Abstract
The graywackes of Paleozoic turbidite sequences of eastern Australia show a large variation in their trace element characteristics, which reflect distinct provenance types and tectonic settings for various suites. The tectonic settings recognised are oceanic island arc, continental island arc, active continental margin, and passive margins. Immobile trace elements, e.g. La, Ce, Nd, Th, Zr, Nb, Y, Sc and Co are very useful in tectonic setting discrimination. In general, there is a systematic increase in light rare earth elements (La, Ce, Nd), Th, Nb and the Ba/Sr, Rb/Sr, La/Y and Ni/Co ratios and a decrease in V, Sc and the Ba/Rb, K/Th and K/U ratios in graywackes from oceanic island arc to continental island arc to active continental margin to passive margin settings. On the basis of graywacke geochemistry, the optimum discrimination of the tectonic settings of sedimentary basins is achieved by La-Th, La-Th-Sc, Ti/Zr-La/Sc, La/Y-Sc/Cr, Th-Sc-Zr/10 and Th-Co-Zr/10 plots. The analysed oceanic island arc graywackes are characterised by extremely low abundances of La, Th, U, Zr, Nb; low Th/U and high La/Sc, La/Th, Ti/Zr, Zr/Th ratios. The studied graywackes of the continental island arc type setting are characterised by increased abundances of La, Th, U, Zr and Nb, and can be identified by the La-Th-Sc and La/Sc versus Ti/Zr plots. Active continental margin and passive margin graywackes are discriminated by the Th-Sc-Zr/10 and Th-Co-Zr/10 plots and associated parameters (e.g. Th/Zr, Th/Sc). The most important characteristic of the analysed passive margin type graywackes is the increased abundance of Zr, high Zr/Th and lower Ba, Rb, Sr and Ti/Zr ratio compared to the active continental margin graywackes.
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References
Bailey JC (1981) Geochemical criteria for a refined tectonic discrimination of orogenic andesites. Chem Geol 31:139–154
Bavinton OA, Taylor SR (1980) Rare earth element abundances in Archean metasediments from Kambalda, Western Australia. Geochim Cosmochim Acta 44:639–648
Bhatia MR (1981) Petrology, geochemistry and tectonic setting of some flysch deposits. Ph D Thesis. Australian National University, Canberra
Bhatia MR (1983) Plate tectonics and geochemical composition of sandstones. J Geol 91:611–627
Bhatia MR (1985) Rare earth element geochemistry of Australian Paleozoic graywackes and mudrocks: provenance and tectonic control. Sed Geol 45:97–113
Bhatia MR, Taylor SR (1981) Trace element geochemistry and sedimentary provinces: a study from the Tasman Geosyncline, Australia. Chem Geol 33:115–126
Bouma AH (1962) Sedimentology of some flysch deposits, Elsevier, Amsterdam
Condie KC (1967) Geochemistry of early Precambrian graywackes from Wyoming. Geochim Cosmochim Acta 31:2135–2149
Condie KC, Mackie JE, Reimer TO (1970) Petrology and geochemistry of Early Precambrian graywackes from the Fig Tree Group, South Africa. Geol Soc Am Bull 81:2759–2776
Crook KAW (1974) Lithogenesis and geotectonics: the significance of compositional variations in flysh arenites (graywackes). In: Dott RH and Shaver RH (Eds), Modern and Ancient geosynclinal sedimentation. SEPM Spec Pub 19:304–310
Crook KAW (1980a) Fore-arc evolution and continental growth: a general model. J Struct Geol 2:289–303
Crook KAW (1980b) Fore-arc evolution in the Tasman Geosyncline: the origin of the southeast Australian continental crust. J Geol Soc Aust 27:215–232
Dickinson WR (1970) Interpreting detrital modes of graywacke and arkose. J Sed Petrol 40:695–707
Dickinson WR, Suczek CA (1979) Plate tectonics and sandstone compositions. Am Assoc Pet Geol Bull 63:82–86
Dickinson WR, Valloni R (1980) Plate settings and provenance of sands in modern ocean basins. Geology 8:82–86
Ewart A (1976) Mineralogy and chemistry of modern orogenic lavas some statistics and implications. Earth Plan Sci Lett 31:417–432
Falvey DA (1974) The development of continental margins in plate tectonic theory. J Aust Pet Expl Assoc 14:95–106
