Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean earth science society
Journal Basic Information
Journal DOI :
The Korean Earth Science Society
Editor in Chief :
Volume & Issues
Volume 19, Issue 6 - 00 1998
Volume 19, Issue 5 - 00 1998
Volume 19, Issue 4 - 00 1998
Volume 19, Issue 3 - 00 1998
Volume 19, Issue 2 - 00 1998
Volume 19, Issue 1 - 00 1998
Selecting the target year
A Study on the Consciousness of Science Teachers about Environmental Education in the Middle School
Gwon, Yeong-Guk ;
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 111~111
The consciousness of science teachers about environmental education has been investigated by the questionnaires retrieved from the middle schools of Taegu·Kyungpook area. The results are as follows: The science teachers are sensibie of their responsibilities in environmental problems. They pointed out that water quality is the most as severe problems. They have appreciated the environmental problems from a polluted environment. They responded that environmental problems became serious as science and technology develops. It is revealed that the respondents have never been trained about the environmental education. Furthermore no school takes environmental subject as a regular curriculum. In the case that environmental subject was not selected, science class takes charge of the subject. Most of teachers adopt an explanation type as teaching method with learning material of environmental education being insufficient. On regular examination, teachers seldom set a problem about environments topics. On the other hand they have supported a observation of behavior as the method of evaluation. It is revealed that obstacles in activating of environmental education have been t'-e narrow gate to an upper school and the lack of administrative and financial supports on educational material, man power and so forth.
Gravity Surveying with GPS
Choe, Gwang-Seon ; Park, Pil-Ho ;
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 120~120
We have studied the effectiveness of the gravity measurements using GPS. For 5 minutes GPS observations, latitude and longitude can be determined with standard deviation less than 1 cm and normal height can be obtained within 10 cm accuracy when baseline is shorter than 40 ㎞. Gravity measurements with GPS surveyings result in better effectiveness in most aspects such as coordinates determination and it's accuracy, number of gravity measurements, time and cost than with conventional levelling surveys.
Metamorphism of the Metasedimentary Rocks and Metabasites Around the Ogkwa area, Korea
An, Geon-Sang ; Kim, Jeong-Bin ;
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 127~127
Metasediments and metabasites in the Ogkwa area, Chonranam-Do, consist of phyllite, mica schist, quartzite, green schist, amphibolite and rarely calc schist. The metamorphic rocks in the area have undergone three stages of prograde metamorphism. The metamorphism, which made the most prevailing mineral assemblages in the area, is M2 stage metamorphism. During M2 stage metamorphism, the metamorphic grade in metapelites increases from the chlorite zone through the biotite zone to garnet zone toward east, representing intermediate P/T type regional metamorphism. The representative mineral assemblages of chlorite and biotite zones in the metapelites are muscovite + chlorite + quartz and biotite + muscovite + chlorite + quartz, respectively. Mineral assemblages, including muscovite and quartz, of the garnet zone is garnet + biotite + chlorite, garnet + chloritoid + chlorite, chloritoid + chlorite and garnet + chlorite. The M1 stage metamorphism is recognized by kyanite bearing assemblage (kyanite + biotite) of metapelites and by hornblende + plagioclase assemblage of amphibolite in the chlorite zone. The M3 stage metamorphism is recognized in the contact boundary, which area is the chlorite zone, with Sunchang foliated granite. The M3 stage is thermal metamorphism due to the intrusion of the Jurassic granite occurred after M2 stage. The M3 stage metamorphism formed the mineral assemblages bearing andalusite (andalusite + biotite + muscovite + quartz ± staurolite ± chlorite).
On the Process of Condensation Occurring on the Surface of Pyochung Monument Stone in Milyang, South Korea
Jin, Byeong-Hwa ;
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 139~139
The process of the condensation often occurring on the surface of Pyochung monument stone was studied in climatological, numerical and experimental research. These phenomena occurred in a cold and rainy day due to the contact of warm and moist air with the cooled stone. The reason of cooling of the stone in this study was considered mainly due to the roof, blocking the direct solar radiation. From the numerical experiment, the stone with the roof had 3.8℃/day lower, and less temperature amplitude in its diurnal cycle than that without roof. Droplets were made in large amount during early condensation stage, which has large difference of temperature between the stone and the surrounding air. In the meantime they were formed in smaller amount during later condensation stage under small difference of temperature between them. Condensation amount of 3.3liter/hour was simulated in the case of 20℃ difference between the stone and the surrounding air. In addition, the condensation duration was inferred to be 12 to 24 hours. Sundqvist(1988)'s cloud model was very fit to this condensation formation, and this result revealed few difference between the measured and the estimated amounts.
