The Journal of the Petrological Society of Korea (암석학회지)

The Petrological Society of Korea (한국암석학회)
권호 표지

K-Ar Age of the flutonic Rock fragments Discovered from the Deception Island and Its Geologic Implication

디셉션 섬에서 발견된 심성암편의 K-Ar 연령과 지질학적 의미

  • 박주언 (부경대학교 환경.해양대학 환경지질과학과) ;
  • 박계헌 (부경대학교 환경.해양대학 환경지질과학과) ;
  • 이종익 (한국해양연구원 부설 극지연구소) ;
  • 박병권 (한국해양연구원 부설 극지연구소)
  • Published : 2008.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

Many plutonic rock fragments of granitic composition were collected from the Deception Island. We obtained K-Ar ages of $62.5{\pm}1.2\;Ma$ and $140.7{\pm}2.7\;Ma$ from the two samples. Such result contradicts the general belief that most of the volcanic rocks of Deception Island are products of very recent activities and their maximum age does not exceed 200 ka. On the other hand, Mesozoic to Cenozoic rocks produced by subduction-related active magmatism have been reported from both South Shetland Islands and Antarctic Peninsula, located to the north and south of the Deception Island respectively. Also, various kinds of plutonic rocks with granitic composition are distributed widely. Therefore, plutonic rock fragments with granitic composition discovered from the Deception Island seem to indicate their derivation by capturing granitic crustal material underlying volcanic edifice during the volcanic activities, instead of differentiation from magmas related with recent volcanism. Ages and rock types of the plutonic rock fragments suggest arc-related origin just as adjacent South Shetland Islands and Antarctic Peninasula.

디셉션 섬에서 다수의 산성 심성암류 암편들을 발견하였다. 이 중 두 표품에 대한 K-Ar 연대측정 결과 $62.5{\pm}1.2\;Ma$와 $140.7{\pm}2.7\;Ma$의 결과를 구하였다. 이러한 결과는 수면 위에 돌출된 디셉션 섬의 대부분을 이루는 화산암들이 최근의 화산활동으로 생성되었으며 최대 20만년 이하의 연령을 갖는 것으로 알려져 있는 것과 배치된다. 한편 디셉션 섬의 북쪽과 남쪽에 위치한 남쉐틀랜드 제도와 남극반도에서는 중생대신생대 기간 동안에 섭입작용과 관련된 활발한 화성활동이 보고되었으며 다양한 종류의 화강암질 심성암들이 넓게 분포하고 있다. 따라서 디셉션 섬의 화강암질 심성암 암편들은 디셉션 섬에서 최근 활동한 화산작용시 마그마의 분화에 의해 생성된 것이 아니라, 그 이전에 만들어져서 현재 노출된 화산체의 하부 놓여있는 화강암질 지각물질이 화산활동시 포획되어 지표로 분출하게 된 것으로 해석된다. 연령과 암종으로 보아 이 심정암들은 인접한 남쉐틀랜드 제도 및 남극반도와 마찬가지로 화산호환경에서 생성되었을 가능성이 크다고 생각된다.

