東南鑛山의 地質과 鑛床成因에 對한 硏究

徐正律,李在英 慶北大學校 自然科學大學 1983 自然科學論文集 Vol.2 No.-

This work deals with geology and ore deposits at the Dongnam mine. dongnam mine is located at 128°46'∼18°49'E, 37°16'∼37°18'N in Mureong-ri, Nam-myun, Jeongseon-gun, Gangweon-do, Korea. Geology of the mine consists of Cambrian slate(Myobong Formation), Ordovician limestone (Poongchon and Hwajeol Formation), Cretaceous (?) granitic intrusives, and Quaternary alluvium deposits. General trend of strike and dip of bedding plane in sedimentary rocks is N10°∼45°E, 5°∼30°SE, and joints in granitic intrusives strike NS-N30°E, dipping 70°∼80°NW. Main lineament of the study area shows a trend of NNE-SSW. Granitic intrusives, diorite and quarts porphyry, are classified depending on the predominent normative minerals and chemical compositions: diorite into diorite-tonalite-monzodiorite-granodiorite, and quartz porphyry into granite-quartz monzonite-granite. The petrochemical nature of source magma inferred from Niggli value is semi-femic, intermediate alkaline and c-normal for diorite, and salic, alkali-rich and c-poor for quartz porphyry. Sedimentary rocks were thermally metamorphosed by the granitici ntrusives to form mostly albiteepidote hornfels from pelitic Myobons slate and hornblende hornfels from Poongchon limestone. Contact metasomatic deposits of magnetite and hematite were formed in the country rocks in the border zone with the intrusives, hydrothermal Pb-Zn-Mn deposits along the fault shear zoneand a stockwork deposit of molybdenite in the diorite itself. The molybdenite deposit is thought to be formed in the early solidified margin by the residual mineralized solution of the intrusive itself. Molybdenite bearing skarn is plotted in the triangualr diagram of diopside-hedenbergite-johannsenite within the same compositional region as the copper-bearing skarn of general porphyry copper deposits. The wallrock alteration is potassic in diorite and propylitic in quartz porphyry. As shown in ACF and AKF triangular diagrams quartz porphyry belongs to epidote-chlorite-calcite and kaolinite-muscovite-chlorite facies. The sequence and stage of mineralization is: igneous intrusion→skarnization→Fe oxide→Fe sulphide→rhodochrosite→calcite→supergene enrichment of Mn oxide. The Dongnam mine has 4 types of ore deposite: contact metasomatic deposits at the border zone of limestone with the granitic intrusives, hydrothermal filling and replacement deposits along the fault shear zone, and disseminated hydrothermal stockwork deposit in the diorite itself. Main ore minerals are composed mainly of magnetite and hematite in the contact metasomatic deposits, and Mn carbonates, galena, sphalerite and molybdenite in the hydrothermal deposits. Mn oxides are enriched at surface by surpergene oxidation of primary Mn carbonates.

Spatial distribution of heavy metals in soils and groundwater at the 2000 Olympic Games site, Sydney, Australia

서정율 한국지하수토양환경학회 2004 지하수토양환경 Vol.9 No.1

The current study was undertaken to evaluate the hydrogeochemical implications of heavy metals (Cr, Cu, Pb, Zn) in both soils and groundwater in reclaimed lands of Sydney's 2000 Olympic Games site at Homebush Bay in Port Jackson, Sydney. The Olympic Games site can be divided into three areas, i.e. 'reclaimed areas' were previously estuarine, and were filled with waste materials and are now above present high tide level, whereas 'landfill areas' are areas where deposition of waste materials occurred above sea level. No deposition of waste took place in 'non-infilled areas'. 4513 soil core samples and 101 groundwater samples were analyzed for Cr, Cu, Pb, Zn. The mean heavy metal (Cr, Cu, Pb, Zn) concentrations in soils of the study area revealed the order of reclaimed (greatest), landfill and non-infilled area (smallest), whereas in groundwater it is all shown the order of landfill, reclaimed and non-infilled area, except for Pb. Mean Pb concentration in soils derived from the three land types at the Olympic Games site revealed the order of reclaimed area(174 mg/g), landfill area (102 mg/g) and non-infilled area (48 mg/g). Results reveal that soils contaminated by Cr, Cu, Pb and Zn in reclaimed/landfill areas are associated with dumped materials. No relationship could be established between soil and groundwater concentrations of heavy metals (Cr, Cu, Pb, Zn) in the landfill, reclaimed and non-infilled areas of the Olympic site, probably due to the varied nature of the materials deposited at the Olympic site. 본 연구는 시드니 포트젝슨(Port Jackson) 내 2000년 시드니올림픽사이트인 홈부시베이(Homebush Bay)를 대상으로 다양한 폐기물의 매립으로 인한 토양 및 지하수 내 중금속 원소들의 농도를 평가하기 위하여 수행되었다. 올림픽게임지역을 3개의 지역, 즉 간척지역(과거에는 강하구였으나 폐기물로 매립되어 있으며 현재는 조수간만 보다 높은 지역), 매립지역(해수면 위에 폐기물을 매립한 지역), 및 자연 상태지역(폐기물의 매립이 전혀 없었던 지역))으로 나누어 조사하였다. 토양코어시료(n=4513) 및 지하수 샘플(n=101) 내 중금속(Cr, Cu, Pb, Zn)을 분석하였다. 본 연구지역의 토양 내 중금속(Cr, Cu, Pb, Zn)의 농도는 간척지역, 매립지역 그리고 자연 상태지역의 순으로 높게 나타났지만 지하수내에서는 납(Pb)을 제외하고 매립지역, 간척지역 그리고 자연 상태지역순으로 나타났다. 올림픽게임사이트 토양 내 평균 납(Pb)의 농도는 간척지역(174 mg/g), 매립지역(102 mg/g) 그리고 자연상태지역(48 mg/g)의 순으로 나타났으며 그 결과 본 연구지역 토양내 중금속의 분산은 농집된 중금속 농도와 매립된 폐기물의 존재와 밀접한 관련이 있음을 나타냈다. 그러나 올림픽 사이트 내 이질적인 폐기물의 매립으로 인하여 토양과 지하수 내 중금속농도의 상관관계를 규명할 수는 없었다.

