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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Economic and Environmental Geology
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Journal DOI :
The Korean Society of Economic and Environmental Geology
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Volume & Issues
Volume 45, Issue 6 - Dec 2012
Volume 45, Issue 5 - Oct 2012
Volume 45, Issue 4 - Aug 2012
Volume 45, Issue 3 - Jun 2012
Volume 45, Issue 2 - Apr 2012
Volume 45, Issue 1 - Feb 2012
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Geochemical Characteristics and Pollution Level of Heavy Metals of Asian Dust in Daejeon Area, 2007 (spring season)
Lee, Pyeong-Koo ; Youm, Seung-Jun ; Bae, Beob-Geun ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 217~235
DOI : 10.9719/EEG.2012.45.3.217
We evaluated the geochemical characteristics and their potential pollution of Asian Dusts in Daejeon, Korea during spring 2007. Compared with the chemical compositions of soils in source area of Asian Dust, those of aerosols in Daejeon were enriched with trace elements (ten to hundred fold), inferring that pollutants from China have affected on local environment in adjoining country such as Korea. Chemical analysis of aerosols during Asian dust showed that fine particles (
) contained high contents of trace elements such as Cr, Cu, Pb, Zn, V, S, As, Cd, Co, Ni, Mo, Sb, Cs, Rb, Th, Sc and Y. In the case of TSP (Total Suspended Particle), Zr, Sr, Ba, Li, Th and U were contained much more than other trace elements. The contents of some elements (i.e. Li, Cs, Co, U, Cr, Ni, Rb, V, Th, Y, Sr and Sc) in aerosols collected in Asian Dust period, which are not likely enriched by air pollutants, were higher (2 - 4.2 fold) than those in Non Asian Dust period, indicating that these elements could be used as indicator elements for determining the occurrence of Asian Dust phenomena (especially, Sr, V, Cr & Li). In the case of Asian Dust coming through the big cities and/or industrial areas of China, the domestic aerosols had higher contents of trace elements (such as S, Cd, Zn, Pb, Cu, Mo and As) than those from Northeastern China via North Korea, indicating that the transportation courses of air mass are very important to determine the pollution degrees. Using the enrichment factors of trace elements in aerosols during Asian Dust and Non Asian Dust, we identified that some elements (i.e. S, Zn, Cu, Pb, As, Mo and Cd) were most problematic in terms of environmental hazard aspects, and these elements could affect adverse effects on human health as well as ecosystem and surface environment (soil and water) through long-lived precipitation.
Interpretation of Construction Technique by Compositional Analysis of Soil Stratum with Basement at the Mireuksaji Stone Pagoda
Yi, Jeong-Eun ; Lee, Chan-Hee ; Lee, Dong-Sik ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 237~253
DOI : 10.9719/EEG.2012.45.3.237
The Mireuksaji stone pagoda is constructed Baekje Period in the 7th century which is located in Iksan, Korea. This stone pagoda designated by National Treasure No. 11 is the only remaining pagoda. This pagoda has lost the original form in part and the whole stonework wase dismantled. Work for the restoration is currently in progress. This study was divided into soil strata such as construct layer of the temple site, foundation layer of the pagoda basement, and construct layer of the stylobate by stratum to interpretation the skill of rammed earth and making techniques. The of physical, mineralogical and geochemical characteristics of soil samples were identified. Five pieces of soil in and around the Mireuksaji temple site was selected for the comparative study to interpretate the mutual homogeneity among soil stratum. As a result, artificial addition has not been identified in all soil samples using rammed earth. The soils used for the basement of the stone pagoda (construct layer of the temple site, foundation layer of the pagoda basement, construct layer of the stylobate) were confirmed to be the same origin as soil in and around Mireuksaji temple site. Thus these results indicate that the basement of the pagoda was constructed using soils in and around the Mireuksaji temple site without work as careful selection.
Investigation of the Rice Plant Transfer and the Leaching Characteristics of Copper and Lead for the Stabilization Process with a Pilot Scale Test
Lee, Ha-Jung ; Lee, Min-Hee ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 255~264
DOI : 10.9719/EEG.2012.45.3.255
The stabilization using limestone (
) and steel making slag as the immobilization amendments for Cu and Pb contaminated farmland soils was investigated by batch tests, continuous column experiments and the pilot scale feasibility study with 4 testing grounds at the contaminated site. From the results of batch experiment, the amendment with the mixture of 3% of limestone and 2% of steel making slag reduced more than 85% of Cu and Pb compared with the soil without amendment. The acryl column (1 m in length and 15 cm in diameter) equipped with valves, tubes and a sprinkler was used for the continuous column experiments. Without the amendment, the Pb concentration of the leachate from the column maintained higher than 0.1 mg/L (groundwater tolerance limit). However, the amendment with 3% limestone and 2% steel making slag reduced more than 60% of Pb leaching concentration within 1 year and the Pb concentration of leachate maintained below 0.04 mg/L. For the testing ground without the amendment, the Pb and Cu concentrations of soil water after 60 days incubation were 0.38 mg/L and 0.69 mg/l, respectively, suggesting that the continuous leaching of Cu and Pb may occur from the site. For the testing ground amended with mixture of 3% of limestone + 2% of steel making slag, no water soluble Pb and Cu were detected after 20 days incubation. For all testing grounds, the ratio of Pb and Cu transfer to plant showed as following: root > leaves(including stem) > rice grain. The amendment with limestone and steel making slag reduced more than 75% Pb and Cu transfer to plant comparing with no amendment. The results of this study showed that the amendment with mixture of limestone and steel making slag decreases not only the leaching of heavy metals but also the plant transfer from the soil.
