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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 41, Issue 6 - Dec 2008
Volume 41, Issue 5 - Oct 2008
Volume 41, Issue 4 - Aug 2008
Volume 41, Issue 3 - Jun 2008
Volume 41, Issue 2 - Apr 2008
Volume 41, Issue 1 - Feb 2008
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Characterization of the Kaolinite Synthesized According to the pH.
Ryu, Gyoung-Won ; Jang, Young-Nam ; Bae, In-Kook ; Suh, Yong-Jae ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 165~172
] used in these experiments was synthesized at 250
for 36 hrs by a hydrothermal process from amorphous
. The change of the mineralogical properties of the phase synthesized were observed in the pH range 2 to 9. The synthetic kaolinite were characterized by the analytical methods of XRD, IR, DIA, and FE-SEM. Kaolinite was obtained in a wide range of pH. The phases with high- to midium- defect kaolinite with high thermal stability were obtained from the acidic conditions and high-defect kaolinite with low thermal stability from the basic conditions. These variations of kaolinite properties appears to be related to the pH dependence of kaolinite surface speciation. The peaks intensity and resolution of the kaolinite decrease according to the alkalinity of the solution by the results of the IR testing. And the peak intensity increases in the 60 to 70
range due to dehydration reaction observed by TG-DTA. Such phenomena was the result of increase of unreacted amorphous materials in the high pH condition, which could be identified by FE-SEM.
CHIME Ages of Monazites from Metamorphic Rocks from the Precambrian Gyeonggi Gneiss Complex in the Shiheung and Seosan Group of the Gyeonggi Massif, South Korea
Kim, Kyu-Han ; Suzuki, Kazuhiro ; Lee, Jong-Ik ; Jang, Hyun-Kyung ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 173~181
CHIME ages were obtained from monazites in metamorphic rocks from the Seosan and Siheung Groups in the Gyeonggi gneiss complex, Korean peninsula. Monazite CHIME ages range from 234 to 257 Ma, corresponding to the late Permian to middle Triassic Songrim disturbance due to the collision event between the North and South China blocks within the Gyeonggi gneiss complex in the Korean peninsula. The CHIME ages are consistent with the metamorphic ages from the Hongseong area (231 Ma, Kim et al., 2006) and the Odesan area (245-248 Ma, Oh et al., 2006b) in the Gyeonggi gneiss complex and are older than those from the Dabie-Sulu collision belt (220
242 Ma, Yang or of., 2003; Liu et al., 2003, 2004) suggesting that the collision between the North and South China blocks had occurred earlier in Korea than China.
Physio-chemical and Mineralogical Characterization of the Tailings in the Guryoung Mining Area
Moon, Yong-Hee ; Kim, Jeong-Yeon ; Song, Yun-Goo ; Moon, Hi-Soo ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 183~199
This study is focused on characterization of the physio-chemical and mineralogical properties, investigation of their vertical changes in the tailing profile of the Guryoung mining area, classification of the profile into distinct zones, and condition conceptual model of physio-chemical conditions and phases-water relationships controlling the element behaviors in the tailings. The upper part of the groundwater is characterized by the high contents of
for whole rock analysis, low pH, and the occurrence of jarosite, schwertmannite and Fe-oxyhydroxide as the secondary mineral phases. The tailing profile can be divided into the covering soil, jarosite zone, Fe-sulfate zone, Fe-oxyhydroxide and gypsum-bearing pyrite zone, calcite-bearing pyrite zone, soil zone, and weathered zone on the based of the geochemical and mineralogical characteristics. The profile can be sampled into the oxidized zone and the carbonate-rich primary zone with the dramatic changes in pH and the secondary mineral phases. The conceptual model proposed for the tailing profile can be summarized that the oxidation of pyrite is the most important reaction controlling the changes in pH, the dissolution of the primary silicates and carbonates, the precipitation of secondary mineral phases, acid-neutralizing, and heavy metal behaviors through the profile.
