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XI.—The Evolution of the Scottish Caledonides in Relation to their Isotopic Age Pattern

Published online by Cambridge University Press:  06 July 2012

J. F. Dewey  and
R. J. Pankhurst
J. F. Dewey
Affiliation:
Department of Geology, University of Cambridge
R. J. Pankhurst
Affiliation:
Department of Geology and Mineralogy, University of Oxford.
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Synopsis

Three main stages are recognized in the evolution of the Scottish Caledonian orogen. Firstly, the development of the depositional framework from late Pre-Cambrian to early Ordovician times is outlined, The thick Moine and Dalradian sediments, accumulating on a continental rise, are shown to be equivalent to the shelf sequence of the foreland, and likely correlations are suggested. Secondly, the events comprising the Caledonian deformation and metamorphism of these sediments are reviewed and related to the development of a Benioff zone and coupled oceanic trench along the southern margin of the orogen through the Ballantrae complex. Comparison of stratigraphic and isotopic evidence for the age of these events leads to the conclusion that all major deformation and metamorphism occurred during a relatively short climactic episode 480–510 m.y. ago, within the Arenigian stage of the Ordovician. The third factor in the evolution of the orogen is post-climactic uplift and erosion continuing throughout Upper Ordovician, Silurian and Lower Devonian times. Contours of K–Ar mica ages are presented and related to the geological evidence for this prolonged period of isostatic recovery and thermal adjustment. The style and timing of granitic plutonism, which is closely associated with this third stage, may be indicative of crustal behaviour during uplift rather than continued metamorphism at depth.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 68 , Issue 11 , 1970 , pp. 361 - 389
Copyright
Copyright © Royal Society of Edinburgh 1970

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References

References to Literature

Althaus, E., 1967. “The triple point andalusite-sillimanite-kyanite”, Contr. Miner. Petrology, 16, 29–44.CrossRefGoogle Scholar
Bell, K., 1968. “Age relations and provenance of the Dalradian Series of Scotland”, Bull. Geol. Soc. Am., 79, 1167–1194.CrossRefGoogle Scholar
Berry, W. B. N., 1967. “Comments on correlation of the North American and British Lower Ordovician”, Bull. Geol. Soc. Am., 78, 419–427.CrossRefGoogle Scholar
Bird, J. N. and Dewey, J. F., 1970. “Lithosphere plate-continental margin tectonics and the evolution of the Appalachian orogen”, Bull. Geol. Soc. Am., 81, 1031–1060.CrossRefGoogle Scholar
Bloxam, R. W. and Allen, J. B., 1958. “Glaucophane schist, eclogite and associated rocks from Knockormal in the Girvan-Ballantrae Complex, South Ayrshire”, Trans. Roy. Soc. Edinb., 64, 1–27.CrossRefGoogle Scholar
Brown, P. E. and Miller, J. A., 1970. “Interpretation of isotopic ages in orogenic belts”. In Time and place in orogeny. London: Geol. Soc.Google Scholar
Brown, P. E., Miller, J. A. and Grasty, R. L. 1968. “Isotopic ages of late Caledonian intrusions in the British Isles”, Proc. Yorks. Geol. Soc., 36, 251–276.CrossRefGoogle Scholar
Brown, P. E., Miller, J. A., Grasty, R. L. and Fraser, W. E., 1965. “Potassium-argon ages of some Aberdeenshire granites and gabbros”, Nature, Lond., 207, 1287–1288.CrossRefGoogle Scholar
Brown, P. E., Miller, J. A., Soper, N. J. and York, D., 1965. “Potassium-argon age pattern of the British Caledonides”, Proc. Yorks. Geol. Soc., 35, 103–138.CrossRefGoogle Scholar