Keywords

References

  1. 김정민, 2001, 한국기초과학지원연구원에 도입된 K-Ar 연 대 측정 시스템: 개요 및 성능. 암석학회지, 10, 172-178
  2. 박병권, 좌용주, 1991, 남극 킹죠지섬 필데스반도의 화산암 의 K-Ar 방사성 연대. 지질학회지, 27, 409-415
  3. 이종익, 김현철, 이미정, 강천윤, Keisuke Nagao, 1998, 남 쉐틀랜드 군도 리빙스턴섬 폴스만 일대의 화강암류에 대 한 K-Ar 연대측정 및 지구화학적 연구. 마그마 발생과 관입활동의 시-공간적 변화에 대한 응용. 지구과학회지, 19, 194-209
  4. 좌용주, 이종익, 1992, 남극 킹죠지섬 팔데스반도의 화산암 류에 대한 지구화학적 연구. 지구과학회지, 13, 200-211
  5. Baker, P.E., 1982, The Cenozoic subduction history of the Pacific margin of the Antarctic Peninsula: Ridge cresttrench interactions. Jour. Geol. Soc. London, 139, 787-801 https://doi.org/10.1144/gsjgs.139.6.0787
  6. Baker, P.E., Dalziel, I.W.D. and Storey, B.C., 1991, Tectonic development of Scotia Arc region. In Tingey, R.J., ed. Antarctic geology, Oxford: Oxford University Press, 215-248
  7. Baker, P.E., McReath, M.A., Harvey, M.R., Roobol, M.J. and Davies, T.G., 1975, The geology of the South Shetland Islands: V. Volcanic evolution of Deception Island. British Antarctic Survey, Scientific Reports, 78, 81p
  8. Baraldo, A., Rapalini, A.E., Böhnel, H. and Mena, M., 2003, Paleomagnetic study of Deception Island, South Shetland Islands, Antarctica. Geophys. Jour. Int., 153, 333-343 https://doi.org/10.1046/j.1365-246X.2003.01881.x
  9. Fisk, M.R., 1990, Volcanism in the Bransfield Strait, Antarctica, Jour. South Am. Earth Sci., 3, 91-101 https://doi.org/10.1016/0895-9811(90)90022-S
  10. Giner-Robeles, J.L., Gonzalez-Casado, J.M., Gumiel, P., Martin, S. and Garcia, C., 2003, A kinematic model of Scotia plate (SW Atlantic Ocean). Jour. South Am. Earth Sci., 16, 179-191 https://doi.org/10.1016/S0895-9811(03)00064-6
  11. Gonzalez-Casado, J.M., Giner, J. and Lopez-Martinez, J., 2000, Bransfield Basin, Antarctic Peninsula: not a normal backarc basin. Geology, 28, 1043-1046 https://doi.org/10.1130/0091-7613(2000)28<1043:BBAPNA>2.0.CO;2
  12. Grad, M., Guterch, A. and Sroda, P., 1992, Upper crustal structure of Deception Island area, Bransfield Strait, West Antarctica. Antarctic Sci., 4, 469-476
  13. Hawkes, D.D., 1961, The geology of the South Shetland Islands, II. The geology and petrology of Deception Island. Falkland Islands Dependencies Survey. Sci. Rep., 27, 1-43
  14. Keller, R.A. and Fisk, M.R., 1992, Quaternary marginal basin volcanism in the Bransfield Strait as a modern analogue of the southern Chilean ophiolites, in Ophiolites and Their Modern Oceanic Analogues, edited by Parson, L.M., Murton, B.J. and Browning, P., Geol. Soc. Spec. Publ., 60, 155-170 https://doi.org/10.1144/GSL.SP.1992.060.01.09
  15. Keller, R.A., Fisk, M.R., White, W.M. and Birkenmajer, K., 1992, Isotopic and trace element constraints on mixing and melting models of marginal basin volcanism, Bransfield Strait, Antarctica. Earth Planet. Sci. Lett., 111, 287-303 https://doi.org/10.1016/0012-821X(92)90185-X
  16. Kim, H., Lee, K.I., Chose, M.Y., Cho, M., Zheng, X., Sang, H., and Qiu, J., 2000, Geochronologic evidence for Early Cretaceous volcanic activity on Barton Peninsula, King George Island, Antarctica. Polar Res., 19, 251-260 https://doi.org/10.1111/j.1751-8369.2000.tb00347.x
  17. Lawver, L.A., Keller, R.A., Fisk, M.R. and Strelin, J.A., 1995, Bransfield Basin, Antarctic Peninsula: active extension behind a dead arc. In Taylor, B., ed. Backarc basins: Tectonic and magmatism. Plenum Press: Amsterdam, 315-342
