Abstract
The East Taiwan Ophiolite (ETO) occurs as allochthonous fragments embedded in the Plio-Pleistocene Lichi Mélange in the Coastal Range of eastern Taiwan. It is probably the youngest among the known ophiolitic complexes of the world. The overall geochemical and isotopic characteristics of the representative rock types are very “oceanic” and strongly argue for a mid-ocean or marginal basin origin of the ETO. The best criteria include: (1) major element compositions; (2) REE distribution patterns; (3) Nd isotopic ratios (some have ɛNd≧+12); (4) Pb isotopic ratios; and (5) the presence and nature of the red shale. This conclusion is supported by previous studies of metamorphic evolution of the ETO.
The occurrence of both N- and P-type basalts in the ETO is firmly recognized for the first time by their REE distribution patterns. Neither type of basalt could be derived by fractional crystallisation from the other, nor by various degrees of partial melting from a common mantle source. Consequently, the genesis of basaltic magmas of the ETO has probably involved melting and mixing of a highly depleted asthenosphere and an enriched plume-type or hot-spot source.
Because of the young age of formation (about 15 Ma) and the very recent tectonosedimentary emplacement (olistostromal origin) through arc-continent collision (about 4–5 Ma), the ETO was most likely generated in the spreading center of a small ocean or marginal basin (the South China Sea).
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References
Armstrong RL (1971) Isotopic and chemical constraints on models of magma genesis in volcanic arcs. Earth Planet Sci Lett 12:137–142
Bence AE, Baylis DM, Bender JF, Grove TL (1979) Controls on the major and minor element chemistry of mid-ocean ridge basalts and glasses. In: Talwani M, Harrison CG, Hayes DE (eds) Deep Drilling Results in the Atlantic Ocean: Ocean Crust. Am Geophys Union Washington DC pp 331–341
Boynton WV, Starzyk PM, Schmidt RA (1976) Chemical evidence for the genesis of the ureilites, the achondrite Chassigny and the nakhlites. Geochim Cosmochim Acta 40:1439–1447
Catanzaro EJ, Murphy TJ, Shields WR, Garner EL (1968) Absolute isotopic abundance ratios of common, equal-atom and radiogenic lead isotope standards, J. Res Natl Bur Std A Phys Chem 72A:261–267
Chen, JH, Pallister JS (1981) Lead isotopic studies of the Samail Ophiolite, Oman. J. Geophys Res 86:2699–2708
Chi WR, Namson J, Suppe J (1981) Stratigraphic record of the plate interactions in Coastal Range, eastern Taiwan, Mem Geol Soc China, No. 4:155–194
Chou CL, Lo HJ, Chen JH, Juan VC (1978) Rare earth element and isotopic geochemistry of Kuanshan igneous complex, Taiwan, Proc Geol Soc China, No. 21:13–24
Cohen RS, O'Nions RK (1982) Identification of recycled continental material in the mantle from Sr, Nd and Pb isotope investigations. Earth Planet Sci Lett 61:73–84
Coleman RG (1977) Ophiolites: ancient oceanic lithosphere? Springer Berlin Heidelberg New York
Coleman RG (1981) Tectonic setting for ophiolite obduction in Oman, J Geophys Res 86:2497–2508
Coleman RG (1984) The diversity of ophiolites. Geol Mijnbouw 63:141–150
Coleman RG, Peterman ZE (1975) Oceanic plagiogranite, J Geophys Res 80:1099–1108
DePaolo DJ, Wasserburg GJ (1976) Nd isotopic variations and petrogenetic models. Geophys Res Lett 3:249–252
DePaolo DJ, Wasserburg GJ (1977) The sources of island arcs as indicated by Nd and Sr isotope studies. Geophys Res Lett 4:465–468
Dixon S, Rutherford MJ (1979) Plagiogranites as late-stage immiscible liquids in ophiolite and mid-ocean ridge suites: an experimental study. Earth Planet Sci Lett 45:45–60
Ernst WG, Liou JG (1985) Summary of oceanic metamorphism and inferred tectonic history of the East Taiwan Ophiolite. Ofioliti (in press)
Ewart A (1976) Mineralogy and chemistry of modern orogenic lavas — some statistics and implications. Earth Planet Sci Lett 31:417–432
Frey FA (1984) Rare earth element abundances in upper mantle rocks. In: Henderson P (ed) Rare Earth Element Geochemistry. Elsevier, Amsterdam, 153–203