Brown, P. E., York, D., Soper, N. J., Miller, J. A., Macintyre, R. M. and Farrar, E., 1965. “Potassium argon ages of some Dalradian, Moine and related rocks”, Scott. J. Geol., 1, 144–151.CrossRefGoogle Scholar
Cadisch, J., 1953. Geologie der Schweizer Alpen. Basel: Wepf & Cie.CrossRefGoogle Scholar
Chinner, G. A., 1966. “The distribution of pressure and temperature during Dalradian metamorphism”, O. Jl Geol. Soc. Loud., 122, 159–186.CrossRefGoogle Scholar
Clark, G. S. and Kulp, J. L., 1968. “Isotopic age study of metamorphism and intrusion in western Connecticut and southeastern New York”, Am. J. Sci., 266, 865–894.CrossRefGoogle Scholar
Clark, S. P. Jr. and Niblett, E. R., 1956. “Terrestrial heatflow in the Swiss Alps”, Mon. Not. Roy. Astr. Soc. Geophys. Suppl., 7, 176–195.CrossRefGoogle Scholar
Dearnley, R., 1967. “Metamorphism of minor intrusions associated with the Newer Granites of the western Highlands of Scotland”, Scott. J. Geol., 3, 449–457.CrossRefGoogle Scholar
Dewey, J. F., 1961. “A note concerning the age of the Dalradian metamorphism of western Ireland”, Geol. Mag., 98, 399–405.CrossRefGoogle Scholar
Dewey, J. F., 1963. “The Lower Palaeozoic stratigraphy of central Murrisk, County Mayo, Ireland, and the evolutionof the South Mayo trough”, Q. Jl Geol. Soc. Lond., 119, 319–340.CrossRefGoogle Scholar
Dewey, J. F., 1969. “The evolution of the Appalachian/Caledonian orogen”, Nature, Lond., 222, 124–129.CrossRefGoogle Scholar
Dewey, J. F., Mckerrow, W. S. and Moorbath, S., 1970. “The relationship between isotopic ages, uplift and sedimentation during Ordovician times in western Ireland”, Scott. J. Geol., 6, 133–145.CrossRefGoogle Scholar
Dewey, J. F., Rickards, R. B. and Skevington, D., 1970. “New light on the age of Dalradian deformation and metamorphism in western Ireland”, Norsk. Geol. Tidsskr., 50, 19–44.Google Scholar
Dietz, R. S. and Holden, J. C., 1966. “Miogeoclines in space and time”, J. Geol., 74, 566–583.CrossRefGoogle Scholar
Drever, H. I., 1940. “The geology of Ardgour, Argyllshire”, Trans. Roy. Soc. Edinb., 60, 141–170.CrossRefGoogle Scholar
Evans, B. W., 1965. “Application of a reaction rate method to the breakdown equilibria of muscovite and musovite plus quartz”, Am. J. Sci., 263, 647–667.CrossRefGoogle Scholar
Evernden, J. F., Curtis, G. H., Kistler, R. W. and Obradovich, J., 1960. “Argon diffusion in glauconite, microcline, sanidine, leucite and phlogopite”, Am. J. Sci., 258, 583–604.CrossRefGoogle Scholar
Fettes, D. J., 1970. “The structural and metamorphic state of the Dalradian rocks and their bearing on the age of emplacement of the basic sheet”, Scott. J. Geol., 6, 108–118.CrossRefGoogle Scholar
Fitch, F. J., Miller, J. A. and Brown, P. E., 1964. “Age of Caledonian orogeny and metamorphism in Britain”, Nature, Lond., 203, 275–278.CrossRefGoogle Scholar
Fitch, F. J., Miller, J. A. and Mitchell, J. G., 1970. “A new approach to isotopic dating in orogenic belts”, In Time and place in orogeny. London: Geol. Soc.Google Scholar
Fyfe, W. S., 1967. “Stability of the AL2SiO5 polymorphs”, Chem. Geol., 2, 67–76.CrossRefGoogle Scholar
Fyfe, W. S., 1970. “Some thoughts on granitic magmas.” Geol. J. Spec. Issue, 2, 201–216.Google Scholar
Gerling, E. K., Koltsova, T. V., Petrov, B. V. and Zulfikarova, Z. K., 1965. “On the suitability of amphiboles for age determination by the K–Ar method”, Geochem. Int., 2, 148–154.Google Scholar
Giletti, B. J., Moorbath, S. and Lambert, R. St J., 1961. “A geochronological study of the metamorphic complexes of the Scottish Highlands”, Q. Jl Geol. Soc. Lond., 117, 233–272.CrossRefGoogle Scholar