Studies on Mineralogical and Geochemical Characterization of Tailings and Leachate Water in Yonghwa Mine, Yeongyang Area
Kang, Han ; Kim, Young-Hun ; Jang, Yun-Deug ; Kim, Jeong-Jin ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 265~276
DOI : 10.9719/EEG.2012.45.3.265
Current study includes the analysis of mine tailings and leachate water and prediction of species originated from the tailings. The variation of contaminants were measured upon the distance from the tailings to the nearby stream. The ions concentration was highest at the tailings and pit mouth and it becomes lower as it goes far away from the origin. This is the reason that the leachate was diluted with the uncontaminated stream water. The tailings were mainly classified into reddish one and yellow one. The main mineral of reddish tailings were quarts, illite, plumbojarosite and a small amount of sphalerite. The main mineral of yellow tailings were muscovite, quarts, plumbojarosite, and a small amount of chalcopyrite and sphalerite. Pb and Zn were found in the leachate in high concentration and become the major contaminants. These come from the dissolution of plumbojarosite and sphalerite contained in the mine tailings.
Characteristics of Radon Variability in Soils at Busan Area
Kim, Jin-Seop ; Kim, Sun-Woong ; Lee, Hyo-Min ; Choi, Jeong-Yun ; Moon, Ki-Hoon ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 277~294
DOI : 10.9719/EEG.2012.45.3.277
The characteristics of temporal spacial radon variation in soil according to parent rock type and affecting factors were studied in Busan, Korea. The concentration of
in soils and their parent elements (
, U and Th) in rocks and soils were measured at 24 sites in Busan area. The distribution and transportation behavior of these parent elements were analyzed and their correlations to radon concentration in soil were determined. Topographic effects were also evaluated. Two in-situ radon measurement (soil probe and buried tube) methods were applied to measure radon concentration in soil and their accuracies were evaluated. The spatial variation of radon in soil generally reflected U concentration in the parent rock. Average radon concentrations were higher in plutonic rocks than in volcanic rocks and were decreased in the order of felsic>intermediate>mafic rock. However, the radon concentrations were significantly varied in soils developed from same parent rocks due to the disequilibrium of U and
between rock and soil. As results, the correlation of these element concentrations between rocks and soils was very low and radon concentrations in soils had highly co-related to the concentrations of these elements in soils. Th and
show complex enrichment characteristics, differing significantly with U, in soils developed from same parent rock because the geochemical behavior of these elements during weathering and soil developing process was different with U. The radon concentrations in the same depth of soil in slope area were also different according to positions. The radon concentrations in soils developed from same parent rocks (19 sites at Pusan National University) varied 6.8~29.8Bq/L range because of small scale topographic variation. The opposite seasonal variation pattern of radon were observed according to soil properties. It was determined that buried tube method is more accurate method than soil probe method and was very advantageous application for the analysis for the characteristics of temporal spacial radon variation in soil.
Identification of the Singal Fault Zone in the Kiheung Reservoir Area by Geotechnical Investigations
Gwon, Sun-Dal ; Kim, Sun-Kon ; Lee, Soung-Han ; Park, Kwon-Gyu ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 295~306
DOI : 10.9719/EEG.2012.45.3.295
In this study, the Singal fault zone in the Gyeonggi massif is identified in the Kiheung area. Geotechnical investigations were carried out to locate and characterize of the Singal fault zone in the Kiheung reservoir area. The N-S striking Shingal fault is known to be a Riedel-type strike-slip fault within the Choogaryung rift. Along the fault zone, 62 bore holes were drilled and electrical resistivity survey of about 11km, and vibroseis seismic refraction and reflection survey of about 500m were done. From the result of investigations, it is found that the fault zone, consisting mainly of gouge and breccia, has maximum width of 300 meters with anastomosing geometry of secondary fractures developed subparallel to the fault zone. We interpret these geometric features to be the result of structural development of flower-structure type at the restraining band of strike-slip fault. However, there are uncertainties of this interpretation because there are virtually no outcrops in the area. Further investigation to understand geometric features and linkage style of the fault zone.