Frey FA, Bryan WB, Thompson G (1974) Atlantic ocean floor: geochemistry and petrology of basalts from Legs 2 and 3 of the Deep Sea Drilling Project. J Geophys Res 79:5507–5527
Gass IG, Neary CR, Plant J, Robertson AHF, Simonian KO, Smewing JD, Spooner ETC, Wilson RAM (1975) Comments on “The Troodos ophiolite complex was probably formed in an island arc” by A. Miyashiro and subsequent correspondence by A. Hynes and A. Miyashiro. Earth Planet Sci Lett 25:236–238
Gerlach DC, Avé Lallemant HG, Leeman WP (1981a) An island arc origin for the Canyon Mountain ophiolite complex, eastern Oregon, USA Earth Planet Sci Lett 53:255–265
Gerlach DC, Leeman WP, Avé Lallemant HG (1981b) Petrology and geochemistry of plagiogranite in the Canyon Mountain Ophiolite, Oregon. Contrib Mineral Petrol 77:82–92
Goldstein SL, O'Nions RK (1981) Nd and Sr isotopic relationships in pelagic clays and ferromanganese deposits. Nature 291:324–327
Hamelin B, Dupré B, Allègre CJ (1984a) Lead-strontium isotopic variations along the East Pacific Rise and the Mid-Atlantic ridge: a comparative study. Earth Planet Sci Lett 67:340–350
Hamelin B, Dupré B, Allègre CJ (1984b) The lead isotope systematics of ophiolite complexes. Earth Planet Sci Lett 67:351–366
Hanson GN (1978) The application of trace elements to the petrogenesis of igneous rocks of granitic composition. Earth Planet Sci Lett, 38:26–43
Hawkesworth CJ (1982) Isotope characteristics of magmas erupted along destructive plate margins. In: Thorpe RS (ed) Andesites. Wiley, Chichester, pp 549–570
Hawkins Jr (1980) Petrology of back-arc basins and island arcs: their possible role in the origin of ophiolites. In: Panayiotou (ed) Ophiolites. Geol Surv Dept Nicosia, Cyprus, pp 244–254
Hart SR (1971) K, Rb, Cs, Sr and Ba contents and Sr isotope ratios of ocean floor basalts, Philos Trans R Soc Lond, A268:573–587
Hart SR, Erlank AJ, Kable EJD (1974) Sea floor alteration: some chemical and Sr isotopic effects. Contrib Mineral Petrol 44:219–230
Helz RT (1976) Phase relations of basalts in their melting ranges at \({\text{P}}_{{\text{H}}_{\text{2}} {\text{O}}}\)=5 Kb. Part II. melt compositions. J Petrol 17:139–193
Ho CS (1975) An istroduction to the geology of Taiwan: explanatory text of the geologic map of Taiwan. Ministry of Economic Affairs, Republic of China, Taipei
Ho CS (1982) Tectonic evolution of Taiwan: explanatory text of the tectonic map of Taiwan. Ministry of Economic Affairs, Republic of China, Tairpei
Hofmann AW, Hart SR (1978) An assessment of local and regional isotopic equilibrium in the mantle. Earth Planet Sci Lett 38:44–62
Hsu TL (1956) Geology of the Coastal Range, eastern Taiwan. Bull Geol Survey Taiwan, No. 8:39–63
Hsu TL (1976) The Lichi melange in the Coastal Range framework. Bull Geol Survey Taiwan No. 25:87–96
Huang TC, Chen MP, Chi WR (1979) Calcareous nannofossils from the red shale of the ophiolite-melange complex, eastern Taiwan. Mem Geol Soc China No. 3:131–138
Humphris SE (1984) The mobility of the rare earth elements in the crust. In: Henderson P (ed) Rare Earth Element Geochemistry. Elsevier, Amsterdam, pp 153–203
Jahn BM, Auvray B, Blais S, Capdevila R, Cornichet J, Vidal F, Hameurt J (1980a) Trace element geochemistry and petrogenesis of Finnish greenstone belts. J Petrol 21:201–244
Jahn BM, Bernard-Griffiths J, Charlot R, Cornichet J, Vidal F (1980b) Nd and Sr isotopic compositions and REE abundances of Cretaceous MORB (Holes 417D and 418A, Legs 51, 52 and 53). Earth Planet Sci Lett 48:171–184
Jahn BM, Glikson AY, Peucat JJ, Hickman AH (1981) REE geochemistry and isotopic data of Archean silicic volcanics and granitoids from the Pilbara Block, Western Australia: implications for the early crustal evolution. Geochim Cosmochim Acta 45:1633–1652
Juan VC (1964) East Taiwanian petrographic province. Proc Geol Soc China No 7:3–20
Juan VC (1975) Tectonic evolution of Taiwan. Tectonophysics 26:197–212
