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Role of the Midland Valley of Scotland in the Caledonian orogeny

Published online by Cambridge University Press:  03 November 2011

B. J. Bluck
B. J. Bluck
Affiliation:
Department of Geology, University of Glasgow, Glasgow G12 8QQ, Scotland.
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Abstract

The Midland Valley of Scotland was an arc–interarc region during most of Ordovician—Devonian time. This arc terrane extends beneath the allochthonous Southern Uplands and probably beneath the southern Highlands. Models of Caledonian plate tectonism which regard the Midland Valley as a fore-arc basin are rejected principally on the grounds that (i) the Ordovician sequence at Girvan, in the very SW of the Midland Valley, was generated in a proximal fore-arc basin to the immediate S of a contemporaneous plutonic–volcanic arc, and (ii) the source for Silurian sediments in the southern part of the Midland Valley could not have been a rising trench-slope-break, but igneous basement and conglomerates with clasts of metamorphic basement, i.e. the southward extension of the Midland Valley.

The Midland Valley arc first comprised mainly plutonic rocks, some of which may have been basic but most of which were certainly granitic. Little is known of the ages of volcanic clasts in Silurian conglomerates (this time may have been a period of relative volcanic quiescence), but the Silurian–Devonian sequence is considered to have formed in an interarc basin which, like many other basins of this kind, began as marine (Early Silurian) and ended as fluvial (Devonian). At this final Silurian–Devonian stage, the Midland Valley arc was dominated by effusive rocks which made a substantial contribution to the sediments.

In this interpretation, the present Old Red Sandstone volcanic rocks are seen as the final stage of a volcanic arc which occupied the position of the present Midland Valley from at least Llanvirn to Early Devonian time.

Keywords

allochthonousarcCockburnlandDevonianfore-arcinterarcOrdovicianSilurianSouthern Uplandstrench-slope-break.
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 74 , Issue 3 , 1983 , pp. 119 - 136
Copyright
Copyright © Royal Society of Edinburgh 1983