Gribble, C. D., 1966. “The thermal aureole of the Haddo House norite in Aberdeenshire”, Scott. J. Geol., 2, 306–313.CrossRefGoogle Scholar
Gribble, C. D., 1967. “The basic intrusive rocks of Caledonian age of the Haddo House and Arnage districts, Aberdeenshire”, Scott. J. Geol., 3, 125–136.CrossRefGoogle Scholar
Gribble, C. D., 1968. “The corderite-bearing rocks of the Haddo House and Arnage districts, Aberdeenshire”, Contr. Miner. Petrology, 17, 315–330.CrossRefGoogle Scholar
Hanson, G. N. and Gast, P. W., 1966. “Kinetic studies in contact metamorphic zones”, Geochim. Cosmochim. Acta, 31, 1119–1153.CrossRefGoogle Scholar
Harper, C. T., 1964. “Potassium-argon ages of slates and their geological significance”, Nature, Lond., 203, 468–470.CrossRefGoogle Scholar
Harper, C. T., 1967 a. “The geological interpretation of potassium-argon ages of metamorphic rocks from the Scottish Caledonides”, Scott. J. Geol., 3, 46–66.CrossRefGoogle Scholar
Harper, C. T., 1961 b. “On the interpretation of potassium-argon ages from Precambrian shields and Phanerozoic orogens”, Earth Planet. Sci. Lett., 3, 128–132.CrossRefGoogle Scholar
Harris, P. M., Farrar, E., Macintyre, R. M. and York, D., 1966. “Potassium-argon age measurements on two igneous rocks from the Ordovician system of Scotland”, Nature, Lond., 205, 352–353.CrossRefGoogle Scholar
Hart, S. R., 1964. “The petrology and isotopic mineral age relations of a contact zone in the Front Range, Colorado”, J. Geophys. Res., 72, 493–525.Google Scholar
Harte, B. and Johnson, M. R. W., 1969. “Metamorphic history of Dalradian rocks in Glens Clova, Esk and Lethnot, Angus, Scotland”, Scott. J. Geol., 5, 54–80.CrossRefGoogle Scholar
Higgins, A. C., 1967. “The age of the Durine member of the Durness Limestone formation at Durness”, Scott. J. Geol., 3, 382–388.CrossRefGoogle Scholar
Holdaway, M. J., 1968. “Stability of andalusite”, Geol. Soc. Am. Abstr. Prog. 1968 Mtg, 140.Google Scholar
Hurley, P. M., Hughes, H., Pinson, W. H. and Fairbairn, H. W., 1962. “Radiogenic argon and strontium diffusion parameters in biotite at low temperatures from Alpine fault uplift in New Zealand”, Geochim. Cosmochim. Acta, 26, 67–80.CrossRefGoogle Scholar
Isacks, B., Oliver, J. and Sykes, L. R., 1968. “Seismology and the new global tectonics”, J. Geophys. Res., 73, 5855–5899.CrossRefGoogle Scholar
Johnson, M. R. W., 1962. “Relations of movement and metamorphism in the Dalradian of Banffshire”, Trans. Edinb. Geol. Soc., 19, 29–64.CrossRefGoogle Scholar
Johnson, M. R. W., 1963. “Some time relations of movement and metamorphism in the Scottish Highlands”, Geologie Mijnb., 42, 121–142.Google Scholar
Johnson, M. R. W. and Harris, A. L., 1967. “Dalradian-Arenig relations in parts of the Highland Border, Scotland, and their significance in the chronology of the Caledonian orogeny”, Scott. J. Geol., 3, 1–16.CrossRefGoogle Scholar
Kennedy, W. Q., 1946. “On the significance of thermal structure in the Scottish Highlands”, Geol. Mag., 85.Google Scholar
Kennedy, W. Q., 1958. “The tectonic evolution of the Midland Valley of Scotland”, Trans. Geol. Soc. Glasg., 23, 106–133.CrossRefGoogle Scholar
Lambert, R. St J., 1969 a. “Isotopic studies relating to the Precambrian history of the Moinian of Scotland”, Proc. Geol. Soc., 1652, 243–245.Google Scholar
Lambert, R. St J., 1969 b. “The pre-Pleistocene Phanerozoic time-scale: a review”, Q. Jl Geol. Soc. Lond., (in press).Google Scholar
Leggo, P. J. and Pidgeon, R. T., 1970. “Geochronological investigations of Caledonian History in Western Ireland”, Eclog. Geol. Helv., 63, 207–212.Google Scholar