자랑스런 공무원수기 ( 지방행정 제 26 권 , 제 279 호 )

서정율 대한지방행정공제회 1977 地方行政 Vol.26 No.279

대구시 일대의 수질오염에 관한 지화학적 고찰

서정율,이재영 대한지질학회 1991 대한지질학회 학술대회 Vol.1991 No.

해안가 매립으로 인한 지하수의 수리화학적 특성

서정율 ( Jeong Yul Suh ) 대한지질공학회 2004 지질공학 Vol.14 No.1

Parameters of Glucose and Lipid Metabolism Affect the Occurrence of Colorectal Adenomas Detected by Surveillance Colonoscopies

김남희,정윤숙,서정율,박정호,박동일,조용균,손정일,최규용 연세대학교의과대학 2017 Yonsei medical journal Vol.58 No.2

Purpose: Limited data are available regarding the associations between parameters of glucose and lipid metabolism and the occurrenceof metachronous adenomas. We investigated whether these parameters affect the occurrence of adenomas detected on surveillance colonoscopy. Materials and Methods: This longitudinal study was performed on 5289 subjects who underwent follow-up colonoscopy between 2012 and 2013 among 62171 asymptomatic subjects who underwent an initial colonoscopy for a health check-up between 2010 and 2011. The risk of adenoma occurrence was assessed using Cox proportional hazards modeling. Results: The mean interval between the initial and follow-up colonoscopy was 2.2±0.6 years. The occurrence of adenomas detected by the follow-up colonoscopy increased linearly with the increasing quartiles of fasting glucose, hemoglobin A1c (HbA1c), insulin, homeostasis model assessment of insulin resistance (HOMA-IR), and triglycerides measured at the initial colonoscopy. These associationspersisted after adjusting for confounding factors. The adjusted hazard ratios for adenoma occurrence comparing the fourth with the first quartiles of fasting glucose, HbA1c, insulin, HOMA-IR, and triglycerides were 1.50 [95% confidence interval (CI), 1.26–1.77; ptrend<0.001], 1.22 (95% CI, 1.04–1.43; ptrend=0.024), 1.22 (95% CI, 1.02–1.46; ptrend=0.046), 1.36 (95% CI, 1.14–1.63; ptrend=0.004), and 1.19 (95% CI, 0.99–1.42; ptrend=0.041), respectively. In addition, increasing quartiles of low-density lipoprotein-cholesterol and apolipoproteinB were associated with an increasing occurrence of adenomas. Conclusion: The levels of parameters of glucose and lipid metabolism were significantly associated with the occurrence of adenomasdetected on surveillance colonoscopy. Improving the parameters of glucose and lipid metabolism through lifestyle changes or medications may be helpful in preventing metachronous adenomas.

대구시 지하수 수질에 미치는 지질학적 환경의 영향에 대한 연구

이재영,이인호,고인석,이진국,서정율 경북대학교 환경과학연구소 1992 環境科學硏究所論文集 Vol.6 No.1

대구시 지하수의 금속 오염에 대한 지화학적 연구

이재영 ( Jae Yeong Lee ),김영기 ( Young Ki Kim ),이진국 ( Jin Kook Lee ),서정율 ( Jeong Yul Suh ) 대한지질공학회 1992 지질공학 Vol.2 No.2