Juan VC, Lo HJ, Chen CH (1978) Petrochemistry and origin of taiwanite and dolerite, east Taiwan. In: Study and Essays in Commemoration of the Golden Jubilee of Academia Sinica, Taipei, pp 71–102
Juan VC, Lo HJ, Chen CH (1980) Genetic relationships and the emplacement of the exotic basic rocks enclosed in the Lichi mélange, east Coastal Range, Taiwan. Proc Geol Soc China, No. 23:56–68
Kay RW, Sun SS, Lee-Hu CN (1978) Pb and Sr isotopes in volcanic rocks from the Aleutian Islands and Probilof Islands, Alaska. Geochim Cosmochim Acta 42:263–273
Lanphere MA, Coleman RG, Hopson CA (1981) Sr isotopic tracer study of the Samail Ophiolite, Oman. J Geophys Res 86:2709–2720
Liou JG, Lan CY, Suppe J, Ernst WG (1977) The East Taiwan Ophiolite: its occurrence, petrology, metamorphism and tectonic setting. Mining Research and Service Organisation Special Report, No 1, 212 p, Taipei
Liou JG, Ernst WG (1979) Oceanic ridge metamorphism of the East Taiwan Ophiolite. Contrib Mineral Petrol 68:335–348
Ludden JN, Thompson G (1978) Behavior of rare earth element during submarine weathering of tholeiitic basalts. Nature 274:147–149
Ludden JN, Thompson G (1979) An evaluation of the behavior of the rare earth elements during weathering of sea floor basalts. Earth Planet Sci Lett 43:85–92
Masuda A, Nakamura N, Tanaka T (1973) Fine structures of mutually normalized rare earth patterns of chondrites. Geochim Cosmochim Acta 37:239–248
McCulloch MT, Gregory RT, Wasserburg GJ, Taylor Jr HP (1980) A Nd, Sr and O isotopic study of the Cretaceous Samail ophiolite and implications for the petrogenesis and seawater-hydrothermal alteration of oceanic crust. Earth Planet Sci Lett 46:201–211
McCulloch MT, Perfit MR (1981) 143Nd/144Nd, 87Sr/86Sr and trace element constraints on the petrogenesis of Aleutian island arc magmas. Earth Planet Sci Lett 56:167–179
McCulloch MT, Cameron WE (1983) Nd-Sr isotopic study of primitive lavas from the Troodos ophiolite, Cyprus: evidence for a subduction-related setting. Geology 11:727–731
Meijer A (1976) Pb and Sr isotopic data bearing on the origin of volcanic rocks from the Mariana island arc system, Geol Soc Am Bull 87:1358–1369
Melson WG, Vallier TL, Wright TL, Byerly G, Nelsen J (1976) Chemical diversity of abyssal volcanic glass erupted along Pacific, Atlantic and Indian Ocean sea-floor spreading centers. In: The Geophysics of the Pacific Ocean Basin and its Margin. Am Geophys Union Monogr 19:351–367
Miyashiro A (1973) The Troodos ophiolitic complex was probably formed in an island arc. Earth Planet Sci Lett 19:218–224
Moores EM (1982) Origin and emplacement of ophiolites. Rev Geophys Space Phys 20:735–760
Moores EM, Vine FJ (1971) Troodos massif, Cyprus and other ophiolites as oceanic crust: evaluation and implications. Phil Trans R Soc London A268:443–466
Moores EM, Robinson PT, Malpas J, Xenophonotos C (1984) Model for the origin of the Troodos massif, Cyprus, and other mideast ophiolites. Geology 12:500–503
Noiret G, Montigny R, Allègre CJ (1981) Is the Vourinos complex an island arc ophiolite? Earth Planet Sci Lett 56:375–386
O'Nions RK, Hamilton PJ, Evensen NM (1977) Variations in 143Nd/144Nd and 87Sr/86Sr ratios in oceanic basalts. Earth Planet Sci Lett 34:13–22
Page BM, Suppe J (1981) The Pliocene Lichi melange of Taiwan: its plate tectonic and olistostromal origin. Am J Sci 281:193–227
Pallister JS, Knight RJ (1981) Rare earth element geochemistry of the Samail Ophiolite near Ibra, Oman. J Geophys Res 86:2673–2697
Pearce JA (1982) Trace element characteristics of lavas from destructive plate boundaries. In: Andesites R.S. Thorpe (ed); Wiley Chichester, pp 525–548
Pearce JA, Cann JR (1973) Tectonic setting of basic volcanic rocks determined using trace element analyses. Earth Planet Sci Lett 19:290–300
Pearce JA, Alabaster T, Shelton AW, Searle MP (1981) The Oman ophiolite as a Cretaceous arc-basin complex: evidence and implications. Phil Trans R Soc London A300:299–317
