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윤석태,고영구,류상옥 한국환경과학회 1999 한국환경과학회지 Vol.8 No.6
To investigate size distribution and metallic elements of surface sediments in Hampyong Bay, the southwestern coast of Korea, sedimentological and geochemical studies on surface sediments are carried out. The surface sediments of Hampyong Bay are classified into gravel, muddy sandy gravel, gravelly muddy sand, gravelly sandy mud, mud facies in accordance with areal characteristics. The coarse sediments are distributed on the subtidal zone along the main tidal channel and southeast intertidal flat of Hampyong Bay. On the other hand, the fine sediments are dominated in northeast and west intertidal flat of Hampyong Bay. Most metallic elements except for Ba in the sediments are closely interrelated with fine sediments and mutually with each element. Ba is maybe related with sandy sediments and inversely related with carbonate contents. Normalized by Al content, the sediment do not show any remarkable metal enrichments influenced by resonable artificial or environmental factors.
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무주 수왕광산에서 산출되는 섬아연석의 황동석 병변에 관한 연구
윤석태 한국지구과학회 2008 한국지구과학회지 Vol.29 No.7
The Soowang deposits occur in the quartz veins that were filled fissures in the middle Cretaceous porphyritic granite and/or the Precambrian Sobaegsan gneiss complex. Paragenetic studies suggest that the vein filling can be divided into four identifiable stages. Sphalerites were deposited by the cooling fluids at stages Ⅰ, Ⅱ, and Ⅲ. The results of microscopic observation and EPMA analysis suggest that the chalcopyrite dots and disease in sphalerite are replacement products by later hydrothermal solution at the early stage Ⅲ. The inferred processes of chalcopyrite disease are as follows : (1) Fe enrichment to the margins and along the cracks of the Fe-poor sphalerite by Fe-rich solution, (2) Formation of chalcopyrite dots in the Fe-enriched sphalerite formed at the stage Ⅱ, and Fe reduction of sphalerite near the chalcopyrite dots by Cu-bearing solution, (3) Formation of "chalcopyrite disease" penetrating the compositional zoning of sphalerite at the early stage Ⅲ. 수왕광상은 중생대 백악기 중기의 반상화강암이나 선캄브리아기의 소백산 편마암 복합체에 발달한 열극을 충진한 석영맥에서 산출된다. 광물 공생군에 대한 연구 결과 광화작용은 4차례에 걸쳐 일어났다. 섬아연석은 광화작용이 진행되는 동안 광화Ⅰ, Ⅱ, Ⅲ기에 각각 정출하였다. 현미경 관찰과 전자현미분석 결과 섬아연석에서 나타나는 황동석 점적과 황동석 병변은 광화 Ⅲ기 초에 열수용액의 교대작용에 의하여 생성되었을 것으로 생각된다. 황동석 병변의 생성 과정은 아래와 같다. (1) Fe가 풍부한 용액이 Fe가 결핍된 섬아연석의 가장자리나 틈을 통해 Fe 부화 (2) 광화Ⅱ기에 Fe가 결핍된 섬아연석에 황동석 점적을 형성하고 Cu를 함유한 용액에 의해 황동석 점적 주변의 섬아연석에 Fe 감소 (3) 광화Ⅲ기 초에 황동석 병변을 형성하였다.
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윤석태,이숙,고영구 全南大學校 師範大學 附設 科學敎育硏究所 2002 科學敎育硏究誌 Vol.26 No.1
We recognize that many earth science terms are written in Chinese Characters in middle and high school textbooks. We investigate whether students with more knowledge of Chinese Character get higher academic adaptability in inquiry activities using the concept and understanding level of earth science terms than the students with less knowledge of Chinese Character. And we analyze which relationship exist between two groups. Surveyed students are second graders in high schools in nationwide who finished first semester right now. We research them through self-developed questionnaire considering students learning level. We use technical statistics to verify the interrelationship among questions and significance of research results. The study results are that students with more Chinese Character knowledge show high understanding level and high correct answer rate in inquiry questions using concept. However, the students with little knowledge also show high correct answer rate in inquiry question using concept but there is only a little difference on the level of concept understanding for earth science education is linearly connected from elementary school to high school. We will conclude that Chinese Character learning will help understand better concept but the lack of knowledge about Chinese Character will not be obstacle to understand the concepts in earth science futhermore to do inquiry activities using the concept
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암석과 광물에 대한 중학생들의 흥미도와 이해도에 관한 연구
윤석태,이승희 全南大學校 師範大學 科學敎育硏究所 2001 科學敎育硏究誌 Vol.25 No.1
Interests, understandings and distinctions of middle school students on rock , mineral and their relationships on science grade are analyzed in this study. The results are as follows. 1) Considering interests on rock and mineral in science grade high group and low group students have more interests and middIe group students are have the least interests. 2) Considering understandings on rock and mineral in science grade high group students have much more understandings than low group students. 3) Considering distinctions on rock and mineral in science grade high group is better than the others on rock, and three groups are similar on mineral. 4) Interests on all students is low and their ability of distinctions is much lower than understandings. 5) Interests-understandings, interests-distinctions, understandings-distinctions are positively correlated with each other, and relationships between understandings and distinctions is very high and relationships between interests and distinctions is very low. To increase interests, understandings and distinctions of Middle school students on rock and mineral, research on earth science textbooks and improvement of teaching method with diverse teaching materials seem to be necessary.
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윤석태,고영구,김종희,신상은,오강호,김해경,문병찬 全南大學校 師範大學 科學敎育硏究所 2012 科學敎育硏究誌 Vol.36 No.1
This study aims to evaluation on geographic and geological assets in Bongamri and Sangsong island, to keep and to develop them. The study carried out in the aspects of petrography and landscape field works, which include lithographical and geomorphological surveys and thin section study. The study areas are mainly composed of gneiss and granite (in part). In Sangsongdo area, characteristic geological features of veins, tafonis, folds and so forth encounter in its coast. The island also has interesting terrains of gravelly and sandy coasts, sea stacks, sea cliffs, ripple marks, sand bars. However, above assets are being injured by sea culture wastes, burning remnants, several suspended materials and artificial products. So, it needs that the assets are preserved.
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나주 오량동 일대에서 채집된 옹관편에 대한 광물 및 암석기재적 특성에 관한 연구
윤석태,고영구,조미순,오강호 호남고고학회 2011 湖南考古學報 Vol.39 No.-
나주시 오량동 옹관 가마터에서 수집된 옹관시편의 태토와 제작과정에 대한 시사점을 얻기 위해 이들에 대한 주성분 원소, 미량원소 및 희토류원소들에 대한 지구화학적 분석과 함께 시편의 편광현미경 관찰을 바탕으로 한 광물학적, 퇴적학적 그리고 암석조직의 기재적 연구를 행하였다. 그리고 현미경 하에서 연구가 어려운 광물들의 산출을 탐색하기 위해 X선 회절 분석을 병행하였다. 그 결과, 이들 시편들의 제작에는 각종 화학성분들의 함량분포에서 주변 지질과 관련성이 높은 풍화토나 퇴적물 등에서 유래된 동일한 태토가 사용되었으며, 조직 관찰에서 조립질 입자들의 산출에서 보는 것처럼 하상 퇴적물이 혼합되었을 가능성을 시사하였다. 또한, 시편의 조직 관찰과 광물들의 산출특성은 이들 시편들이 옹관 제작과정에서 상당한 고온의 열적 이력을 거쳤음을 지시하는 것으로 생각된다.
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