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References

7. References

Allan, D. A. 1928. The geology of the Highland Border from Tayside to Noranside. TRANS R SOC EDINBURGH 56, 57–88.CrossRefGoogle Scholar
Allan, D. A. 1940. The geology of the Highland Border from Glen Almond to Glen Artney. TRANS R SOC EDINBURGH 60, 171–93.CrossRefGoogle Scholar
Barrett, T. J., Jenkyns, H. C., Leggett, J. K. & Robertson, A. H. F. 1982. Comment and reply on ‘Age and origin of Ballantrae ophiolite and its significance to the Caledonian orogeny and the Ordovician time scale’. GEOLOGY 9, 331–3.2.0.CO;2>CrossRefGoogle Scholar
Blissenbach, E. 1954. Geology of alluvial fans in semi-arid regions. BULL GEOL SOC AM 65, 175–90.CrossRefGoogle Scholar
Bluck, B. J. 1964. Sedimentation of an alluvial fan in Southern Nevada. J SEDIMENT PETROL 34, 395–400.Google Scholar
Bluck, B. J. 1967. Deposition of some Upper Old Red Sandstone conglomerates in the Clyde area: A study in the significance of bedding. SCOTT J GEOL 3, 139–67.CrossRefGoogle Scholar
Bluck, B. J. 1969. Old Red Sandstone and other Palaeozoic conglomerates of Scotland. In Kay, M. (ed.) North Atlantic—geology and continental drift, 711–23. AM ASSOC PETROL GEOL MEM 12.Google Scholar
Bluck, B. J. 1978. Sedimentation in a late orogenic basin: the Old Red Sandstone of the Midland Valley of Scotland. In Bowes, D. R. & Leake, B. E. (eds) Crustal evolution in northwestern Britain and adjacent regions, 249–78. GEOL J SPEC ISSUE 10.Google Scholar
Bluck, B. J. 1982. Hyalotuff deltaic deposits in the Ballantrae ophiolite of SW Scotland: evidence for crustal position of lava sequence. TRANS R SOC EDINBURGH EARTH SCI 72, 217–28.CrossRefGoogle Scholar
Bluck, B. J. & Halliday, A. N. 1982. Comment and reply on ‘Age and origin of Ballantrae ophiolite and its significance to the Caledonian orogeny and the Ordovician time scale’. GEOLOGY 9, 331–3.2.0.CO;2>CrossRefGoogle Scholar
Bluck, B. J., Halliday, A. N., Aftalion, M. & MacIntyre, R. M. 1980. Age and origin of Ballantrae ophiolite and its significance to the Caledonian orogeny and Ordovician time scale. GEOLOGY 8, 492–5.2.0.CO;2>CrossRefGoogle Scholar
Bowes, D. R. 1980. The absolute time-scale and subdivision of Precambrian rocks in northwestern Britain. In Mitrofanov, F.P. (ed.) Principles and criteria of subdivision of Precambrian in mobile zones, 32–44. Leningrad: Nauka.Google Scholar
Bull, W. B. 1964. Geomorphology of regimented alluvial fans in western Fresno County, California. PROF PAP U S GEOL SURV 437A.Google Scholar
Bussell, M. A. 1983. Timing of tectonic and magmatic events in the central Andes of Peru. J GEOL SOC LONDON 140, 279–86.CrossRefGoogle Scholar
Cas, R. 1979. Mass-flow arenites from a Palaeozoic inter-arc basin, New South Wales, Australia: mode and environment of emplacement. J SEDIMENT PETROL 49, 29–44.Google Scholar
Cocks, L. R. M., Holland, C. H., Rickards, B. & Strachan, I. 1971. A correlation of Silurian rocks in the British Isles. J GEOL SOC LONDON 127, 103–36.CrossRefGoogle Scholar
Cocks, L. R. M. & Toghill, P. 1973. The biostratigraphy of the Silurian rocks of the Girvan District, Scotland. J GEOL SOC LONDON 129, 209–43.CrossRefGoogle Scholar
Cole, J. W. 1979. Structure, petrology and genesis of Cenozoic volcanism, Taupo volcanic zone, New Zealand—a review. J GEOL GEOPHYS N Z 22, 631–57.CrossRefGoogle Scholar
Curry, G. B., Ingham, J. K., Bluck, B. J. & Williams, A. 1982. The significance of a reliable Ordovician age for some Highland Border rocks in Central Scotland. J GEOL SOC LONDON 139, 451–4.CrossRefGoogle Scholar
Dewey, J. F. 1969. Evolution of the Appalachian/Caledonian orogen. NATURE 222, 124–9.CrossRefGoogle Scholar
Dewey, J. F. 1971. A model for the Lower Palaeozoic evolution of the southern margin of the southern Caledonides of Scotland and Ireland. SCOTT J GEOL 7, 219–40.CrossRefGoogle Scholar