Analysis of Permeation Efficiency in Soil for OPC and Non-Pollution MIS Grouts by Laboratory Model Test
Ahn, Jung-Ho ; Lim, Heui-Dae ; Choi, Dong-Nam ; Song, Young-Su ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 307~315
DOI : 10.9719/EEG.2012.45.3.307
In this paper, a laboratory model test was conducted to evaluate grouting efficiency of ordinary portland cement(OPC) and micro cement used in MIS(Micro-Injection Process System). For this research, a injection equipment was developed for pressure permeation which can evenly simulate various grouting tests in a laboratory and suggested a standard for the production of the test specimen. Using the injection device, the laboratory injection tests of grouts were prepared with water/cement ratio of 1:1, 2:1, 3:1, 4:1, and 5:1. The analysis of injection test for pressure permeation showed that the efficiency of injection increases linearly as the water/cement ratio increases. Comparison of efficiency of the injection indicates that MIS with a relatively smaller average diameter shows more efficient injection than the OPC. In the low ratio of water/cement as 2:1~1:1, the injection efficiency of OPC was especially poor. Also, a nonlinear grout volume-injection time is represented by a hyperbolic model and grout volume predicted by hyperbolic model was compared with the value measured. From the comparison, it shows that the hyperbolic model has the potential of evaluating the efficiency of grouting.
Sequence Stratigraphy of the Yeongweol Group (Cambrian-Ordovician), Taebaeksan Basin, Korea: Paleogeographic Implications
Kwon, Y.K. ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 317~333
DOI : 10.9719/EEG.2012.45.3.317
The Yeongweol Group is a Lower Paleozoic mixed carbonate-siliciclastic sequence in the Taebaeksan Basin of Korea, and consists of five lithologic formations: Sambangsan, Machari, Wagok, Mungok, and Yeongheung in ascending order. Sequence stratigraphic interpretation of the group indicates that initial flooding in the Yeongweol area of the Taebaeksan Basin resulted in basal siliciclastic-dominated sequences of the Sambangsan Formation during the Middle Cambrian. The accelerated sea-level rise in the late Middle to early Late Cambrian generated a mixed carbonate-siliciclastic slope or deep ramp sequence of shale, grainstone and breccia intercalations, representing the lower part of the Machari Formation. The continued rise of sea level in the Late Cambrian made substantial accommodation space and activated subtidal carbonate factory, forming carbonate-dominated subtidal platform sequence in the middle and upper parts of the Machari Formation. The overlying Wagok Formation might originally be a ramp carbonate sequence of subtidal ribbon carbonates and marls with conglomerates, deposited during the normal rise of relative sea level in the late Late Cambrian. The formation was affected by unstable dolomitization shortly after the deposition during the relative sea-level fall in the latest Cambrian or earliest Ordovician. Subsequently, it was extensively dolomitized under the deep burial diagenetic condition. During the Early Ordovician (Tremadocian), global transgression (viz. Sauk) was continued, and subtidal ramp deposition was sustained in the Yeongweol platform, forming the Mungok Formation. The formation is overlain by the peritidal carbonates of the Yeongheung Formation, and is stacked by cyclic sedimentation during the Early to Middle Ordovician (Arenigian to Caradocian). The lithologic change from subtidal ramp to peritidal facies is preserved at the uppermost part of the Mungok Formation. The transition between Sauk and Tippecanoe sequences is recognized within the middle part of the Yeongheung Formation as a minimum accommodation zone. The global eustatic fall in the earliest Middle Ordovician and the ensuing rise of relative sea level during the Darrwillian to Caradocian produced broadly-prograding peritidal carbonates of shallowing-upward cyclic successions within the Yeongheung Formation. The reconstructed relative sea-level curve of the Yeongweol platform is very similar to that of the Taebaek platform. This reveals that the Yeongweol platform experienced same tectonic movements with the Taebaek platform, and consequently that both platform sequences might be located in a body or somewhere separately in the margin of the North China platform. The significant differences in lithologic and stratigraphic successions imply that the Yeongweol platform was much far from the Taebaek platform and not associated with the Taebaek platform as a single depositional system. The Yeongweol platform was probably located in relatively open shallow marine environments, whereas the Taebaek platform was a part of the restricted embayments. During the late Paleozoic to early Mesozoic amalgamations of the Korean massifs, the Yeongweol platform was probably pushed against the Taebaek platform by the complex movement, forming fragmented platform sequences of the Taebaeksan Basin.
An Analysis on the Social Diffusion of Geo-technologies Outcome : Comparison of Recognition between Experts and Nonexperts
Kim, Chan-Souk ; Lee, Hyun-Seon ; Kim, Seong-Yong ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 335~346
DOI : 10.9719/EEG.2012.45.3.335
This study investigates the differences of recognition about geo-technologies outcome between experts and nonexperts. Based on these findings, this study would offer suggestions for future communication strategies on research outcome in a various field of scientific research as well as KIGAM. The result shows that there are differences between expert and nonexpert in the level of recognition about geoscience research outcome. The findings of this study emphasize the needs for recognizing the concept that geo-technologies are directly related to people's lives and external communication is necessary.
Governmental 2012 FY R&D Policy and Strategy on Geoscience and Mineral Resources
Ahn, Eun-Young ; Lee, Jae-Wook ; Lee, Ok-Sun ; Park, Jung-Kyu ;
Economic and Environmental Geology, volume 45, issue 3, 2012, Pages 347~350
DOI : 10.9719/EEG.2012.45.3.347