Leggo, P. J., Compston, W. and Leake, B. E., 1966. “The geochronology of the Connemara granites and its bearing on the antiquity of the Dalradian Series”, Q. Jl Geol. Soc. Lond., 122, 91–188.CrossRefGoogle Scholar
Leggo, P. J., Tanner, P. W. G. and Leake, B. E., 1969. “An isochron study of the Donegal granite and some Dalradian rocks of Britain”, Am. Ass. Petrol. Geol., Mem., 12, 354.Google Scholar
Long, L. E., 1961. “Isotopic ages from Northern New Jersey and Southeastern New York”, Ann. N.Y. Acad. Sci., 91, 400–407.CrossRefGoogle Scholar
Long, L. E., 1964. “Rb-Sr chronology of the Carn Chuinneag intrusion, Ross-shire, Scotland”, J. Geophys. Res., 69, 1589–1597.CrossRefGoogle Scholar
Long, L. E. and Kulp, J. L., 1962. “Isotopic age study of the metamorphic history of the Manhattan and Reading Prongs”, Bull. Geol. Soc. Am., 73, 969–996.CrossRefGoogle Scholar
Long, L. E. and Lambert, R. St J., 1963. “Rb-Sr isotopic ages from the Moine Series”. In The British Caledonides, (Ed. Johnson, M. R. W. and Stewart, F. H.). 217–247. Edinburgh: Oliver and Boyd.Google Scholar
Mcgregor, D. M. and Wilson, D. V., 1967. “Gravity and magnetic surveys of the younger gabbros of Aberdeenshire”, Q. Jl Geol. Soc. Lond., 123, 99–123.CrossRefGoogle Scholar
Matsushima, S., Kennedy, G. C., Akella, J. and Haygarth, J., 1967. “A study of equilibrium relations in the system Al2O3–SiO2H2O and Al2O3–H2O”, Am. J. Sci., 265, 28–4.CrossRefGoogle Scholar
Mendum, J. R., 1968. “Unconformities in the Ballantrae Volcanic Sequence”, Trans. Geol. Ass. Leeds, 7, 261–264.Google Scholar
Mercy, E. L. P., 1965. “Caledonian igneous activity”, In The Geology of Scotland, (Ed. Craig, G. Y.), 229–267. Edinburgh: Oliver and Boyd.Google Scholar
Miller, J. A. and Brown, P. E., 1965. “Potassium-argon age studies in Scotland”, Geol. Mag., 102, 106–134.CrossRefGoogle Scholar
Miyashiro, A., 1961. “Evolution of metamorphic belts”, J. Petrology, 2, 277–311.CrossRefGoogle Scholar
Miyashiro, A., 1967. “Orogeny, regional metamorphism and magmatism in the Japanese Islands”, Meddr Dansk. Geol. Foren., 17, 390–446.Google Scholar
Moorbath, S., 1967. “Recent advances in the application and interpretation of radiometric age data”, Earth Sci. Rev., 3, 111–133.CrossRefGoogle Scholar
Moorbath, S., 1969. “Evidence for the age of deposition of the Torridonian sediments of north-west Scotland”, Scott. J. Geol., 5, 154–170.CrossRefGoogle Scholar
Moorbath, S., Bell, K., Leake, B. E. and Mckerrow, W. S., 1968. “Geochronological studies in Connemara and Murrisk, western Ireland”. In Radiometric Dating, (Ed. Hamilton, E. I. and Farquhar, R. O..). New York: Wiley.Google Scholar
O'nions, R. K., Smith, D. G. W., Baadsgaard, H. and Morton, R. D., 1969. “Influence of chemical composition on argon retentivity in metamorphic calcic amphiboles from South Norway”, Earth Planet. Sci. Lett., 5, 339–345.CrossRefGoogle Scholar
Oxburgh, E. R. and Turcotte, D. L., 1968. “Problem of high heatflow and volcanism associated with zones of descending mantle convective flow”, Nature, Lond., 218, 1041–1043.CrossRefGoogle Scholar
Pankhurst, R. J., 1969. “Strontium isotope studies applied to petrogenesis in the basic igneous province of North-East Scotland”, J. Petrology. 10, 116–145.CrossRefGoogle Scholar
Pankhurst, R. J., 1970. “The geochronology of the basic igneous complexes”, Scott. J. Geol., 6, 83–107CrossRefGoogle Scholar
Pantin, H. M., 1962. “Further contributions to discussion at Symposium: Depth and tectonics as factors in regional metamorphism”, Proc. Geol. Soc., 1599, 117–118.Google Scholar
Penck, W., 1953. Morphological analysis of landforms. London: McMillan.Google Scholar
