...Chang Oh Choo; Soo Jin Kim Abstract Kaolins from an Al-rich clay deposit formed in volcanic tuff, southeastern Korea contain predominant dickite and quartz with accessory diaspore, pyrophyllite, alunite, illite, sulfides and calcite. Intergrowth of blocky crystals with thin ones within stacks...

...C. O. Choo; Y. Kim Abstract Dumortierite occurs as small nodules or thin layers along horizontal fractures in the altered volcanic rocks of the Milyang clay deposit, southeastern Korea. Textural evidence shows that dumortierite is associated with pyrophyllite, suggesting that the silica activity...

[email protected] 01 04 2000 24 04 1999 © 2000 Mineralogical Association of Canada 2000 arsenopyrite geothermometry Fe–W skarn polymetallic fluid evolution fluid inclusions low sulfidation Ulsan southeastern Korea arsénopyrite géothermométrie skarn à Fe–W...

...Chang Oh Choo; Tae Woo Chang Abstract The Dongrae fault within the Yangsan fault system is considered one of the major faults in the southeastern part of Korea, extending over 150 km. The results of K-Ar radiogenic dating of fault gouges collected from six localities show a relatively wide range...

... and continental plates changed from highly oblique to orthogonal ( Engebretson et al. 1985 ). Continental-arc volcanism culminated during the Late Cretaceous, as is indicated by the widespread distribution of the Upper Cretaceous volcanic rocks in southeastern Korea and southwestern Japan ( Lee et al. 1987 ; Won...

.../Committee for Co-ordination of Joint Prospecting for Mineral Resources in Asian Offshore Areas Technical Bulletin 1974 8 39 54 Lee Y. J. Granitic rocks from the southern Gyeongsang Basin, southeastern Korea, part 1. General geology and K-Ar ages of granitic rocks Journal of the Japanese...

...Tae-Woong Chung; Haruo Sato Abstract The seismicity of the Yangsan fault in southeastern S. Korea has received increasing attention recently because the fault lies in an industrial area. For this fault region, we first measured \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage...

...Y. H. Kim; H. J. Lee; S. S. Chun; S. J. Han; S. K. Chough Abstract Gomso Bay, located on the western coast of Korea, has a mean tidal range of 4.3 m and is directly open to the Yellow Sea. Analysis of eighteen vibracores (in two transects) from extensive tidal flats on the south side of the bay...

...W. H. Ryang; S. K. Chough Abstract In a strike-slip setting, depositional history of marginal basins depends on the fault movements. In order to constrain controlling factors for the sequence changes of alluvial/lacustrine systems in the southeastern part of Cretaceous Eumsung Basin, a pull-apart...

...Seok Goo Song; Benchun Duan ABSTRACT The M L 5.8 earthquake that jolted Gyeongju in southeastern Korea in 2016 was the country’s largest inland event since instrumental seismic monitoring began in 1978. We developed dynamic rupture models of the Gyeongju event constrained by near‐source ground...

... , respectively. These values correspond to those of seismically stable regions and are slightly less dependent on frequency than those of southeastern Korea, due to high Q -1 values at high frequency. Further observations are required in central South Korea to evaluate the difference of Q -1 between central...

...‐northeast–west‐southwest compression, coincident with the tectonic stresses of southeastern Korea. Hypocenters, relocated by the double‐difference technique and dipping east‐southeast at ∼ 70 ° with depths of 11 and 16 km, followed the north‐northeast–south‐southwest strike of the moment tensor solution...

...Yong Il Lee; Hyoun Soo Lim Abstract The Sindong Group (Aptian–Albian), distributed in southeastern Korea, is a fluvio-lacustrine sequence deposited in the NE–SW-trending Nakdong Trough formed in an active continental margin. Sediments were derived from the Yeongnam Massif located west and NW...

...Figure 1. Jangsan caldera (southeastern Korea) and ring fault. A: Simplified geologic map of study area (marked by small rectangle). GB—Gyeongsang Basin. B: Ring fault zone between wall rock (dacite, DA) and rhyolitic intrusion. Layer of pseudotachylyte (PST) occurs along fault. Tuffisite (TF...

...Kwang‐Hee Kim; Jeongmu Kim; Minhui Han; Su Young Kang; Moon Son; Tae‐Seob Kang; Junkee Rhie; YoungHee Kim; Yongcheol Park; Han‐Joon Kim; Qingyu You; Tianyao Hao Abstract An M L 5.8 earthquake, which is large for a stable continental region, occurred in southeastern Korea on 12 September 2016. Ten...

...Hui Je Jo; Albert Chang-sik Cheong; Jong-Sik Ryu; Namhoon Kim; Keewook Yi; Haemyeong Jung; Xian-Hua Li Abstract Zircon oxygen-hafnium and biotite magnesium isotopic compositions of Late Cretaceous to Oligocene (88–27 Ma) granitoids from the Gyeongsang continental arc, southeastern Korea...

...Yong Il Lee; Joohhyeon Yi; Taejin Choi Abstract: The Sindong Group (Aptian–Albian) in southeastern Korea is a 2–3-km-thick fluvio-lacustrine sedimentary package deposited in an elongated basin (the Nakdong Trough), which was formed by extension in an active-continental-margin setting...

... the large section of Chinese mainland drained by the Yellow and Yangtze Rivers. The Fukien-Reinan massif (between southeastern Korea and the mouth of the Yangtze River) consists of Precambrian to Mesozoic rocks uplifted during the Mesozoic Era. It dams a thick sequence of Paleogene and Neogene sedimentary...