U–Pb dating using laser ablation inductively coupled plasma mass spectrometry. contains noticeable amounts detrital magmatic (138–106 Ma), indicative...
ABSTRACT The Dumugol Formation (Lower Ordovician) in the southern part of Baegunsan syncline, South Korea, contains mixed siliciclastic and carbonate ramp deposits. sediments were frequently influenced by storm events resulting tempestites sandstone‐mudstone couplets, bioclastic grainstones to packstones, flat‐pebble conglomerates, a skeletal lag layer laminated calcisiltites. All are characterized an erosive sharp base, poor grading transitional upper boundary. difference lithology appears...
ABSTRACT A 5.88‐m‐long core taken from Lake Ulaan was studied for high‐resolution paleoclimatic changes during the last 17 000 years. The sediments are divided into three units based on grain‐size distribution: unit 1 (top to 392 cm depth, covering 11 200 years), 2 (392–530 cm, 11.2–15 ka) and 3 (530–588 15.0–16.7 ka). These were transported by local westerly winds (units 3) fluvial processes (unit 2). Based major element compositions geological setting of adjacent areas, provenance...
Major, trace, and rare earth element (REE) studies have been conducted on the Proterozoic clastic rocks of Kerur Formation Kaladgi-Badami Basin, South India, to determine their paleoweathering conditions provenance characteristics. Geochemically, these sedimentary are classified as quartz arenite, arkose, litharenite, sublitharenite. The chemical index alteration values A-CN-K diagram suggest that clastics in this study underwent moderate intensive weathering. Chondrite-normalized REE...
Abstract Dust transport to the tropical/subtropical northwestern Pacific over past 600 kyr was investigated using radiogenic isotopes ( 87 Sr/ 86 Sr and ε Nd ), together with clay mineral composition, of eolian dust preserved in a sediment core obtained from Philippine Sea (12°30′N, 134°60′E). These data revealed influence two prevailing sources, namely, Asian deserts nearby volcanic arcs (e.g., Luzon Arc), average contributions around 70% 30%, respectively, each. The composition resembled...
Concentrations of major, trace, and rare-earth elements (REE) were measured in shallow marine limestone samples the upper Miocene Kudankulam Formation, southern India, order to investigate geochemical variations among various litho-units. The CaCO3 content is higher algal (AL; 92 ± 1, n = 3) clastic (CL; 90 2, than sandy shell (SSL; 81 3). All trace exhibit lower concentrations post-Archean Australian Shale (PAAS) values, except one SSL sample. Large ΣREE are observed CL, SSL, AL (~14-142,...
Abstract Thermal histories of Cretaceous sedimentary basins in the Korean peninsula have been assessed to understand response East Asian continental margin subduction Paleo‐Pacific (Izanagi) Plate. The Izanagi Plate subducted obliquely beneath continent during Early and orthogonally Late Cretaceous. First, Jinan Basin, a pull‐apart basin, was studied by illite crystallinity apatite fission‐track analyses. Analytical results indicate that Basin sediment heated maximum temperature...