Pidgeon, R. T., 1969. “Zircon U-Pb ages from the Galway granite and the Dalradian of Connemara, Western Ireland”, Scott. J. Geol., 5, 375–392.CrossRefGoogle Scholar
Platten, I. M., 1968. “The metamorphism of minor intrusions associated with the Newer Granites of the Western Highlands of Scotland”, Scott. J. Geol., 4, 370–372.CrossRefGoogle Scholar
Pringle, J., 1940. “The discovery of Cambrian trilobites in the Highland Border rocks near Callander, Perthshire”, Advmt Sci. Lond., 1, 252.Google Scholar
Ramsay, J. G., 1958. “Moine-Lewisian relations at Glenelg, Inverness-shire”, Q. Jl Geol. Soc. Lond., 113, 487–523.CrossRefGoogle Scholar
Ramsay, J. G., 1963. “Structure and metamorphism of the Moine and Lewisian rocks of the North-West Caledonides”. In The British Caledonides, (Ed. Johnson, M. R. W. and Stewart, F. H.). Edinburgh: Oliver and Boyd.Google Scholar
Ramsay, J. G. and Spring, J., 1963. “Moine stratigraphy in the western Highlands of Scotland”, Proc. Geol. Ass., 73, 295–326.CrossRefGoogle Scholar
Rast, N., 1963. “Structure and metamorphism of the Dalradian rocks of Scotland”. In The British Caledonides, (Ed. Johnson, M. R. W. and Stewart, F. H.), 123–142. Edinburgh: Oliver and Boyd.Google Scholar
Read, H. H., 1961. “Aspects of Caledonian magmatismin Britain”, Proc. Lpool Manchr Geol. Soc., 2, 653–683.CrossRefGoogle Scholar
Read, H. H. and Farquhar, O. C., 1956. “The Buchan anticline of the Banff nappe of Dalradian rocks in north-east Scotland”, Q. Jl Geol. Soc. Lond., 112, 131–154.CrossRefGoogle Scholar
Richardson, S. W., 1968. “Staurolite stability in a part of the system Fe-Al-Si-O-H”, J. Petrology, 9, 467–488.CrossRefGoogle Scholar
Richardson, S. W., Gilbert, H. C. and Bell, P. M., 1969. “Experimental determination of kyanite-andalusite and andalusite-sillimanite equilibria; the aluminium silicate triple point”, Am. J. Sci., 267, 259–272.CrossRefGoogle Scholar
Rutland, R. W. R., 1965. “Tectonic overpressures”. In Controls of Metamorphism. 119–139. Edinburgh: Oliver and Boyd.Google Scholar
Rutland, R. W. R., Guest, J. E. and Grasty, R. L., 1965. “Isotopic ages and Andean uplift”, Nature, Lond., 208, 677–678.CrossRefGoogle Scholar
Shackleton, R. M., 1958. “Downward-facing structures of the Highland Border”, Q. Jl Geol. Soc. Lond., 112, 361–392.Google Scholar
Skevington, D., 1968. “British and North American Lower Ordovician correlation: discussion”, Bull. Geol. Soc. Am., 79, 1259–1264.CrossRefGoogle Scholar
Smith, T. E., 1968. “The geological interpretation of potassium-argon ages of metamorphic rocks from the Scottish Caledonides”, Scott. J. Geol., 4, 87–90.CrossRefGoogle Scholar
Stewart, A. D., 1966. “An unconformity in the Torridonian”, Geol. Mag., 103, 462–464.CrossRefGoogle Scholar
Summerhayes, C. P., 1966. “A geochronological and strontium isotope study on the Garabal Hill-Glen Fyne igneous complex, Scotland”. Geol. Mag., 103, 153–165.CrossRefGoogle Scholar
Wadsworth, W. J., Stewart, F. H. and Rothstein, A. T. V., 1966. “Cryptic layering in the Belhelvie intrusion, Aberdeenshire”, Scott. J. Geol., 2, 54–66.CrossRefGoogle Scholar
Watson, J. V., 1964. “Conditions in the metamorphic Caledonides during the period of late orogenic cooling”, Geol. Mag., 101, 457–465.CrossRefGoogle Scholar
Walton, E. K., 1956. “Lower Palaeozoic rocks-stratigraphy’, Trans. Geol. Soc. Glasg., 22.Google Scholar
Westoll, N. D. S. and Miller, J. A., 1969. “The ages of some kentallenite intrusions in Argyll’, Scott. J. Geol., 5, 11–14.CrossRefGoogle Scholar
Whittington, H. B. and Williams, A., 1964. “The Ordovician Period’. In The Phanerozoic Time scale, (Ed. Harland, W. B., Smith, A. G. and Wilcock, B.), 241–254. London: Geol. Soc.Google Scholar