A Study on the GPS Reference Station of the National Defense Using the Earth Gravitational Model (1996)
Park, Yong-Jun ;
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 146~146
This study presents a way in which three dimensional World Geodetic System 1984 (WGS84) determined by GPS could be devised, through interpolation using EGM96 geoid model, into three dimensional WGS84 MGRS exclusively for military purposes. Furthermore, military GPS reference station has been set up for the application of the determined WGS84 MGRS. The results from the comparative analysis between the WGS84 MGRS transformed by GPS receiver and WGS84 MGRS with its coordinates transformed by seven parameters method showed no occurrence of an error on the plane level while scope of error on the height was -1.74 m to -0.6 m average. Moreover, for the placement of military GPS reference station GPS observation results from GPS observatory (IMST) in Advance Institute of Military Science and Technology and GPS observatory (TAEJ) in Korea Astronomy Observatory were taken simultaneously by which three dimensional geodetic coordinates of $quot;IMST$quot; obtained 37 37'36$quot;.99078±0.0017$quot; N, 127 06'09$quot;.79302E±0.0028$quot; E, height 47.512 m±0.05 m with RMS error of 6 cm precision on the WGS84. The outcome of determined three dimensional geodetic coordinates transformed to MGRS was marked plane level S2S CG 3257666117, height 47.562 m which shows 0.05 m difference which concur with the height error of the geodetic coordinates.
Geochemistry on Igneous Rocks in Eastern Region of the Jangsung area, Chonnam
Kim, Yong-Jun ; Lee, Chang-Sin ; Kim, Hui-Nam ; Park, Jae-Bong ;
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 154~154
Main aspect of this study are to clarify geochemistry of igneous rocks in eastern region of the Jangsung area. These igneous rocks are consist of Pre-Cambrian granite gneiss, Jurassic gabbro-biotite granodiorite-porphyritic granite and Cretaceous leucogranite-porphyry. These igneous rocks plotted on harker diagram and AMF diagram show mostly similar trend to calc-alkalic rock series. Granitic rocks plotted on a Q-Ab-Or diagram (Petrogeny's residua system) fall around 3 Kb pressure field. On the ACF diagram, these granitic rocks appear to be dominantly I-type granite, but granite gneiss and leucogranite prevail over S-type granite. Chondrite normalized REE Pattern of these igneous rocks have more perfact (-)Eu anomaly in gabbro, biotite granodiorite and porphyritic granite according to incresing sequence. This can be attributed to differentiation sequence. Pyroxene of gabbro are hypersthene and augite-pigeonite, and exsolution lamellae of both pyroxenes oriented parallel to the (100) plane. This gabbro crystallized above the pigeonite-opx inversion temperature. Garnet of leucogranite is almandine-spessartine solid solution. Leucogranite comes and to syn-COLG and WPG generated from melting of deep level metasediments by collition movement in c ntinental margin between Eurasia plate and Kula plate at middle Cretaceous period (104 Ma).
Mineral Composition and Orbicular Structure of the Orbicular Gabbro from the Mt. Hwangryeong, Pusan, Korea
Yun, Seong-Hyo ; Go, Jeong-Seon ;
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 171~171
Orbicular gabbroid from the Mt. Hwangryeong, Pusan, has been examined petrographically and mineralogically in order to determine the nature and origin of the orbicular texture. Orbicular rocks generally consist of orbs, matrix and surrounding country rock. Orbs, which are composed of a central core encircled by one or more concentric shells, are spheroidal or ellipsoidal, and they range from 7 ㎝ to 12.5 ㎝ in diameter. Matrix is the part between orbs and immediately surrounding orbs. Orbs are classified into six types such as leucocratic proto-core, mesocratic proto-core, single shelled orbs with leucocratic core, single-shelled orbs with mesocratic care, multi-shelled orbs and complex orbs, according to the state of growth and the number of shells. The orbs are early-formed, high-temperature plagioclase- and olivine-rich, and were primarily magmatic in origin.
