変成~弱変成付加体におけるビトリナイトの反射率と光学異方性:四国東部の三波川変成帯-北部秩父帯を例として
徳島県神山町西部の三波川変成帯(緑泥石帯)および北部秩父帯の泥質岩に含まれる石炭化植物片の一種であるビトリナイトの反射率を検討した.測定にあたってはみかけの最大反射率とみかけの最小反射率を測定した.測定結果は,対象としたビトリナイトが光学的に二軸性であることを示唆している.最大反射率(Rmax),中間反射率(Rint),最小反射率(Rmin)の近似値を求めた.最大反射率は北部秩父帯においては北部(構造的下位)に向かって増大する傾向を示すが,三波川帯では定向的な変化傾向を示さない.また,最大反射率の平均値は,三波川帯よりも北部秩父帯の方が高い.最大反射率と最小反射率に対する扁平率((Rmax-R...
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Published in | 地質学雑誌 Vol. 113; no. 10; pp. 532 - 541 |
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Main Authors | , , |
Format | Journal Article |
Language | Japanese |
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一般社団法人 日本地質学会
2007
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Online Access | Get full text |
ISSN | 0016-7630 1349-9963 |
DOI | 10.5575/geosoc.113.532 |
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Abstract | 徳島県神山町西部の三波川変成帯(緑泥石帯)および北部秩父帯の泥質岩に含まれる石炭化植物片の一種であるビトリナイトの反射率を検討した.測定にあたってはみかけの最大反射率とみかけの最小反射率を測定した.測定結果は,対象としたビトリナイトが光学的に二軸性であることを示唆している.最大反射率(Rmax),中間反射率(Rint),最小反射率(Rmin)の近似値を求めた.最大反射率は北部秩父帯においては北部(構造的下位)に向かって増大する傾向を示すが,三波川帯では定向的な変化傾向を示さない.また,最大反射率の平均値は,三波川帯よりも北部秩父帯の方が高い.最大反射率と最小反射率に対する扁平率((Rmax-Rmin)/Rmax)は,北部秩父帯と三波川帯において,基本的に構造的下位に向かって増大する.これは,埋没深度もしくは付加深度の増大に起因する可能性がある. |
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AbstractList | 徳島県神山町西部の三波川変成帯(緑泥石帯)および北部秩父帯の泥質岩に含まれる石炭化植物片の一種であるビトリナイトの反射率を検討した.測定にあたってはみかけの最大反射率とみかけの最小反射率を測定した.測定結果は,対象としたビトリナイトが光学的に二軸性であることを示唆している.最大反射率(Rmax),中間反射率(Rint),最小反射率(Rmin)の近似値を求めた.最大反射率は北部秩父帯においては北部(構造的下位)に向かって増大する傾向を示すが,三波川帯では定向的な変化傾向を示さない.また,最大反射率の平均値は,三波川帯よりも北部秩父帯の方が高い.最大反射率と最小反射率に対する扁平率((Rmax-Rmin)/Rmax)は,北部秩父帯と三波川帯において,基本的に構造的下位に向かって増大する.これは,埋没深度もしくは付加深度の増大に起因する可能性がある. |
Author | 君波, 和雄 杉浦, 由希子 宮本, 真理子 |
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References | Raymond, A. C. and Murchison, D. G., 1988, Development of organic maturation in the thermal aureoles of sills and its relation to sediment compaction. Fuel, 67, 1599-1608. Dalla Torre, M., Capitani, C. De, Frey, M., Underwood, M. B., Mullis, J. and Cox, R., 1996, Very low-temperature metamorphism of shales from the Diablo Range, Franciscan Complex, California: New constraints on the exhumation path. Geol. Soc. Amer. Bull., 108, 578-601. 柳瀬 晶, 1996, ビトリナイト反射率による四国東部, 白亜系四万十帯メランジェの起源.地質雑, 102, 13-24 Mori, K. and Tagichi, K., 1988, Examination of the low-grade metamorphism in the Shimanto belt by vitrinite reflectance. Modern Geol., 12, 325-339. Underwood, M. B., Laughland, M. M., Byrne, T., Hibbard, J. P. and DiTullio, L., 1992, Thermal evolution of the Tertiary Shimanto Belt, Muroto Peninsula, Shikoku, Japan, Island Arc, 1, 116-132. Hara, I., Shiota, T., Hide, K., Kanai, K., Goto, M., Seki, S., Kaikiri, K., Takeda, K., Hayasaka, Y., Miyamato, T., Sakurai, Y. and Ohtomo, Y., 1992, Tectonic evolution of the Sambagawa schists and its implication in convergent margin processes. Jour. Sci., Hiroshima Univ., Ser. C, 9, 495-595. Barker, C. E. and