[표제지 등]
ABSTRACT
요약문
List of Figure
List of Table
칼라
목차
제1장 서언 17
제2장 연구 지역 개관 19
제3장 야외 조사 방법 24
제4장 실내 실험 방법 27
제1절 입도 분석 27
제2절 중광물 분석 28
1. 중광물 분리 28
2. 현미경 관찰 29
3. X-선 회절분석 29
4. 전자현미경 관찰 30
5. 화학 분석 30
제5장 결과 32
제1절 해저 지형 32
제2절 탄성파 탐사자료 해석[원문불량;p.32~33] 32
제3절 퇴적물 특성 42
제4절 중광물 함량 50
제5절 중광물의 광물학적 특성 53
제6절 중광물의 화학적 특성 68
제7절 유용광물의 함량 72
제8절 중광물 유망광구 평가 79
제6장 토의 및 결론 87
참고문헌 90
부록목차 15
부록 1. Positions of Sampling Sites 93
부록 2. Textural Parameters of Surface Sediments 99
판권지 104
Table 1. Heavy mineral contents in sandy fraction of the sediments. 51
Table 2. Chemical composition(%) of sandy fraction in the sediment. 69
Table 3. Rare earth elements(ppm) of sandy fraction in the sediments 70
Table 4. Rare earth elements(ppm) of heavy fraction in the sediments 71
Table 5. Economic heavy mineral content (%) in the heavy fractions. 72
Table 6. Evaluation of ilmenite potential in the sediments. 82
Table 7. Evaluation of rutile potential in the sediments. 83
Table 8. Evaluation of sphene potential in the sediments. 84
Table 9. Evaluation of zircon potential in the sediments. 85
Table 10. Evaluation of heavy mineral potentials in the sediments. 86
Fig.1. Geologic map of study area. 20
Fig.2. Velocities and directions of maximum flood tide in study area. 22
Fig.3. Velocities and directions of maximum ebb tide in study area. 23
Fig.4. Track chart of geophysical survey. 25
Fig.5. Location map of sampling site. 26
Fig.6. Bathymetry of study area. 33
Fig.7. Echosounder record showing rock outcrop.[원문불량;p.32] 34
Fig.8. Echosounder record showing flat sea bottom morphology.[원문불량;p.33] 35
Fig.9. Map showing morphological features of the study area. 36
Fig.10. A mini-sparker profile showing the peaks of acoustic basement, consolidated sediments, lower and middle sequences. 38
Fig.11. A uniboom profile showing lower and middle sequences, lower and upper units of middle sequence (KIGAM, 1977). 39
Fig.12. A 3.5 KHz profile showing upper and middle sequences (KIGAM, 1977). 41
Fig.13. Distribution map of sediment types of bottom sediment classified according to the Folk (1968)'s ternary diagram. 43
Fig.14. Distribution map of mean grain size of bottom sediment. 45
Fig.15. Diagram showing the pattern of grain size distribution of inner and outer coastal zones in the study area. 46
Fig.16. Distribution map of sorting of bottom sediment. 47
Fig.17. Distribution map of skewness of bottom sediment. 48
Fig.18. Distribution map of kurtosis of bottom sediment. 49
Fig.19. Heavy mineral distribution in study area. 52
Fig.20. Optical micrographs of heavy mineral grains in the 3-4Ø fraction with magnification ×63. (Upper: sample no.33, Lower; sample no.104). 57
Fig.21. Optical micrographs of heavy mineral grains in the 3-4Ø fraction with magnification ×63. (Upper: sample no.240, Lower; sample no.225) 58
Fig.22. X-ray diffraction patterns of heavy fraction in the sediments (m: muscovite, h: hornblende(amphibole), c: chlorite, q: quartz, p: plagioclase) 59
Fig.23. Back-scattered(scatterred) electron image(BEI) and EDS spectrums of heavy mineral grains in the 3-4Ø fraction of the sample no.104. Ap; apatite, Il; ilmenite, Am; amphibole Ru; rutile, Fl; Florencite, Mo; monazite, Mu; muscovite, Sp; sphene 60
Fig.24. Back-scattered(scatterred) electron image(BEI) and EDS spectrums of heavy mineral grains in the 3-4Ø fraction of the sample no.161. Ap; apatite, Il; Ilmenite, Fe; Fe-oxide, Mo; monazite, Zr; zircon, Ru; rutile 61
Fig.25. Back-scattered(scatterred) electron image(BEI) and EDS spectrums of heavy mineral grains in the 3-4Ø fraction of the sample no.228. Il; ilmenite, Am; amphibole, Fe; Fe-oxide, Zr; zircon 62
Fig.26. Back-scattered electron images of heavy fraction (Upper : sample no. 33, Lower : sample no. 41, bar scale : 100㎛). Arrowed grain is ilmenite in the upper photograph. Am; amphibole, Ru; rutile, Ap; apatite, Mo; monazite, Zr; zircon 63
Fig.27. Back-scattered electron images of heavy fraction (Upper : sample no. 102, Lower : sample no. 103) Ap; apatite, Il; ilmenite, Fe; Fe-oxide, Ru; rutile, Mu; muscovite,Am; amphibole, Sp; sphene 64
Fig.28. Back-scattered electron images of heavy fraction (Upper : sample no. 129, Lower : sample no. 189) Am; amphibole, Ap; apatite, Il; ilmenite, Fe; Fe-oxide, Ru; rutile, Py; pyrite 65
Fig.29. Back-scattered electron images of heavy fraction in the 3-4Ø fraction of sample no.223. Lower is enlarged microtexture of skeletal sphene. Il; ilmenite, Fe; Fe-oxide, Am; amphibole, Py; pyrite, Sp; sphene 66
Fig.30. Back-scattered electron images of heavy fraction (Upper : sample no. 232, Lower : sample no. 240) Am; amphibole, Ap; apatite, Il; ilmenite, Fe; Fe-oxide, Ru; rutile, Zr; zircon 67
Fig.31. Contour map of ilmenite potentials in the study area. 74
Fig.32. Contour map of rutile potentials in the study area. 75
Fig.33. Contour map of zircon potentials in the study area. 76
Fig.34. Contour map of sphene potentials in the study area. 77
Fig.35. Contour map of economic heavy mineral abundance in the heavy fraction of the sediment in the study area. 78
Fig.36. Promising area of heavy mineral potentials in the study area. Block number is used in table 6-10. 80