Perfit MR, Gust DA, Bence AE, Arculus RJ, Taylor SR (1980) Chemical characteristics of island arc basalts: implications for mantle sources. Chem Geol 30:227–256
Piepgras DJ, Wasserburg GJ, Dasch EJ (1979) The isotopic composition of Nd in different ocean masses. Earth Planet Sci Lett 45:223–236
Rautenschlein M, Jenner GA, Hertogen J, Hofmann AW, Kerrich R, Schmincke HU, White WM (1985) Isotopic and trace element composition of volcanic glasses from the Akaki Canyon, Cyprus: implications for the origin of the Troodos Ophiolite. Earth Planet Sci Lett (in press)
Robinson PT, Melson WG, O'Hearn T, Schmincke HU (1983) Volcanic glass compositions of the Troodos ophiolite, Cyprus. Geology 11:400–404
Schmincke HU, Rautenschlein M, Robinson PT, Mehegan JM (1983) Troodos extrusive series of Cyprus: a comparison with oceanic crust. Geology 11:405–409
Shido F, Miyashiro A, Ewing M (1971) Crystallization of abyssal tholeiites. Contrib Minerl Petrol 31:251–266
Shih CY, Sun SS, Liou JG, Yen TP, Rhodes JM, Hsu IC (1972) Petrology and geochemistry of the Coastal Range ophiolite of Taiwan. Am Geophys Union Trans 53:535 (abstract)
Spulber SD, Rutherford MJ (1983) The origin of rhyolite and plagiogranite in oceanic crust: an experimental study. J Petrol 24:1–25
Staudigel H, Frey FA, Hart SR (1979) Incompatible trace element geochemistry and 87Sr/86Sr in basalts and corresponding glasses and palagonites, Init Rept DSDP 51, 52, 53 (eds T. Donnelly, J. Franchetau et al.) US Govt Printing Office, Washington DC, Vol 2: 137–1143
Stern CR (1979) Open and closed system igneous fractionation within two Chilean ophiolites and the tectonic implication. Contrib Mineral Petrol 68:243–258
Sun SS (1980) Lead isotopic study of young volcanic rocks from mid-ocean ridges, ocean islands and island arcs. Phils Trans R Soc Lond A297:409–445
Sun SS, Nesbitt RW, Sharaskin AY (1979) Geochemical characteristics of mid-ocean ridge basalts. Earth Planet Sci Lett 44:119–138
Suppe J, Liou JG, Ernst WG (1981) Paleogeographic origins of the Miocene East Taiwan Ophiolite. Am J Sci 281:228–246
Tarney J, Saunders AD, Mattey DP, Wood DA, Marsh NG (1981) Geochemical aspects of back-arc spreading in the Scotia Sea and western Pacific. Phil Trans R Soc London A300:263–285
Tatsumoto M (1969) Lead isotopes in volcanic rocks and possible ocean floor thrusting beneath island arcs. Earth Planet Sci Lett 6:369–376
Tatsumoto M (1978) Isotopic composition of lead in oceanic basalts and its implication to mantle evolution. Earth Planet Sci Lett 38:63–87
Tual E, Jahn BM, Bougault H, Joron JL (1985) Geochemistry of basalts from Hole 504B, Leg 83, Costa Rica Rift. Init Rept DSDP, Washington DC, US Govt Printing Office 83:201–214
Vidal Ph, Clauer N (1981) Pb and Sr isotopic systematics of some basalts and sulfides from the East Pacific Rise at 21°N (Project RITA). Earth Planet Sci Lett 55:237–246
Wang Y (1966) Some geologic observations in the Coastal Range, eastern Taiwan. Proc Geol Soc China No. 9:86–93
Wang CS (1976) The Lichi Formation of the Coastal Range and arc-continental collision in eastern Taiwan. Geol Survey Taiwan Bull No. 25:73–86
Wänke H, Baddenhausen H, Spettel B, Teschke F, Quijano-Rico M, Dreibus G, Palme H (1972) The chemistry of Havero ureilite. Meteoritics 7:579–589
White WM (1985) Sources of oceanic basalts: radiogenic isotopic evidence. Geology 13:115–118
White WM, Patchett J (1984) Hf-Nd-Sr isotopes and incompatible element abundances in island arcs: implications for magma origins and crust-mantle evolution. Earth Planet Sci Lett 67:167–185
Whitford DJ (1975) Strontium isotopic studies of the volcanic rocks of the Sunda arc, Indonesia, and their petrogenetic implications. Geochim Cosmochim Acta 39:1287–1302
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Jahn, Bm. Mid-ocean ridge or marginal basin origin of the East Taiwan Ophiolite: chemical and isotopic evidence. Contr. Mineral. and Petrol. 92, 194–206 (1986). https://doi.org/10.1007/BF00375293
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DOI: https://doi.org/10.1007/BF00375293