• Economic and Environmental Geology
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• v.48 no.1
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• pp.77-88
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• 2015

Advanced geological surveys and exploration activities were first carried out in Korea in 1884 in accordance with a treaty of friendship and commerce between Great Britain and Korea and a treaty of friendship and commerce between Germany and Korea. The first paper by Gottsche, C. was also published in a German Journal in 1886. Efforts toward independent acquisition of Western geological survey and exploration technology were actively promoted by the Korean Empire in the early 1900s, but were frustrated by the Japanese Empire. Systematic geological surveys and exploration were conducted in Korea by Japanese geologists during the Japanese occupation. A basic geological maps(61sheets), a bulletin on the geological survey of Korea, a bulletin and technical report on deposits in Korea, and a coalfield geological survey report were published during this period. Overall, the intentions under lying the geological surveys and exploration activities by foreigners in Korea prior to the Japanese occupation were questionable. However, the results of these surveys and explorations themselves can be evaluated as positive in terms of academic performance.

• Economic and Environmental Geology
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• v.3 no.1
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• pp.35-47
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• 1970

• Economic and Environmental Geology
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• v.56 no.5
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• pp.565-580
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• 2023

In this study, we reviewed and summarized comprehensive roles and importance of natural analogue studies for demonstrating the safety and improving the reliability of the safety for the deep geological disposal of high-level radioactive waste. We also investigated domestic and foreign status of natural analogue studies in order to study and substantiate complex and various radionuclide behaviors in subsurface disposal environments. In addition, we investigated and uranium behaviors in groundwater and rock in uranium deposits including domestic uranium deposits in Ogcheon Metamorphic Belt and biogeochemical interactions in geological environments. Although there are many limitations and uncertainties in directly using the information and data for uranium behaviors obtained from uranium deposits in the disposal safety assessment, the information and data can be utilized in the disposal safety assessment and safety case construction both in qualitative and partly quantitative ways.

• Journal of the Mineralogical Society of Korea
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• v.25 no.1
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• pp.41-50
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• 2012

페루 남동부 지역에 위치한 꾸스코 동-금을 포함한 다중금속 광상 지역의 지질은 고생대 페름기-중생대 삼첩기 변성퇴적암인 미투(Mitu)층군과 이를 관입한 동시기 관입암으로 구성되어 있다. 조사지역은 페름기-삼첩기 관입암과 관련된 U-W-Sn-Mo, Au-Cu-Pb-Zn, REE 광화작용과 관련된 금속광화 대로 알려져 있다. 특히 해당 관입암은 대자율 측정 결과 S-type, 티탄철석계열과 관련이 있는 것으로 보인다. 꾸스코 지역은 깔까 북쪽과 시꾸아니 부근에 주요 광화대가 발달하고 있다. 조사대상 광상은 아줄 동, 올미오 동, 빅토리아 금, 빠딴자 동, 나우챠피-초차까나 동, 체카 금광상이다. 아줄 광상의 모암은 안산암질암이며 광석광물로는 반동석 및 황동석이 산출하며, 동은 7.81~15.3%의 범위를 가지고 평균 10.7%이다. 올미오 광상의 모암은 흑색편암이며 엽리를 따라 산화동이 충진되어 있고, 동은 0.61~2.60%의 범위를 가지고 평균 1.74%이다. 빅토리아 광상의 모암은 변성퇴적암이며, 석영맥 충진형 광상으로 금함량은 < 0.1 g/t, 은함량은 < 0.1~< 0.3 g/t이다. 빠딴자 광상에서는 이암 또는 실트암의 층리를 따라 충진하고 있는 산화동이 산출하며, 동은 3.74~9.21%의 범위를 보이며 평균 6.21%이다. 나우챠피-초차까나 광상은 적색사암의 층리를 교대충진하고 있는 산화동 광체이며, 동은 1.62~10.5%의 범위를 가지며 평균 6.39%이다. 체카 광상은 모암인 규암이 각력화작용을 받은 부분에서 금이 산출되고 있는 것으로 보고되어있으나 분석결과 금이 탐지되지는 않았다.

• Economic and Environmental Geology
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• v.19 no.spc
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• pp.73-94
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• 1986

In order to make preparation of the Metallogenic Map of Korea, the writer have to collect and review the data of general geology and ore deposits of Korea which have been published up to date. The geology of Korea has been briefly simplified and grouped into the 15 formations so as to provide the base geologic map for making the Metallogenic Map of Korea. Geologic provinces of south Korea are divided into four, that is, Gyeonggi·Ryeongnam province, Ogcheon geosynclinal province, Gyeongsang basin province and Tertiary province. In the view of tectonics and related granites, the major orogenies in south Korea are as follows; Ryeongnam orogeny, Taebaeg disturbance, post-Sangweon disturbance, post-Joseon disturbance, Bulgugsa disturbance and Yeonil disturbance. Metallogenic epochs might coincide with the period of syntectonic or subsequent igneous rock intrusions accompanied with the above listed orogenies and disturbances. Thus, metallogenic epochs that are certain in Korea so far are; Precambrian periods, Paleozoic periods, Jurassic to early Cretaceous periods, late Cretaceous to early Tertiary periods, Quaternary periods and age-unknown periods. The Metallogenic Map of Korea shows 444 ore deposits and/or mines by symbols on a background adopted from the existing geologic and tectonic map. The 444 metallic and non-metallic deposits are categorized by the commodities they contain, size, geologic environment, mineralized age and mineralogic nature.