Quantitative Analysis of the Major Elements in Igneous Rocks by X-ray Fluorescence Spectrometer
Park, Cheon-Yeong ; Park, Yeong-Seok ; Sin, In-Hyeon ; Jeong, Yeon-Jung ; , ;
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 182~182
An accurate and rapid method for quantitative analysis of 10 major elements (SiO₂, TiO₂, Al₂O₃, Fe₂O₃, MnO, MgO, CaO, Na₂O, K₂O and P₂O_5) in silicate rocks has been investigated by using a X-ray fluorescence spectrometer (Rigaku RIX 2000) with Rh-tube, and PC detector. Accelerating voltage and tube current are 50 kV and 50 mA, respectively. Fused glass bead of standard rock samples of Geological Survey of Japan were used for the analysis. Prepared from mixtures of lg rock powdered and 6g flux (lithium tetraborate (Li₂B₄O_7): lithium metaborate (LiBO₄)=1:2) by an automatic Claisse fluxy galss bead sampler. This mixture is fused at an appropriate temperature (normally 1000∼1150℃) in Pt-5% Au crcible for 11 minutes with agitation to ensure complete dissolution and mixing. Calibration lines were constructed using eight Geological Survey of Japan igneous rock reference samples. For each line, the correlation coefficient is greater than 0.9999 except for K₂O (0915), indicating that the correction and calibration procedures were approprite for accurate analyses in silicate rock. In checking the errors of standard reference JG-3 and JB-la in this work, the relative errors of constituents such as SiO₂, TiO₂, Al₂O₃, Fe₂O₃ were less than ±1% in JG-3, and the relative errors of constituents such as SiO₂, TiO₂, Al₂O₃, MnO and Fe₂O₃ were less than ±5% in JB-la. The analytical results of the major component on the 2 reference sample of igneous rock, issued by Geological Survey of Japan, were fairly good in comparison with the recommended value.
K-Ar Age Determination and Geochemistry of the Granitic Rocks around False Bay, Livingston Island, South Shetland Islands: Implication for Magma Generation and Migration of Plutonic Activity in Space and Time
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 194~194
K-Ar mineral ages and geochemical properties of the granitic rocks around False Bay, Livingston Island, South Shetland Islands, are reported, and the problems on the source materials and migration of plutonic activity in space and time are discussed. The granitic rocks, almost tonalites, are widespread in the southeastern Livingston Island, and they are called 'tonalite province' in this study. The studied granitic body around False Bay mainly comprises tonalite with subordinately quartz diorite and granodiorite. K-Ar mineral ages of tonalite and granodiorite are 27.6±0.9 Ma and 37.5±0.8 Ma, respectively. Because granodiorite intruded tonalite as small dikes, the mineral age of tonalite is considered to have become younger by radiogenic Ar loss. The intrusion age of the granitic body is thus thought to be early to middle Eocene time. All granitic rocks show the geochemical nature of calc-alkaline, metaluminous and volcanic arc granites. Relative to quartz diorite, tonalite tends to have higher Al₂O₃, MgO, CaO, Ba, Th, Sr and Co, and lower TiO₂, MnO, P₂O_5, Nb, Pb and Zn. Tonalite formed later than quartz diorite is LREE-enriched with unfractionated HREE and negative Eu anomalies, suggesting its generation from a shallower, abundant plagioclase source material. In contrast, quartz diorite is LREE-enriched with fractionated HREE and negligible Eu anomalies, suggesting ralatively mafic source material at a depth sufficient to stabilize garnet. These results are thought to be related with the change of tectonic regime from compressional to extensional field. It is likely that hot basalt underplating or emplacement at the base of continental crust is a prerequisite to raising the temparature required for the segregation of large-volume tonalite magma. The change of subduction mode of southern Pacific Plate is sufficient to explain on the migration of volcanic and plutonic activities which became younger northeastwards along the arc axis of South Shetland Islands.
A Comparative Analysis on the Distribution Characteristics of Airborne Metals Using Two-Way Analysis of Variance (ANOVA)
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 210~210
The relative relationship between temporal and spatial factors in controlling metal distribution behavior was investigated using monthly metal concentration data collected from four distinctive sampling sites (grassland, residential, commercial, and industrial site) of Won Ju city, Kang Won Do for approximately five year periods between 1991 and 1995. In order to meaningfully compare the relative role of spatial and temporal factors in controlling metal distribution, 2-way analysis of variance (ANOVA) was applied to these data sets. For the application of this method, temporal factors were investigated as a function of both annual and seasonal terms. The results of our data indicated several interesting aspects of metal-to-metal distribution behavior such that: (1) Pb, Fe, and Cu tend to exhibit enhanced variability in spatial scale relative to temporal scale, (2) Distribution variabilities for Mn and Ni are almost negligible in both temporal and spatial scale, (3) Cd is more temporally variable, while it is difficult to categorize the pattern of Cr. Although there are many limitations for the application of this approach, it offers a unique opportunity to directly compare the role between spatial and temporal factors in controlling metal distribution behavior. Through a refinement of method, it will be useful to diagnose the relative role of each factor in relation with geochemical implication of airborne metal distributions.