Dickin, A. P., Moorbath, S. and Welke, H. I. 1981. Isotope, trace element and major element geochemistry of Tertiary igneous rocks, Isle of Arran, Scotland. TRANS R SOC EDINBURGH EARTH SCI 72, 159–70.CrossRefGoogle Scholar
Dickinson, W. R. 1973. Widths of modern arc–trench gaps proportional to past duration of igneous activity in associated magmatic arcs. J GEOPHYS RES 78, 3376–89.CrossRefGoogle Scholar
Dickinson, W. R. & Seely, D. R. 1979. Structure and stratigraphy of fore-arc regions. BULL AM ASSOC PETROL GEOL 63, 2–31.Google Scholar
Eckford, R. J. A. & Ritchie, N. 1931. The lavas of Tweeddale and their position in the Caradocian sequence. SUM PROG GEOL SURV G B (for 1930), 46–57.Google Scholar
Floyd, J. D. 1982. Stratigraphy of a flysch succession: the Ordovician of W Nithsdale, SW Scotland. TRANS R SOC EDINBURGH EARTH SCI 73, 1–9.CrossRefGoogle Scholar
Francis, E. H., Forsyth, I. H., Read, W. A. & Armstrong, M. 1970. The geology of the Stirling district. MEM GEOL SURV U K.Google Scholar
Gill, J. B. 1981. Orogenic andesites and plate tectonics. Berlin: Springer.CrossRefGoogle Scholar
Griffiths, J. C. 1967. Scientific method in the analysis of sediments. New York: McGraw-Hill.Google Scholar
Hall, J., Powell, D. W., Warner, M. R., El-Isa, Z. M. H., Adesanya, O. & Bluck, B. J. 1983. Seismological evidence of shallow crystalline basement in the Southern Uplands of Scotland. NATURE 305, 418–20.CrossRefGoogle Scholar
Hamilton, W. 1979. Tectonics of Indonesia. PROP PAP U S GEOL SURV 1078.Google Scholar
Harland, W. B., Cox, A. V., Llewellyn, P. G., Pickton, C. A. G., Smith, A. G. & Walters, R. 1982. A geologic time scale. Cambridge: Cambridge University Press.Google Scholar
Harper, C.T. 1967. The geological interpretation of potassium–argon ages of metamorphic rocks from the Scottish Caledonides. SCOTT J GEOL 3, 46–66.CrossRefGoogle Scholar
Hepworth, B.C., Oliver, G. J. H. & McMurtry, M. J. 1982. Sedimentology, volcanism, structure and metamorphism of the northern margin of a Lower Palaeozoic accretionary complex; Bail Hill—Abington area of the Southern Uplands of Scotland. In Leggett, J. K. (ed.) Trench–fore-arc geology, 521–34. GEOL SOC LONDON SPEC PUBL 10.Google Scholar
Hooke, R. Le B. 1968. Steady-state relationships on arid regions alluvial fans in closed basins. AM J SCI 266, 609–29.CrossRefGoogle Scholar
Ingham, J. K. 1978. Geology of a continental margin 2: middle and late Ordovician transgression, Girvan. In Bowes, D. R. & Leake, B.E., (eds) Crustal evolution in northwestern Britain and adjacent regions, 163–76. GEOL J SPEC ISSUE 10.Google Scholar
Kelling, G. 1962. The petrology and sedimentation of Upper Ordovician rocks in the Rhinns of Galloway, south-west Scotland. TRANS R SOC EDINBURGH 65, 107–37.CrossRefGoogle Scholar
Kelling, G. & Holroyd, J. 1978. Clast size, shape and composition in some ancient and modern fan gravels. In Stanley, D. J. and Kelling, G. (eds) Sedimentation in submarine canyons, fans and trenches. Stroudsburg: Dowden, Hutchinson & Ross.Google Scholar
Kokelaar, P.H. 1982. Fluidization of wet sediments during emplacement and cooling of various igneous bodies. J GEOL SOC LONDON 139, 21–33.CrossRefGoogle Scholar
Kuenen, P. H. 1956. Experimental abrasion of pebbles: 2. rolling by current. J GEOL 64, 336–68.CrossRefGoogle Scholar
Lambert, R. St J. & McKerrow, W. S. 1976. The Grampian Orogeny. SCOTT J GEOL 12, 271–92.CrossRefGoogle Scholar
Leeder, M. R. 1982. Upper Palaeozoic basins of the British Isles—Caledonide inheritance versus Hercynian plate margin processes. J GEOL SOC LONDON 139, 479–91.CrossRefGoogle Scholar
Leggett, J. K. 1980. The sedimentological evolution of a Lower Palaeozoic accretionary fore-arc in the Southern Uplands of Scotland. SEDIMENTOLOGY 27, 401–17.CrossRefGoogle Scholar
Leggett, J. K., McKerrow, W. S. & Casey, D. M. 1982. The anatomy of a Lower Palaeozoic accretionary fore-arc: the Southern Uplands of Scotland. In Leggett, J. K. (ed.) Trench–fore-arc geology, 495–520. GEOL SOC LONDON SPEC PUBL 10.Google Scholar