Goldstein, R. H., 1990, Fluid-inclusion technique for determining maximum temperature in calcite and its comparison to the vitrinite reflectance geothermometer. Geology, 18, 1003-1006. Khorasani, G. K., Murchison, D. G. and Raymond, A. C., 1990, Molecular disordering in natural cokes approaching dyke and sill contacts. Fuel, 69, 1037-1046. Kiminami, K. and Ishihama, S., 2003, The parentage of low-grade metasediments in the Sanbagawa Metamorphic Belt, Shikoku, southwest Japan, based on whole-rock geochemistry. Sedimentary Geol., 159, 257-274. 鈴木舜一・小田幸人・土屋範芳, 1994, ビトリナイト反射率による来馬層群・手取層群・足羽層群の熱構造.地質雑, 100, 302-311 Stone, I. J. and Cook, A. C., 1979, The influence of some tectonic structures upon vitrinite reflectance. Jour. Geol., 87, 497-508. Omori, K., Taira, A., Tokuyama, H., Sakaguchi, A., Okamura, M. and Aihara, A., 1997, Paleothermal structure of the Shimanto accretionary prism, Shikoku, Japan: Role of an out-of sequence thrust. Geology, 25, 327-330. Waples, D. W., 1980, Time and temperature in petroleum formation: Application of Lopatin’s method to petroleum exploration. AAPG Bull., 64, 916-926. 鈴木舜一・小田幸人, 1995, 西南日本内帯夾炭三畳系のビトリナイト反射異方性と熱構造.地質雑, 101, 605-614 君波和雄・戸田祐貴, 2007, 徳島県美馬市南部の三波川変成帯の変堆積岩の原岩層.地質雑, 113, 158-167 Houseknecht, D. W. and Weesner, C. M. B., 1997, Rotational reflectance of dispersed vitrinite from the Arkoma basin. Org. Geochem, 26, 191-206. Zou Y.-R. and Peng, P., 2001, Overpressure retardation of organic-matter maturation: a kinetic model and its application. Marine Petrol. Geol., 18, 707-713. Cook, A. C., Murchison, D. G. and Scott, E., 1972, A British meta-anthractic coal of Devonian age. Geol. Jour., 8, 83-94. Bishop, A.N. and Abbott, G.D., 1993, The interrelationship of biological marker maturity parameters and molecular yields during contact metamorphism. Geochim. Cosmochim. Acta, 57, 3661-3668. McTavish, R. A., 1978, Pressure retardation of vitrinite diagenesis, offshore, north-west Europe. Nature, 271, 648-650. Goodargi, F., 1985, Optical properties of vitrinite carbonized at different pressures. Fuel, 64, 156-162. Bishop, A. N. and Abbott, G. D., 1995, Vitrinite reflectance and molecular geochemistry of Jurassic sediments: the influence of heating by Tertiary dykes (northwest Scotland). Org. Geochem., 22, 165-177. Law, B. E., 1992, Thermal maturity patterns of Cretaceous and Tertiary rocks, San Juan Basin, Colorado and New Mexico. Geol. Soc. Amer. Bull., 104, 192-207. Kilby, W. E., 1988, Recognition of vitrinite with non-uniaxial negative refrectance characteristics. Internat. Jour. Coal Geol., 9, 267-285. Dalla Torre, M., Mahlmann, R. F. and Ernst, W. G., 1997, Experimental study on the pressure dependence of vitrinite maturation. Geochim. Cosmochim. Acta, 61, 2921-2928. Komorek, J. and Morga, R., 2003, Vitrinite refrectance property change during heating under inert conditions. Internat. Jour. Coal Geol., 54, 125-136. Teichmuller, M. and Teichmuller, R., 1982, Causes of coalification. In Stach, E., Mackowsky, M.