• Economic and Environmental Geology
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• v.47 no.4
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• pp.351-362
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• 2014

In order to grasp the geological characteristics, the occurrence mode of ore body and development potential of Bophi Vum chromite mineralized zone in northwestern Myanmar, Korea Institute of Geoscience and Mineral Resources(KIGAM) and Department of Geological Survey and Mineral Exploration(DGSE) carried out joint exploration targeting on the $6km^2$ areas within the mineralized zone. Chromitites occur as a major Cr-ore body in the Bophi Vum area, and are enveloped by dunitic peridotites. As a result of geological survey, the geological map of Bophi Vum was drawn in the scale of 1:1,000, and we discovered that the chromitite ores are mainly distributed at the elevation range between 200 and 400 m. The soil geochemistry was conducted by collecting total 114 soil samples in the interval of 50 m after pitting ground surface under 0.7-1 m. Geochemical anomaly maps of Cr, Ni, Fe, and Mn were prepared by ICP-AES.

• Economic and Environmental Geology
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• v.47 no.3
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• pp.303-316
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• 2014

This study was carried out to raise research productivity through the analysis on the research projects and to find trends of mineral resources survey and mineral deposits of the KIGAM for 38 years since the fiscal year of 1976 to 2013. The KIGAM in the projects for mineral resources survey and mineral deposits expended 67.41 billion won for last 38 years, which is 107.07 billion won calculated using the present value in 2013 at discount rate of 5%. R&D expenditure in mineral resources survey and mineral deposits of KIGAM increased approximately 59.4 times from 108 million won in 1976 to 6,420 million won in 2013, and about 9.8 times from 657 million won in 1976, as calculated using the present value in 2013. The percentage of research projects in mineral resources survey by research sub-areas was as follows: survey, 32%(90 projects); origin of ore deposits and basic research, 19%(54 projects); exploration for ore deposits, 17%(48 projects); database and information, 13%(37 projects); mineralogy and ore analysis, 9%(25 projects); and etc., 10%(27 projects). Based on analysis of research trends over the last 38 years, to raise research productivity, the existing survey research techniques with repeated use and related technology development should be enhanced.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2003.04a
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• pp.187-190
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• 2003

태백산 광화대는 1960년대부터 광물자원에 대한 조사 및 개발이 활발하게 이루어지고 있는 지역으로 지질관련 자료들이 많이 축적되어 있으므로 자료의 이용이 용이하고 예측 모델링을 적용한 결과와 기존 결과의 비교가 가능한 지역이다. 본 연구에서는 태백산 광화대 지역의 금속광상의 부존가능지역 예측을 위하여 지화학 자료를 이용하여 주제도를 작성하였다. 부존가능지역 예측을 위하여 사용한 기법은 GIS 기반의 예측 기법 중하나인 Weights of Evidence 모델링 기법으로 연구지역에 시범 적용함으로써 국내 환경에의 적용 가능성을 검토하고 구조선과 광상간의 공간적 상관성을 확인하였다.

• Geophysics and Geophysical Exploration
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• v.23 no.3
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• pp.149-156
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• 2020

The genesis of ore bodies is a very diverse and complex process, and the target depth of mineral exploration increases. These create a need for predictive mineral exploration, which may be facilitated by the advancement of machine learning and geological database. In this study, we confirm that the faults and igneous rocks distributions and magnetic data can be used as input data for potential mapping using deep neural networks. When the input data are constructed with faults, igneous rocks, and magnetic data, we can build a potential mapping model of the metal deposit that has a predictive accuracy greater than 0.9. If detailed geological and geophysical data are obtained, this approach can be applied to the potential mapping on a mine scale. In addition, we confirm that the magnetic data, which provide the distribution of the underground igneous rock, can supplement the limited information from the surface igneous rock distribution. Therefore, rather than simply integrating various data sets, it will be more important to integrate information considering the geological correlation to genesis of minerals.

• Proceedings of the KSEG Conference
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• 2004.03a
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• pp.16001-16125
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• 2004

물리검층은 주로 석유탐사 분야에서 개발·이용되어왔으나 소구경 시추공을 이용하는 지반조사. 자원평가, 지하수조사 또는 환경오염조사 등에서 물리검층의 수요가 증가하고 있다. 국내에서 수행된 물리검층은 우라늄 탐사 목적으로 1980년 전후로 많이 수행되었으며 1990년 중반에는 지하수 조사에 일부 활용되어 왔다. 현재 물리검층의 활용도가 증가하고 있는 분야는 지반조사 분야로 원위치 물성측정, 시추공과 교차하는 암반의 균열파악 등 터널, 교량과 같은 각종 토목분야의 지반조사에 많이 활용되고 있다. 이외에도 지하수 유동특성 규명이나 환경오염조사, 자원평가(지열, 온천, 석·골재, 금속광상 등)에도 활용되고 있다. (중략)