Leggett, J. K., McKerrow, W. S., Morris, J. H., Oliver, G. J. H. & Phillips, W. E. A. 1979. The northwestern margin of the Iapetus Ocean. In Harris, A. L., Holland, C. H. & Leake, B.E. (eds) The Caledonides of the British Isles—reviewed, 499–511. GEOL SOC LONDON SPEC PUBL 8.Google Scholar
Londsdale, P. 1978. Ecuadorial subduction system. BULL AM ASSOC PETROL GEOL 62, 2454–77.Google Scholar
Longman, C. D. 1980. Age and affinity of granitic detritus in Lower Palaeozoic conglomerates, S. W. Scotland: implications for Caledonian evolution. Unpublished Ph.D. Thesis, Glasgow University.Google Scholar
Longman, C. D., Bluck, B. J. & van Breemen, O. 1979. Ordovician conglomerates and the evolution of the Midland Valley. NATURE 280, 578–81.CrossRefGoogle Scholar
Longman, C. D., Bluck, B. J., van Breemen, O. & Aftalion, M. 1982. Ordovician conglomerates: constraints on the timescale. In Odin, G. S. (ed.) Numerical dating in stratigraphy, 807–9. New York: Wiley.Google Scholar
McGiven, A. 1967. Sedimentation and provenance of post-Valentian conglomerates up to and including the basal conglomerate of the Lower Old Red Sandstone in the southern part of the Midland Valley of Scotland. Unpublished Ph.D. Thesis, Glasgow University.Google Scholar
McKerrow, W. S., Leggett, J. K. & Eales, M. H. 1977. Imbricate thrust model of the Southern Uplands of Scotland. NATURE 267, 237–9.CrossRefGoogle Scholar
McKerrow, W. S., Lambert, R. St J. & Cocks, L. R. M. 1984. The Ordovician, Silurian and Devonian periods (in press).CrossRefGoogle Scholar
Mills, H. H. 1979. Downstream rounding of pebbles—a quantitative review. J SEDIMENT PETROL 49, 295–302.Google Scholar
Mitchell, A. H. G. 1978. The Grampian orogeny in Scotland: arc-continent collision and polarity reversal. J GEOL 86, 643–6.CrossRefGoogle Scholar
Mitchell, A. H. G. & McKerrow, W. S. 1975. Analogous evolution of Burma orogen and the Scottish Calidonies. BULL GEOL SOC AM 86, 305–15.2.0.CO;2>CrossRefGoogle Scholar
Mitchell, G. H. & Mykura, W. 1962. The geology of the neighbourhood of Edinburgh. MEM GEOL SURV U K.Google Scholar
Moore, G. F., Curry, J. R. & Emmel, F. J. 1982. Sedimentation in the Sunda trench and fore-arc region. In Leggett, J. K. (ed.) Trench-fore-arc geology, 245–59. GEOL SOC LONDON SPEC PUBL 10.Google Scholar
Moseley, F. 1977. Caledonian plate tectonics and the place of the English Lake District. BULL GEOL SOC AM 88, 764–8.2.0.CO;2>CrossRefGoogle Scholar
Odin, G. S. 1982. Numerical dating in stratigraphy. New York: Wiley.Google Scholar
Pankhurst, R. J. & Pidgeon, R. T. 1976. Inherited isotope systems and the source region pre-history of early Caledonian granites in the Dalradian Series of Scotland. EARTH PLANET SCI LETT 31, 550–66.CrossRefGoogle Scholar
Paterson, I. B. & Harris, A. L. 1969. Lower Old Red Sandstone ignimbrites from Dunkeld, Perthshire. REP INST GEOL SCI 69/7.Google Scholar
Peach, B. N. & Horne, J. 1899. The Silurian rocks of Britain 1, Scotland. MEM GEOL SURV U K.Google Scholar
Piasecki, M. A. J. & van Breemen, O. 1983. Field and isotopie evidence for a c. 750 Ma tectonothermal event in Moine rocks in the Central Highland region of the Scottish Caledonides. TRANS R SOC EDINBURGH EARTH SCI 73 (FOR 1982), 119–34.CrossRefGoogle Scholar
Pitcher, W. S. 1978. The anatomy of a batholith. J GEOL SOC LONDON 135, 158–82.CrossRefGoogle Scholar
Powell, D. W. 1970. Magnetised rocks within the Lewisian of Western Scotland and under the Southern Uplands. SCOTT J GEOL 6, 353–69.CrossRefGoogle Scholar
Powell, D. W. 1971. A model for the Lower Palaeozoic evolution of the Southern margin of the early Caledonides of Scotland and Ireland. SCOTT J GEOL 7, 367–72.Google Scholar
Rolfe, W. D. I. 1961. The geology of the Hagshaw Hills Silurian inlier, Lanarkshire. TRANS EDINBURGH GEOL SOC 18, 240–69.CrossRefGoogle Scholar