Lime (CaO) and Limestone (
) Treatment as the Stabilization Process for Contaminated Farmland Soil around Abandoned Mine, Korea
Lee, Min-Hee ; Lee, Ye-Sun ; Yang, Min-Jun ; Kim, Jong-Seung ; Wang, Soo-Kyn ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 201~210
The mixing treatment process using lime (CaO) and limestone (
) as the immobilization amendments was applied for heavy metal contaminated filmland soils around Goro abandoned Zn-mine, Korea in the batch and pilot scale continuous column experiments. For the batch experiments, with the addition of 0.5 wt.% commercialized lime or limestone, leaching concentrations of As, Cd, Pb, and Zn from the contaminated filmland soil decreased by 70, 77, 94, and 95 %, respectively, compared to those without amendments. For the continuous pilot scale column experiments, the acryl column (30 cm in length and 20 cm in diameter) was designed and granulated lime and limestone were used. From the results of column experiments, with only 2 wt.% of granulated lime, As, Cd, and Zn leaching concentrations decreased by 63%, 97%, and 98%, respectively. With 2 wt.% of granulated limestone, As leaching concentration reduced from 135.6 to 30.2
within 5 months and maintained mostly below 10
, representing that more than 46% diminution of leaching concentration compared to that without the amendment mixing. For Cd and Zn, their leaching concentrations with only 2 wt.% of limestone mixing decreased by 97%, respectively compared to that without amendment mixing, suggesting that the capability of limestone to immobilize heavy metals in the filmland soil was outstanding and similar to that of lime. From the column experiments, it was investigated that if the efficiency of limestone to immobilize heavy metals from the soil was similar to that of lime, the limestone could be more available to immobilize heavy metals from the soil than lime because of low pH increase and thus less harmful side effect.
The Study on Integration of Gravities Anomaly in South Korea and Its Vicinities by Using Spherical Cap Harmonic Analysis
Hwang, Jong-Sun ; Kim, Hyung-Rae ; Kim, Chang-Hwan ; You, Sang-Hoon ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 211~217
The gravity anomalies that observed by ground and shipborne survey and calculated from GRACE satellite are combined by using spherical cap harmonic analysis (SCHA). In this study, ground gravity data from Korea Institute of Geoscience and Mineral Resource(KIGAM) and shipborne gravity data from National Ocean Research Institute(NORI) and Korea Ocean Research and Development institute(KORDI) were used. L-2 level GRACE Gravity Model (GGM02C) was also used for satellite gravity anomaly. The ground and shipborne surveyed data were combined and gridded using Krigging method with 0.05 degree interval and GRACE data were also gridded using the same method with 0.05 degree to harmonize with the resolution of SCHA that has coefficient up to 80. Generalized Minimal Residual(GMRES) inversion method was implemented for calculating the coefficients of SCHA using the gridded ground and satellite gravity anomalies that had 0 km and 50 km altitude, respectively. The results of inversion method showed good correlation of 0.950 and 0.995 with original ground and satellite data. The gravity anomaly using SCHA satisfies Laplace's equation, therefore, using these SCHA coefficients, gravity anomaly can be calculated at any altitude. In this study, gravity anomaly was calculated from 10 km to 60 km altitude and each altitude, very stable results were shown. The ground and shipborne gravity data that have higher resolution and satellite data in long wavelength are harmonized well with SCHA coefficients and successfully applied in South Korea area. If more continuous survey and muti-altitude surveyed data like airborne data available, more precise gravity anomaly can be acquired using SCHA method.
FastXcorr : FORTRAN Program for Fast Cross-over Error Correction of Marine Geophysical Survey Data
Kim, Kyong-O ; Kang, Moo-Hee ; Gong, Gee-Soo ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 219~223
Many cross-over errors due to position errors, meter errors, observation errors, sea conditions and so on occur when marine geophysical data collected by own and other agencies are merged, and these errors can create artificial anomalies which cause an improper interpretation. Many methods have been introduced to reduce cross-over errors. However, most methods are designed to compare each point or segment data to find cross-over points, and require a long processing time. Therefore, FORTRAN program (FastXcorr) is presented to fast determine cross-over points using an overlap-sector, and to adjust cross-over errors using a weighted linear interpolation algorithm.
