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Possible sources of clastic sediment in the Late Proterozoic Torridon Group, from geochemical mass balance

Published online by Cambridge University Press:  03 November 2011

A. D. Stewart
Affiliation:
Postgraduate Research Institute for Sedimentology, University of Reading, Reading RG6 2AB

Abstract

Equations are derived which link the content of relatively insoluble components Si, Al, Fe and K in source rock and derived alluvial sediment. The equations also involve the ratio of specific suspended load to dissolved load and specific bed load to suspended load (Tb/Ts) for the rivers which deposited the sediments. These ratios are generally unknown, but by analogy with modern rivers are taken to occupy the ranges and 0 ≦ Tb/Ts≦1. This is sufficient to put close limits on the possible composition of the source rock. The equations suggest that clastic sediment forming the Late Proterozoic Torridon Group of Scotland was derived from sediments or metasediments, rather than from average upper continental crust, granitoids or gneisses like those presently exposed nearby.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1994

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References

Awwiller, D. N. 1993. Illite-smectite formation and potassium mass transfer during burial diagenesis of mudrocks: a study from the Texas Gulf coast Paleocene-Eocene. J SEDIMENT PETROL 63, 501–12.Google Scholar
Cobbing, E. J. & Pitcher, W. S. 1972. The coastal batholith of central Peru. J GEOL SOC LONDON 128, 421–60.CrossRefGoogle Scholar
Gluyas, J. & Coleman, M. 1992. Material flux and porosity changes during sediment diagenesis. NATURE 356, 52–4.CrossRefGoogle Scholar
Gromet, L. P., Dymek, R. F., Haskin, L. A. & Korotev, R. L. 1984. The “North American shale composite”: its compilation, major and trace element characteristics. GEOCHIM COSMOCHIM ACTA 48, 2469–82.CrossRefGoogle Scholar
Holland, H. D. 1984. The chemical evolution of the atmosphere and oceans, 1582. Princeton University Press.Google Scholar
Kasting, J. F. 1993. Earth's early atmosphere. SCIENCE 259, 920–26.CrossRefGoogle ScholarPubMed
Le Maitre, R. W. 1976. The chemical variability of some common igneous rocks. I PETROL 17, 589637.Google Scholar
Meade, R. H. 1988. Movement and storage of sediment in river systems. In Lerman, A. & Meybeck, M. (eds) Physical and chemical weathering in geochemical cycles, 165–79. Dordrecht: Kluwer.CrossRefGoogle Scholar
Meybeck, M. 1979. Concentrations des eaux fluviales en elements majeurs et apports en solution aux oceans. REV GEOL DYN GEOGR PHYS 21, 215–46.Google Scholar
Meybeck, M. 1988. How to establish and use world budgets of riverine materials. In Lerman, A. & Meybeck, M. (eds) Physical and chemical weathering in geochemical cycles, 247–72. Dordrecht: Kluwer.CrossRefGoogle Scholar
Milliken, K. L., Mack, L. E. & Land, L. S. 1994. Elemental mobility in sandstones during burial: whole-rock chemical and isotopic data, Frio Formation, south Texas. J SEDIMENT RES A64, 788–96.Google Scholar
Moorbath, S., Stewart, A. D., Lawson, D. E. & Williams, G. E. 1967. Geochronological studies on the Torridonian sediments of north-west Scotland. SCOTT J GEOL 3, 389412.CrossRefGoogle Scholar
Morton, A. C. & Taylor, P. N. 1991. Geochemical and isotopic constraints on the nature and age of basement rocks from Rockall Bank, NE Atlantic. J GEOL SOC LONDON 148, 631–4.CrossRefGoogle Scholar
Nicholson, P. G. 1993. A basin reappraisal of the Proterozoic Torridon Group, northwest Scotland. In Frostick, L. E. & Steel, R. J. (eds) Tectonic controls and signatures in sedimentary successions. SPEC PUBL INT ASSOC SEDIMENTOL 20, 183202.Google Scholar
Nockolds, S. R. 1954. Average chemical compositions of some igneous rocks. BULL GEOL SOC AM 65, 1007–32.CrossRefGoogle Scholar
Poldervaart, A. 1955. Chemistry of the Earth's crust. In Poldervaart, A. (ed.) Crust of the Earth. GEOL SOC AM SPEC PAP 62, 119–44.Google Scholar
Peach, B. N., Home, J., Gunn, W., Clough, C. T, Hinxman, L. W. & Teall, J. J. H. 1907. The geological structure of the north-west highlands of Scotland. MEM GEOL SURV UK 1668.Google Scholar
Rodd, J. A. 1983. The sedimentology and geochemistry of the type Diabaig Formation in the Upper Proterozoic Torridon Group of Scotland (PhD thesis, University of Reading, UK.)Google Scholar
Rodd, J. A. & Stewart, A. D. 1992. Geochemistry, weathering and diagenesis of the Diabaig Formation (Torridon Group) in NW Scotland. SCOTT J GEOL 28, 2735.CrossRefGoogle Scholar
Ronov, A. B. & Migdisov, A. A. 1971. Geochemical history of the crystalline basement and the sedimentary cover of the Russian and North American platforms. SEDIMENTOLOGY 16, 137–85.Google Scholar
Stewart, A. D. 1988. The Sleat and Torridon Groups. In Winchester, J. A. (ed.) Later Proterozoic stratigraphy of the northern Atlantic regions, 104–12. Glasgow: Blackie.CrossRefGoogle Scholar
Stewart, A. D. 1993. The ratio of mechanical to chemical denudation in alluvial systems, derived from geochemical mass balance. TRANS R SOC EDINBURGH: EARTH SCI 84, 73–8.CrossRefGoogle Scholar
Stewart, A. D. & Donnellan, N. C. B. 1992. Geochemistry and provenance of red sandstones in the Upper Proterozoic Torridon Group in Scotland. SCOTT J GEOL 28, 143–53.Google Scholar
Taylor, S. R. & McLennan, S. M. 1985. The continental crust: its composition and evolution, 1312. Oxford: Blackwell.Google Scholar
Van de Kamp, P. C. & Leake, B. E. 1985. Petrography and geochemistry of feldspathic and mafic sediments of the northeastern Pacific margin. TRANS R SOC EDINBURGH: EARTH SCI 76, 411–49.Google Scholar
Williams, G. E. 1969. Petrography and origin of pebbles from Torridonian strata (late Precambrian), northwest Scotland. In Kay, M. (ed.) North Atlantic—geology and continental drift, MEM AM ASSOC PETROL GEOL 12, 609–29.Google Scholar
Winchester, J. A. & Glover, B. W. 1988. The Grampian Group, Scotland. In Winchester, J. A. (ed.) Later Proterozoic stratigraphy of the northern Atlantic regions, 146–61. Glasgow: Blackie.CrossRefGoogle Scholar
Winchester, J. A. & Max, M. D. 1988. Pre-Dalradian rocks in NW Ireland. In Winchester, J. A (ed.) Later Proterozoic stratigraphy of the northern Atlantic regions, 131–45. Glasgow: Blackie.CrossRefGoogle Scholar
Winchester, J. A., Max, M. D. & Long, C. B. 1988. The Erris Group, Ireland. In Winchester, J. A (ed.) Later Proterozoic stratigraphy of the northern Atlantic regions, 162–76. Glasgow: Blackie.CrossRefGoogle Scholar