Garrels RM, Mackenzie FT (1971) Evolution of sedimentary rocks. Norton, New York, p 387
Holland HD (1978) The chemistry of the atmosphere and oceans. Wiley, New York, p 351
Jenner GA, Fryer BJ, McLennan SM (1981) Geochemistry of the Archean Yellowknife Supergroup. Geochim Cosmochim Acta 45:1111–1129
Krönberg BI, Fyfe WS, Leonardos OH, Santos AM (1979) The chemistry of some Brazilian oils: element mobility during intense weathering. Chem Geol 24:211–229
Maynard JB, Valloni R, Yu HS (1982) Composition of modern deep-sea sands from arc-related basins. In: Leggett JK (ed), Trench and Fore-arc sedimentation. Geol Soc London Spec Pub 10:551–561
McLennan SM (1984) Petrological characteristics of Archean graywackes. J Sed Petrol 54:889–898
McLennan SM, Taylor SR, Eriksson KA (1983a) Geochemistry of Archean shales from the Pilbara Supergroup, Western Australia. Geochim Cosmochim Acta 74:1211–1222
McLennan SM, Taylor SR, Kröner A (1983b) Geochemical evolution of Archean shales from South Africa I. The Swaziland and Pongola Supergroups. Precamb Res 22:93–124
McLennan SM, Taylor SR, McGregor VR (1984) Geochemistry of Archean sedimentary rocks from West Greenland. Geochim Cosmochim Acta 48:1–13
Mitchell AHG, Reading HG (1969) Continental margins, geosyclines and ocean floor spreading. J Geol 77:629–646
Miyashiro A (1974) Volcanic rock series in island arcs and active continental margins. Am J Sci 274:321–355
Nance WB, Taylor SR (1977) Rare earth element patterns and crustal evolution II: Archean sedimentary rocks from Kalgoorlie, Australia. Geochim Cosmochim Acta 41:225–231
Naqvi SM, Hussain SM (1972) Petrochemistry of early Precambrian metasediments from the central part of the Chitaldrug Schist Belt, Mysore, India. Chem Geol 10:109–135
Nesbitt HW, Markovics G, Price RC (1980) Chemical processes affecting alkalis and alkaline earths during continental weathering. Geochim Cosmochim Acta 44:1659–1666
Nie NH, Hull CJ, Jenkins JG, Steinbrenmer K, Bent DM (1975) SPSS Statistical package for the Social Sciences. McGraw Hill, New York, p 675
Norman NB (1974) Improved techniques for selective staining of feldspar and other minerals using amaranth. US Geol Surv J Res 2:73–79
Norrish K, Chappell BW (1967) X-ray fluorescence spectrography. In: Zussman J (ed) Physical methods in determinative mineralogy. Academic Press, Oxford 161–214
Pearce JA, Cann JR (1973) Tectonic setting of basic volcanic rocks determined using trace element analyses. Earth Planet Sci Lett 19:290–300
Peterman ZE, Coleman RC, Bunker CM (1981) Provenance of Eocene graywackes of the Flournoy Formation near Aness, Oregon — a geochemical approach. Geology 9:81–86
Schwab FL (1975) Framework mineralogy and chemical composition of continental margin-type sandstone. Geology 3:487–490
Taylor SR, McLennan SM (1981) The composition and evolution of the continental crust: rare earth element evidence from sedimentary rocks. Phil Trans R Soc Lond Ser A3:381–339
Valloni R, Maynard JB (1981) Detrital modes qf recent deep-sea sands and their relations to tectonic setting: a first approximation. Sedimentology 28:75–83
Valloni R, Mezzadri G (1984) Compositional suites of terrigenous deep-sea sands of the present margins. Sedimentology 31:353–364
Wildeman TR, Condie KC (1973) Rare earths in Archean graywackes from Wyoming and from the Fig Tree Group, South Africa. Geochim Cosmochim Acta 37:439–453
Winchester JA, Floyd PA (1977) Geochemical discrimination of different magma series and the differentiation products using immobile elements. Chem Geol 20:325–343
Wood DA, Joson JL, Treuil M (1979) A re-appraisal of the use of trace elements to classify and discriminate between magma series erupted in different tectonic settings. Earth Planet Sci Lett 45:326–336
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Bhatia, M.R., Crook, K.A.W. Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins. Contr. Mineral. and Petrol. 92, 181–193 (1986). https://doi.org/10.1007/BF00375292
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DOI: https://doi.org/10.1007/BF00375292