The Site Effect of the Broadband Seismic Stations in Korea
Wee, Soung-Hoon ; Kim, Sung-Kyun ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 225~242
The site effect for 23 broadband seismic stations in the southern Korean Peninsula was estimated by using the spectral ratio of coda waves. In principle, the site effect means the pure amplification below the station excluding effects of seismic source and attenuation in the wave transmission. However, the site effect determined in this study is equivalent with the relative site amplification factor to the mean amplification for all stations. A total of 500 three-component seismograms from 35 earthquakes, of which magnitude ranged from 2.5 to 5.1 occurred from January, 2001 to January, 2007 was used to obtain the site amplification factor. The site amplification factors were estimated for the frequency bands centered at 0.2, 0.5, 1, 2, 5, 10, 15, and 20 Hz. It was found that the factors for two horizontal components of transverse and radial records were concordant with each other in the all frequency bands. However, the factor for the vertical component was found to be systematically lower than those for two horizontal components. The factors obtained in the low frequency band below 2 Hz ranged from 0.5 to 1.5 in all seismic stations except for KMA and KIGAM stations in Bagryeongdo (BRD1 and BRD2) of which factor showed high value above 1.5. Some stations such as SEO, SNU, HKU, NPR, and GKPI showed high value above 1.5 in the high frequency band from 5 to 20 Hz. Especially, the factors of GKP1 station represented extremely high value ranging from 1.8 to 7.8. Also, the factors for stations of KWJ, SND, and ULJ showed low value below 0.5. The spatial distribution for the relative amplification factor represented a tendency of being approximately lower in north-eastern area than south-western area in the southern Korean Peninsula.
Seasonal Variations of Iho and Hamdeok Beach Sediments in the Jeju Island, Korea
Youn, Jeung-Su ; Park, Yong-Seung ; Kim, Tae-Joung ; Park, Sang-Woon ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 243~252
The Iho and Hamdeok beaches, the major coastal beaches in Jeju Island, have been studied through size analysis and using an experimental extension pole and sediment trap in beach profile, in order to understand their textural characteristics, migration patterns, and seasonal change in beach geometry. The Iho beach is composed of coarse and medium sands, 590 m in total length. The foreshore slope is 12.3
in summer and 10.8
in winter, which shows more steeper in summer. The Hamdeok beach consisting mostly of shell fragments is 950 m long,
steep and 97.4
114.5 m wide, respectively. The suspended load drift concentrations in the studied beaches showed 4.5 mg/l during the period of summer and 33.2 mg/l in winter, and those of fine-grained sediments are derived mostly from the marine of northeastward direction. The typical beach transformation of the Iho beach is resulting from the construction of jetties in the west side that built up the sand inside the jetties, whereas the erosion is occurring on the east side of beach. The center and berm sides of the sand in the Hamdeok beach drift into the dune side during the period of the stormy winter season.
Modelling Study on Sustainable Resources Management System Using Material Flow Analysis(MFA) in Korea
Kim, Yu-Jeong ; Kim, Seong-Yong ; Heo, Eun-Nyeong ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 253~265
Sustainable resource management(SRM) is regarded as the core strategy to achieve Dematerialisation and Decoupling of economic growth from the use of natural resources and environmental degradation. This paper presents status SRM policy and research in worldwide, and analyzes decoupling of economic activity from energy consumption of domestic manufacturing, using decoupling factor. Also This paper suggests methodologies and strategies of SRM in Korea. SRM is established through various analysis and survey as following; forecasting of resource demand, material flow analysis and value chain analysis, resource market structure analysis. Through these analysis, we can obtain hot-spot and solution of environmental burden, recycling market management, recycling technology and best-optimal supply rate of primary and secondary resource. In Korea, resource management system must be linked with national and regional material flow analysis, and it is necessary to make SRM-law of national dimension for effective run of sustainable resource management system.
A Study on Communication Programs of Geo-Technology R&D Outcome Using the SMTCR Model
Kim, Chan-Souk ; Kim, Seong-Yong ;
Economic and Environmental Geology, volume 41, issue 2, 2008, Pages 267~273
This study was carried out to seek communication programs of geo-technology R&D outcome. For this, the following questions were set. 1) How much portion do KIGAM as the main body of geo-technology R&D among articles reported by major newspapers? 2) What are strength, weakness, opportunity, and threat factors of geo-technology R&D outcome from the communication view point? 3) What is the communication tasks and the communication ways for them? In conclusion, the communication programs of geo-technology R&D outcome using SMTCR(Sender-Message-Tool-Channel-Receiver) model were suggested.