-Th., Teichmuller, M., Taylor, G. H., Chandra, D. and Teichmuller, R. eds., Coal Petrology. Gebruder Borntraeger, Berlin, 55-60. Sakaguchi, A., 1996, High paleogeothermal gradient with ridge subduction beneath the Cretaceous Shimanto accretionary prism, southwest Japan. Geology, 24, 795-798. 須鎗和巳・桑野幸夫・石田啓祐, 1982, 御荷鉾緑色岩類およびその周辺の層序と構造-その2.四国東部秩父累帯北帯の中生界層序に関する2・3の知見-, 徳島大教養紀要(自然科学), 15, 51-71 千々和一豊・亀田奈美江・石黒洋志・相原安津夫, 1993, 変成領域における石炭化植物片の物理的変化の予察-反射率と結晶度の対応-.九大理研報(地球惑星), 18, 47-64 君波和雄・大野幸則, 1999, ビトリナイト反射率からみた付加体中の現地性玄武岩による熱変成: 九州の後期白亜紀槙峰層を例として.地質学論集, no. 52, 243-253 |
References_xml | – reference: Khorasani, G. K., Murchison, D. G. and Raymond, A. C., 1990, Molecular disordering in natural cokes approaching dyke and sill contacts. Fuel, 69, 1037-1046. – reference: Kiminami, K. and Ishihama, S., 2003, The parentage of low-grade metasediments in the Sanbagawa Metamorphic Belt, Shikoku, southwest Japan, based on whole-rock geochemistry. Sedimentary Geol., 159, 257-274. – reference: Waples, D. W., 1980, Time and temperature in petroleum formation: Application of Lopatin’s method to petroleum exploration. AAPG Bull., 64, 916-926. – reference: Goodargi, F., 1985, Optical properties of vitrinite carbonized at different pressures. Fuel, 64, 156-162. – reference: Komorek, J. and Morga, R., 2003, Vitrinite refrectance property change during heating under inert conditions. Internat. Jour. Coal Geol., 54, 125-136. – reference: Teichmuller, M. and Teichmuller, R., 1982, Causes of coalification. In Stach, E., Mackowsky, M.-Th., Teichmuller, M., Taylor, G. H., Chandra, D. and Teichmuller, R. eds., Coal Petrology. Gebruder Borntraeger, Berlin, 55-60. – reference: Dalla Torre, M., Capitani, C. De, Frey, M., Underwood, M. B., Mullis, J. and Cox, R., 1996, Very low-temperature metamorphism of shales from the Diablo Range, Franciscan Complex, California: New constraints on the exhumation path. Geol. Soc. Amer. Bull., 108, 578-601. – reference: Raymond, A. C. and Murchison, D. G., 1988, Development of organic maturation in the thermal aureoles of sills and its relation to sediment compaction. Fuel, 67, 1599-1608. – reference: 須鎗和巳・桑野幸夫・石田啓祐, 1982, 御荷鉾緑色岩類およびその周辺の層序と構造-その2.四国東部秩父累帯北帯の中生界層序に関する2・3の知見-, 徳島大教養紀要(自然科学), 15, 51-71. – reference: Omori, K., Taira, A., Tokuyama, H., Sakaguchi, A., Okamura, M. and Aihara, A., 1997, Paleothermal structure of the Shimanto accretionary prism, Shikoku, Japan: Role of an out-of sequence thrust. Geology, 25, 327-330. – reference: Kilby, W. E., 1988, Recognition of vitrinite with non-uniaxial negative refrectance characteristics. Internat. Jour. Coal Geol., 9, 267-285. – reference: 千々和一豊・亀田奈美江・石黒洋志・相原安津夫, 1993, 変成領域における石炭化植物片の物理的変化の予察-反射率と結晶度の対応-.九大理研報(地球惑星), 18, 47-64. – reference: Sakaguchi, A., 1996, High paleogeothermal gradient with ridge subduction beneath the Cretaceous Shimanto accretionary prism, southwest Japan. Geology, 24, 795-798. – reference: 鈴木舜一・小田幸人, 1995, 西南日本内帯夾炭三畳系のビトリナイト反射異方性と熱構造.