Rolfe, W. D. I. & Fritz, M. A. 1966. Recent evidence for the age of the Hagshaw Hills Silurian inlier, Lanarkshire. SCOTT J GEOL 2, 159–64.CrossRefGoogle Scholar
Seeley, D. R., Vail, P. R. & Walton, G. G. 1974. Trench slope model. In Burk, C. A. & Drake, C. L. (eds) Geology of continiental margins, 249–60. New York: Springer.CrossRefGoogle Scholar
Stone, P. & Rushton, A. W. A. 1983. Graptolite faunas from the Ballantrae ophiolite complex and their structural implications. SCOTT J GEOL 19, 297–310.CrossRefGoogle Scholar
Thirlwall, M. F. 1981a. Peralkalme rhyolites from the Ordovician Tweeddale Lavas, Peebleshire, Scotland, GEOL J 16, 41–4.CrossRefGoogle Scholar
Thirlwall, M. F. 1981b. Implications for Caledonian plate tectonic models of chemical data from volcanic rocks of the British Old Red Sandstone. J GEOL SOC LONDON 138, 123–38.CrossRefGoogle Scholar
Thirlwall, M. F. 1983. Discussion on implications for Caledonian plate tectonic models of chemical data from volcanic rocks of the British Old Red Sandstone. J GEOL SOC LONDON 140, 315–8.Google Scholar
Thirlwall, M. F. & Bluck, B. J. 1984. Geochemical investigations of Ballantrae lavas, SW Scotland. J GEOL SOC LONDON 141, in press.Google Scholar
Tipper, J. C. 1976. The stratigraphy of the North Esk inlier, Midlothian. SCOTT J GEOL 12, 15–22.CrossRefGoogle Scholar
Upton, B. J. G., Aspen, P. & Chapman, N. A. 1983. The upper mantle and deep crust beneath the British Isles: evidence from inclusions in volcanic rocks. J GEOL SOC LONDON 140, 105–21.CrossRefGoogle Scholar
van Breemen, O. & Bluck, B. J. 1981. Episodic granite plutonism in the Scottish Caledonides. NATURE 291, 113–7.CrossRefGoogle Scholar
Vessell, R. K. & Davies, D. K. 1981. Non-marine sedimentation in an active fore-arc basin. In Eldridge, F. G. & Flores, R. M. (eds) Recent and ancient non-marine depositional environments: models for exploration. 31–45. SOC ECON PALAEONTOL MINERAL SPEC PUBL 31.CrossRefGoogle Scholar
Walton, E. K. 1955. Silurian greywackes in Peeblesshire. PROC R SOC EDINBURGH 65B, 327–57.Google Scholar
Walton, E. K. 1956. The Ordovician conglomerates in South Ayrshire. TRANS GEOL SOC GLASGOW 22, 133–56.CrossRefGoogle Scholar
Walton, E. K. 1965. Lower Palaeozoic rocks—stratigraphy. In Craig, G. Y. (ed.) The Geology of Scotland, 161–200. Edinburgh: Oliver & Boyd.Google Scholar
Warren, P. T. 1963. The petrography, sedimentation and provenance of the Wenlock rocks near Hawick, Roxburghshire. TRANS EDINBURGH GEOL SOC 19, 225–55.CrossRefGoogle Scholar
Warren, P. T. 1964. The stratigraphy and structure of the Silurian rocks south-east of Hawick, Roxburghshire. Q J GEOL LONDON 120, 193–218.CrossRefGoogle Scholar
Wells, P. R. A. & Richardson, S. W. 1979. Thermal evolution of metamorphic rocks in the Central Highlands of Scotland. In Harris, A. L., Holland, C. H. & Leake, B. E. (eds) The Caledonides of the British Isles—reviewed, 339–44. GEOL SOC LONDON SPEC PUBL 8.Google Scholar
Westbrook, G. K. 1982. The Barbados Ridge Complex: tectonics of a mature fore-arc system. In Leggett, J. K. (ed.) Trench–fore-arc geology, 275–90. GEOL SOC LONDON SPEC PUBL 10.Google Scholar
Williams, A. 1959. A structural history of the Girvan district, S. W. Ayrshire. TRANS R SOC EDINBURGH 63, 629–67.CrossRefGoogle Scholar
Williams, A. 1962. The Barr and Lower Ardmillan Series (Caradoc) of the Girvan district, south-west Ayrshire. MEM GEOL SOC LONDON 3.Google Scholar
Wright, A. E. 1976. Alternating subduction direction and the evolution of the Atlantic Caledonides. NATURE 264, 156–60.CrossRefGoogle Scholar
Wright, A. E. 1977. The evolution of the British Isles in the Late Pre-Cambrian. ESTUDIOS GEOL 33, 303–13.Google Scholar
Yardley, B. W. D., Vine, F. J. & Baldwin, C. T. 1982. The plate tectonic setting of NW Britain and Ireland in late Cambrian and early Ordovician times. J GEOL SOC LONDON 139, 455–63.CrossRefGoogle Scholar