  18. Lawver, L.A., Sloan, B. J., Baker, D.H.N., Ghidella, M., Von Herzaen, R.P., Keller, R.A., Klinkhammer, G.P. and Chin, C.S., 1996, Distributed, active extension in Bransfield Basin, Antarctic Peninsula: evidence from multibeam batymetry. GSA Today, 6-11, 1-6
  19. Leat, P.T., Riley, T.R., Wareham, C.D., Millar, I.L., Kelley, S.P., and Storey, B.C., 2002, Tectonic setting of primitive magmas in volcanic arcs: an example from the Antarctic Peninsula. Jour. Geol. Soc. London, 159, 31-44 https://doi.org/10.1144/0016-764900-132
  20. Livermore, R., Balanya, J.C., Maldonado, A, Martinez, J.M., Rodriguez, J., Sanz de Galdeano, C., Galindo, J., Jabaloy, A., Barnolas, A., Somoza, L., Hernandez, J., Surinach, E. and Viseras, C., 2000, Autopsy on a dead spreading center: the Phoenix Ridge, Drake Passage, Antarctica. Geology, 28, 607-610 https://doi.org/10.1130/0091-7613(2000)28<607:AOADSC>2.0.CO;2
  21. Machado, A., Chemale, F., Jr., Conceicão, R.V., Kawaskita, K., Morata, D., Oteiza, O., and Van Schmus, W.R., 2005a, Modeling of subduction components in the Genesis of the Meso-Cenozoic igneous rocks from the South Shetland Arc, Antarctica. Lithos, 82, 435-453 https://doi.org/10.1016/j.lithos.2004.09.026
  22. Machado, A., Lima, E.F., Chemale Jr., F., Morata, D., Oteiza, O., and Almeida, D.P.M., A.M.G. Figueiredod, F.M. Alexandrea, J.L. Urrutia, 2005b, Geochemistry constraints of Mesozoic-Cenozoic calc-alkaline magmatism in the South Shetland arc, Antarctica. Jour. South Am. Earth Sci., 18, 407-425 https://doi.org/10.1016/j.jsames.2004.11.011
  23. Maldonado, A., R. Larter, D., and Aldaya, F., 1994, Forearc tectonic evolution of the South Shetland margin, Antarctic Peninsula. Tectonics, 13, 1345-1370 https://doi.org/10.1029/94TC01352
  24. Marti, J. and Baraldo, A., 1990, Pre-caldera pyroclastic deposits of Deception Island (South Shetland Islands). Antarctic Sci., 2, 345-352
  25. Munoz-Martin, A., Catalan, M., Martin-Davila, J. and Carbo, A., 2005, Upper crustal structure of Deception Island area (Bransfield Strait, Antarctica) from gravity and magnetic modelling. Antarctic Sci., 17, 213-224 https://doi.org/10.1017/S0954102005002622
  26. Pallas, R., Smellie, J.L., Casas, J.A. and Calvet, J., 2001, Using tephrochronology to date temperate ice: correlation between ice-tephras on Livingston Island and eruptive units on Deception Island volcano (South Shetland Islands, Antarctica). The Holocene, 11, 149-160 https://doi.org/10.1191/095968301669281809
  27. Park, B.-K., 1989, Potassium-argon radiometric ages of volcanic and plutonic rocks from the Barton Peinsula, King George Island, Antarctica. Jour. Geol. Soc. Korea, 25, 495-497
  28. Pelayo, A.M., and Wiens, D.A., 1989, Seismotectonics and relative plate motions in the Scotia Sea region, Jour. Geophys. Res, 94, 7293-7320 https://doi.org/10.1029/JB094iB06p07293
  29. Prieto, M.J., Canals, M., Ercilla, G., and de Batist, M., 1998, Structure and geodynamic evolution of the Central Bransfield Basin (NW Antarctica) from seismic reflection data. Marine Geology, 149, 17-38 https://doi.org/10.1016/S0025-3227(98)00038-3