地質雑, 101, 605-614. – reference: Zou Y.-R. and Peng, P., 2001, Overpressure retardation of organic-matter maturation: a kinetic model and its application. Marine Petrol. Geol., 18, 707-713. – reference: 鈴木舜一・小田幸人・土屋範芳, 1994, ビトリナイト反射率による来馬層群・手取層群・足羽層群の熱構造.地質雑, 100, 302-311 – reference: Hara, I., Shiota, T., Hide, K., Kanai, K., Goto, M., Seki, S., Kaikiri, K., Takeda, K., Hayasaka, Y., Miyamato, T., Sakurai, Y. and Ohtomo, Y., 1992, Tectonic evolution of the Sambagawa schists and its implication in convergent margin processes. Jour. Sci., Hiroshima Univ., Ser. C, 9, 495-595. – reference: Stone, I. J. and Cook, A. C., 1979, The influence of some tectonic structures upon vitrinite reflectance. Jour. Geol., 87, 497-508. – reference: Cook, A. C., Murchison, D. G. and Scott, E., 1972, A British meta-anthractic coal of Devonian age. Geol. Jour., 8, 83-94. – reference: 君波和雄・戸田祐貴, 2007, 徳島県美馬市南部の三波川変成帯の変堆積岩の原岩層.地質雑, 113, 158-167. – reference: 君波和雄・大野幸則, 1999, ビトリナイト反射率からみた付加体中の現地性玄武岩による熱変成: 九州の後期白亜紀槙峰層を例として.地質学論集, no. 52, 243-253. – reference: Law, B. E., 1992, Thermal maturity patterns of Cretaceous and Tertiary rocks, San Juan Basin, Colorado and New Mexico. Geol. Soc. Amer. Bull., 104, 192-207. – reference: Mori, K. and Tagichi, K., 1988, Examination of the low-grade metamorphism in the Shimanto belt by vitrinite reflectance. Modern Geol., 12, 325-339. – reference: Barker, C. E. and Goldstein, R. H., 1990, Fluid-inclusion technique for determining maximum temperature in calcite and its comparison to the vitrinite reflectance geothermometer. Geology, 18, 1003-1006. – reference: Bishop, A.N. and Abbott, G.D., 1993, The interrelationship of biological marker maturity parameters and molecular yields during contact metamorphism. Geochim. Cosmochim. Acta, 57, 3661-3668. – reference: Bishop, A. N. and Abbott, G. D., 1995, Vitrinite reflectance and molecular geochemistry of Jurassic sediments: the influence of heating by Tertiary dykes (northwest Scotland). Org. Geochem., 22, 165-177. – reference: Houseknecht, D. W. and Weesner, C. M. B., 1997, Rotational reflectance of dispersed vitrinite from the Arkoma basin. Org. Geochem, 26, 191-206. – reference: McTavish, R. A., 1978, Pressure retardation of vitrinite diagenesis, offshore, north-west Europe. Nature, 271, 648-650. – reference: 柳瀬 晶, 1996, ビトリナイト反射率による四国東部, 白亜系四万十帯メランジェの起源.地質雑, 102, 13-24. – reference: Dalla Torre, M., Mahlmann, R. F. and Ernst, W. G., 1997, Experimental study on the pressure dependence of vitrinite maturation. Geochim. Cosmochim. Acta, 61, 2921-2928. – reference: Underwood, M. B., Laughland, M. M., Byrne, T., Hibbard, J. P. and DiTullio, L., 1992, Thermal evolution of the Tertiary Shimanto Belt, Muroto Peninsula, Shikoku, Japan, Island Arc, 1, 116-132. |
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Title | 変成~弱変成付加体におけるビトリナイトの反射率と光学異方性:四国東部の三波川変成帯-北部秩父帯を例として |
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