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RISS 인기검색어
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- 저자 : 리륜종 ( Yoon Jong Lee ) (검색결과 3 건)
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Yoon Jong Lee(李倫鐘) 대한자원환경지질학회 1980 자원환경지질 Vol.13 No.2
Granitic rocks, from the Eonyang and the northwestern part of Ulsan area, were mainly studied from the petrochemical point of view. From field work, microscopic observation and the result of K-Ar ages, these granitic rocks are divided into six rock types of a, b, c, d, e and e’, of which modal composition are given. Type a, c, e and e’ are mainly granodiorite, type b is adamellite, and type d is granodiorite, adamellite and others (porphyritic rock, porphyry and felsitic rocks). Bulk chemical analyses of 22 samples of the granitic rocks are given. The petrographical and petrochemical characteristics of these rocks are discussed briefly. In the petrochemical compositions with their characteristic variation trends of several oxides and norm Or-Ab-An triangular diagram, type a, b and c show some similarity to that of San-yo granite of Japan and younger granite of Ogcheon geosynclinal zone, and then, type e and e’, to San-in granite of Japan. But, some of granitic rock samples of type d are similar to San-yo granite and the others of type d to San-in granite because this type is composed of porphyritic rock, porphyry and felsitic rocks. According to the result of K-Ar ages (1976, Lee et al.) of rock samples from type a, b and care Cretaceous, on the otherwise, type d, e and e’, are Tertiary granitic rocks. Judging from these evidences, granitic rocks in the area are correlated to the Cretaceous and Tertiary granitic rocks in the, southwestern Japan, that is, type a, band c are correlated to San-yo granite, and type d, e and e’ to San-in granite.
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광산광산부근(廣山鑛山附近)의 지질(地?)과 광화작용(鑛化作用)에 對하여
정원우 ( Won Woo Chung ),리륜종 ( Yoon Jong Lee ) 경북대학교 과학교육연구소 1981 科學敎育硏究誌 Vol.5 No.-
The geology and mineralization of Gyeongsan mine and its vicinity were studied mainly f-rom petrochemical and geochemical point of view. The mineral composition of ores and the content varations of trace elements in carbonate veins wers investigated in relation to the origin of ore deposits. From field observation, microscopic study and chemical analysis of major and trace elem-ents it may be summarized and concluded as followings: 1) Mineralization is assumed to have been formed from carbonate-rich hydrothermal so-lution passing through the fissures developed in the granitic rocks. The major strike and dip of the fissures are NS to N10°E and nearly vertical. 2) The characyeristic variation trends of several oxides of bulk chemical analysis and modal analysis of the granitic rocks indicate that the rocks belong to adamellite to granite and have some similarity to the granite of G group in southern Gyeongsang basin and the younger granite of Ogcheon geosynclial zone. Ore minerals in the carbonate vein are mainly arsenopyrite, molybdenite, pyrite and sphalerite. Sphalerite associates occasionaly with small amounts of bismuthinite and chal-copyr te. Gangue minerals found in this ore deposits compsed of calcite, dolomite, anker-ite, quartz, K-feldspar etc. 4) The distribution pattern of trace elements show that Co content is mostly low and tends to decrease, like Cu and As, With depth, and that Mo content is high in drill holes of No. 5 to 7 and rends to increase with depth. It seems that the variation trends of Co fairly show similarity with As and Cu, but dissmilarity with Mo and the others. 5) The raw ores of the past might be cobalt-bearing arsenopyrite, that was much enri-ched in Co, considering the ratio of Fe/Co based on the past analytical results of arsen-opyrite.
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밀양광산(蜜陽鑛山)의 열수광상(熱水鑛床)에 대(對)한 광물학적(鑛物學的) 연구(硏究)
정원우 ( Chung Won Woo ),상기남 ( Sang Ki Nam ),리륜종 ( Yoon Jong Lee ) 경북대학교 과학교육연구소 1994 科學敎育硏究誌 Vol.18 No.-
Miryang clay deposits located in Miryang-gun, Kyeongsangnam-do, Korea, belong to the ka-olin-pyrophyllite deposits related to the late Creataceous volcanic rocks. The mode of occur-rence of the kaolin-pyrophyllite deposits and the genetic relation to the volcanism were studied in the Miryang area. This area is underlained by rhyolitic welded tuff in the ascending order which are strongly altered. The rhyolite is intruding to various tuff beds which are distributed in the southeastern part of kaolin-pyrophyllite deposits. The altered rocks in the rhyolitic welded tuff can he classified into the following zones; silicified zone, pyrophyllite zone, weakly argillite zone and weakly altered zone in the order from ore shoots. The clay deposits occur as irregular massive and layer types 5 -30m in width and is accompanied by thin diaspore bed and is at outer of ore shoot Pyrophyllite ores consist mainly pyrophyllite, kaolinite, muscovite, quartz with acessory minerals, like diaspore, alunite, dumortierite, chlorite, muscovite, sericite, pyrite and mixed layer minerals. The process of kaolinization-pyrophyllitization has a close relation to a local acidic solution by acidic grantic rocks. Acid hydrothermal alteration mainly in the rhyo-litic welded tuff. It is reasonably considered that initial gas and solution containing H2S and oth-ers were oxidized near the surface and formed hydrothermal sulfuric acid solution.
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