자원환경지질 (Economic and Environmental Geology)

  • 제32권4호
  • /
  • Pages.339-351
  • /
  • 1999
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  • 1225-7281(pISSN)
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  • 2288-7962(eISSN)
대한자원환경지질학회 (The Korean Society of Economic and Environmental Geology)
권호 표지

경남 양산 원동칼데라 중앙부의 감섬석-흑운모 화강암에 나타나는 포획암의 기원: 1. 암석기재학적 및 고자기학적 연구

The Origin of Enclave at Hornblende-biotite Granite in Central Woondong Caldera, Korea:1 Petrography and Palaeomagnetic Study

  • 발행 : 1999.08.01
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초록

Petrographic and palaeomagnetic studies have been conducted to understand the origin of dark-colored enclaves occurring in the hornblende biotite granite within the Wondong caldera. The enclaves are commonly elongted and rounded in shape. They are finer-grained and darker-colored than enclosing granite, but they have simliar mineral assemblage to that of granite. Under the microscope the enclaves show microstructures reflecting an igneius origin. The microstructures of igneous origin include elongate grain shapes of plagioclase, hornblende, apatite, poikilitic anhedral quartz and zoning of plagiclase. All above features indicate that the enclaves belong to the 'microgranitoid enclaves' of Vernon (1984). a total of 91 orirnted samples were drilled from 4 sites, and their AMS (anisotropy of magnetic susceptibility) axis directions and remance components were analyzed. The result shows thar both enclave and host granite have same AMS priniciple axis direction and same remanence magnetic direction in each site. The result of this study suggests that the anclaves were derived from the globules of magma, which were formed by pillowing of synpltonic dike of magma that is more mafic than the host granite magma.

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참고문헌

  1. 자원환경지질 v.30 옥천대에 대한 고자기 연구: 태백지역에서의 대자율 비등방성과 지구조적 응력장 김성욱;최은경;정연규;김인수
  2. 광사지질 v.23 포항이남 제3기 분지암석의 자기 비등방성과 지구조적 응력장 김인수
  3. 경남 언양일대의 언양화강암체에 관한 암석학적 연구 김재영
  4. 지질학회지 v.34 거제도 화강암질암의 마그마 불균질 혼합 증거: 1. 그 기재적 특성 김종선;이준동;윤성효
  5. 양산시 원효산 남부의 화강암질암체에 대한 암석학적 연구 진미정
  6. 광산지질 v.5 부산시 일원(언양-동래지역)의 화성활동과 광화작용에 관한 연구 차문성;김정진;윤선
  7. 울산 방어진일대 화강암의 암석학적 연구 최보심
  8. 한국지구과학회지 v.19 옥천대에 대한 고자기 연구; 북동온천대에서의 대자율 비등방성과 지구조적 응력장 최은경;김성욱;김인수
  9. 지질학회지 v.34 양산서부 원동칼데라의 진화와 유형 황상구
  10. 암석학회지 v.6 원동 칼데라의 화상작용과 화산과정 황상구;이기동;김상욱;이재영;이윤종
  11. 경남 밀양군 산내 중석광산 부근의 지질과 유체포유물 연구 황성규
  12. Geol. Soc. Am. Mem. v.159 A summary of critical relations in the central part of the Sierra Nevada Batholith, California, USA Bateman, P.C.
  13. Geol. Soc. Am. Bull. v.90 Crystallization, fractionation, and solidification of the Tuolumne Intrusive Series, Yosemite National Park, California Bateman, P.C.;Chappell, B.W.
  14. Mathematical Methods in the Physical Sciences(2nd ed.) Boas, M.L.
  15. Statistics and Data Analysis in Geology(2nd ed.) Davis, J.C.
  16. Development in Petrology v.3 Granites and Their enclave: the Bearing of Enclaves on the Origin Of Granites Didier, J.
  17. Development in Petrology v.13 Enclaves and Granite Petrology Didier, J.;Barbarin, B.
  18. Nature v.288 Vesiculation of mafic magma during replenishment of silicic magma resevoirs Eicheberger, J.C.
  19. Enclaves and Granite Petrology Relative rheology of coeval mafic and felsic magmas: Nature of resulting interaction processes and shape and mineral fabrics of mafic microgranular enclaves Fermandez, A.N.;Barbarin, B.;Didier, J.;Barbarin, B.(eds.)
  20. Proc. R. Soc. London v.A217 Dispersion on a Sphere Fisher, R.A.
  21. Contrib. Mineral. Petrol. v.76 Trace element behavior on granite genesis: a case study. The Calcalkaline plutonic association from the Qu rigut complex (Pyrenees, France) Fourcade, S.;All gre, C.J.
  22. Geophys. Surv. v.5 Magnetic anisotropy of rocks and its application in geology and geophysics Hrouda, F.
  23. Tectonophys v.79 Characterization of the magnetic fabric of rocks Jelinek, V.
  24. Geophys. J. R. astr. Soc. v.62 The least-squares line and plane and the analysis of paleomagnetic data Kirschvink, J.L.
  25. Petrology, Mineralogy and Isotopic Study of the Shallow-depth Emplaced Granitic Rocks, Southern Part of the Kyoungsang Basin, Korea-Origin of Micrographic Granite- Lee, J.I.
  26. J. Geol. v.91 A tale of two plutons: petrographic and mineralogic constraints on the petrogenesis of the Red lake and Eagle Peak plutons, central Sierra Nevada California Noyes, H.J.;Wones, D.R.;Frey, F.A.
  27. Earth Planet. Sci. Lett. v.66 Magma mixing in granitic rocks of the central Sierra Nevada, California Reid, J.B.;Evans, O.C.;Fates, D.G.
  28. Lithos v.16 Assimilation and partial melting of continental crust: evidence from the minerology and geochemistry of autoloths and xenoliths Tindle, A.G.;Pearce, J.A.
  29. J. Proc. R. Soc. N.S.W. v.116 Restite, xenoliths and microgranitoid enclaves in granites Vernon, R.H.
  30. Nature v.309 Microgranitoid enclave in granites-globules of hybridmagma quenched in plutonic environment Vernon, R.H.
  31. Contrib. Mineral. Petrol. v.87 Magma mixing: the Marsco suite, Isle of Skye, Scotland Vogel, T.A.;Younker, L.W.;Wilband, J.T.;Kampmueller, E.
  32. Tectonophysics v.43 Ultrametamorphism and granitoid genesis White, A.J.R.;Chappell, B.W.
  33. Geol. Soc. Amer. Bull. v.88 Specification of fabric shapes using an eigenvalue method Woodcock, N.H.
  34. Methods in Palaeomagnetism A.C. demagnetization of rocks: Analysis of result Zijderveld, J.D.A.:Collinson, D.W.(ed.);Creer, K.M.(ed.);Runcorn, S.K.(ed.)