A Tournaisian (Lower Carboniferous) radiolarian zonation and radiolarians of the A. pseudoparadoxa Zone from Oese (Rheinische Schiefergebirge), Germany
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 216~216
A moderately well to poorly preserved radiolarian fauna was extracted from phosphorite nodules embedded in the $quot;Liegende Alaunschiefer$quot; (shale) at Oese (Rheinisehe Schiefergebirge), Germany. This faunal assemblage of Lower Carboniferous age contains representatives of 6 families, 15 genera, and 49 species and subspecies, of which 3 genera and 11 species and subspecies are new. Of the 75 genera, two are of uncertain taxonomic position. The faunal composition is very similar to that of the A. paradoxa Zone from Montagne Noire (Deflandre, 1944-1973; Gourmelon, 1987) in France, to the Baltalimani Formation fauna from Istanbul (Holdsworth, 1973), and to that of the A. pseudoparadoxa Zone from Amo¨nau Wetter (Giese and Schmidt-Effing, 1939) and bed 75 at Riescheid (Won, 1992), Germany. However, the presence of Albaillella pseudoparadoxa spongiosa n. ssp., a subspecies of the marker fossil of the A. pseudoparadoxa Zone, and the absence of A. paradoxa in the Oese fauna make it clear that the fauna of the $quot;Liegende Alaunschiefer$quot; from Oese is younger than the A. paradoxa Zone and belongs to the A. pseudoparadoxa Zone. Therefore, in the Oese section, the oldest Lower Carboniferous strata, including strata belong to the A. paradoxa Zone between the Lower Carboniferous $quot;Liegende Alaunschiefer$quot; and the Devonian $quot;Gattendorfia Kalk$quot;, are not present.A Toumaisian radiolarian zonation in Europe establsihed by Gourmelon (1987), Braun (1990, 1993), and Won (1991a) is revised and separated into A. paradoxa, A. pseudoparadoxa, A. deflartdrei, and A. perforate Zones. The base of the A. paradoxa Zone is the first appearance datum (FAD) of A. paradoxa, and its top, i.e., the base of the A. p.seudoparadoxa Zone is FAD of A. pseudoparadoxa; and its top, i.e., the base of the A. deflandrei Zone is the FAD of A. deflandrei, and its top, i.e., the base of A. perforate Zone is the last appearance datum (LAD) of A. deflandrei and the top of the A. perforata Zone is the FAD of A. indensis and Sphaerodiscus rata.Previous genus-level classification of the family Pylentonemidae based on the numerical characters and spine positions is reviewed. From this study, it has become clear that such characters, which were used as critical criteria for classifying genera, can be variable even within a species.
Scientific Achievements of the ODP (Ocean Drilling Program) and Paleoceanography of the North Atlantic Ocean (ODP Leg 162)
Hyeon, Sang-Min ; ; Eystein Jansen ; Maureen E. Raymo ;
Journal of the Korean earth science society, volume 19, issue 2, 1998, Pages 260~260
The ODP (Ocean Drilling Program) has been contributed to the progress of Earth Sciences through the coring of deep sea sediment, and is expected to contineous contributions on the understanding of earth science in future, The scientific achievements of ODP and the result of Leg 162 cruise are reviewed in this study. Leg 162 was the second of two ODP (Ocean Drilling Programs) legs designed to explore long term climate change in the North Atlantic Gateway region. A total of nine sites were drilled, four in the Norwegian-Greenland Seas and five in the North Atlantic. We have obtained total recovery of 6731 m of mostly continuous pelagic and hemipelagic deep sea sediments during 56 days at sea. These cores, from one of the most climatically reactive regions of the world, will allow us to investigate the natural behavior of the Earth's climate system over the last twenty million years. In particular, due to the recovery of unusually high sedimentation rate sequences at a number of sites, we will be able to characterize, for the first time, the magnitude of century to millennial scale variakions in climate and oceanography over millions of years. Thorugh the study of such natural variability, we will gain a deeper understanding of climate processes which have the potential to influence society over the next few hundred years.