  30. Riley, T.R. and Leat, P.T., 1999, Large volume silicic volcanism along the proto-Pacific margin of Gondwana: lithological and stratigraphical investigations from the Antarctic Peninsular. Geol. Mag., 136, 1-16 https://doi.org/10.1017/S0016756899002265
  31. Riley, T.R., Leat, P.T., Kelley, S.P., Millar, I.L., and Thirlwall, M.F., 2003, Thinning of the Antarctic peninsula lithosphere through the Mesozoic: evidence from Middle Jurassic basaltic lavas. Lithos, 67, 163-179 https://doi.org/10.1016/S0024-4937(02)00266-9
  32. Risso, C. and Aparicio, A., 2002, Plutonic xenoliths in Deception Island (Antarctica). Terra Antarctica, 9, 95-99
  33. Scarrow, J.H., Vaughan, A.P.M., and Leat, P.T., 1997, Ridge-trench collision-induced switching of arc tectonics and magma sources: clues from Antarctic Peninsula mafic dykes. Terra Nova, 9, 255-259 https://doi.org/10.1111/j.1365-3121.1997.tb00024.x
  34. Smellie, J.L., 1989, Deception Island. (In Dalziel, I.W.D., ed. Tectonics of Scotia arc, Antarctica. 28th International geological Congress, Field Trip Guidebook T180. Washington, D.C., American Geophysical Union, 146-152.
  35. Smellie, J.L., 2001, Lithostratigraphy and volcanic evolution of Deception Island. South Shetland Islands. Antarctic Sci., 13, 188-209
  36. Smellie, J.L. and Lopez-Martinez, J., 2000, Geologic map of Deception Island. BAS GEOMAP series, Sheet 6-a, 1:25.000, with supplementary text. Cambridge: British Antarctic Survey
  37. Smellie, J.L., Lopez-Martinez J., Headland, R.K., Hernandez- Cifuentes, F., Maestro, A., Millar, I.L., Rey, J., Serrano, E., Somoza, L., Thomson, J.W. and Thomson, M.R.A., 2002, Geology and geomorphology of Deception Island. BAS GEOMAP Series, Sheet 6-a and 6-b, 1:25.000, with supplementary text. Cambridge: British Antarctic Survey, 77pp, 3 sheets
  38. Smellie, J.L., Pallas, R., Sàbat, F., and Zheng, X., 1996, Age and correlation of volcanism in central Livingston Island, South Shetland Islands: K-Ar and geochemical constraints. Jour. South Am. Earth Sci., 9, 265-272 https://doi.org/10.1016/0895-9811(96)00012-0
  39. Smellie, J.L., Pankhurst, R.J., Thomson, M.R.A., Davies, R.E.S., 1984, The geology of the South Shetland Islands, VI, Stratigraphy, geochemistry and evolution, Br. Antarct. Surv. Sci. Rep., 87, 85 pp
  40. Somoza, L., Martinez-Frias, J., Smellie, J.L., Rey, J., and Maestro, A., 2004, Evidence for hydrothermal venting and sediment volcanism discharged after recent shortlived volcanic eruptions at Deception Island, Bransfield Strait, Antarctica. Marine Geol., 203, 119-140 https://doi.org/10.1016/S0025-3227(03)00285-8
  41. Valencio, D.A., Mendia, J.E. and Vilas, J.F., 1979, Palaeomagnetism and K-Ar age of Mesozoic and Cenozoic igneous rocks from Antarctica. Earth Planet. Sci. Lett., 45, 61-68 https://doi.org/10.1016/0012-821X(79)90107-9
  42. Vaughan, A.P.M., Pankhurst, R.J., and Fanning, C.M., 2002, A mid-Cretaceous age for the Palmer Land event, Antarctiv Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes. Jour. Geol. Soc. London, 159, 113-116 https://doi.org/10.1144/0016-764901-090
  43. Zheng, X., Kamenov, B., Sang, H., and Monchev, P., 2003, New radiometric dating of dykes from the Hurd Peninsula, Livingston Island, South Shetland Islands. Jour. South Am. Earth Sci., 15, 925-934 https://doi.org/10.1016/S0895-9811(02)00146-3