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Aspects of the post-depositional evolution of Dalradian and Highland Border Complex rocks in the Southern Highlands of Scotland

Published online by Cambridge University Press:  03 November 2011

B. Harte ,
J. E. Booth ,
T. J. Dempster ,
D. J. Fettes ,
J. R. Mendum  and
D. Watts
B. Harte
Affiliation:
Grant Institute of Geology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, Scotland.
J. E. Booth
Affiliation:
Grant Institute of Geology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, Scotland.
T. J. Dempster
Affiliation:
Grant Institute of Geology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, Scotland.
D. J. Fettes
Affiliation:
British Geological Survey, Murchison House, West Mains Road, Edinburgh EH9 3LA, Scotland.
J. R. Mendum
Affiliation:
British Geological Survey, Murchison House, West Mains Road, Edinburgh EH9 3LA, Scotland.
D. Watts
Affiliation:
Department of Geology, University of Glasgow, Glasgow G12 8QQ, Scotland.
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Abstract

Palaeomagnetic data define a polar wander path for the Dalradian tectonic block of the Scottish Highlands but resolve no relative motion between the Dalradian and Midland Valley blocks from early Ordo vician onwards. The history of structural episodes (D1 to D4) is traced for the Dalradian rocks of the Southern Highlands, and peak metamorphic temperatures are closely associated with D3 in the 520–490 Ma (early Ordovician) time period, whilst retrograde events are mostly associated with D4. Throughout the structural history, the influence of a lineament or lineaments parallel to the Highland Border is seen and is particularly demonstrated by the formation of the major Highland Border downbend (D4) structure. This monoform is interpreted as lying structurally above a major step in the basement and is associated with uplift of the Dalradian flat belt in the period 460–440 Ma (late Ordovician).

The mechanism of emplacement of the slivers of Highland Border Complex (HBC) rocks adjacent to the Dalradian Supergroup along the Highland Boundary fault zone is considered given that structural and palaeontological evidence indicates the emplacement to be post- D3 in the Dalradian rocks. The steep attitude of rocks along the Highland Boundary fault zone is probably due to vertical movements but either thrust or strike-slip movements are also indicated. Thrust emplacement prior to downbend formation (D4 in the Dalradian rocks) would also precede uplift and have to take place at considerable depth (10–20 km). Thrust emplacement subsequent to downbend formation is difficult to reconcile with the existing structural relations, whilst strike-slip motion offers a straightforward mechanism of placement.

Keywords

basement controlpalaeomagnetismradiometric ageregional metamorphismstrike-sliptectonismthrustuplift
Type
Highland Border and Dalradian terranes
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 75 , Issue 2: Deep Geology of the Midland Valley of Scotland and Adjacent Regions. Bicentenary Symposium , 1984 , pp. 151 - 163
Copyright
Copyright © Royal Society of Edinburgh 1984

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References

Anderson, J. G. C. 1947. The Geology of the Highland Border, Stonehaven to Arran. TRANS R SOC EDINBURGH 61, 497–515.Google Scholar
Anderton, R. 1982. Dalradian deposition and the late Precambrian–Cambrian history of the N Atlantic region: a review of the early evolution of the Iapetus Ocean. J GEOL SOC LONDON 139, 421–31.CrossRefGoogle Scholar
Bailey, E. B. 1922. The Structure of the South-west Highlands of Scotland. Q J GEOL SOC LONDON 78, 82–131.CrossRefGoogle Scholar
Bamford, D., Nunn, K., Prodehl, C. & Jacob, B. 1977. LISPB-III. Upper crustal structure of northern Britain. J GEOL SOC LONDON 133, 481–8.CrossRefGoogle Scholar
Barrow, G. 1893. On an intrusion of muscovite-biotite gneiss in the southeastern Highlands of Scotland, and its accompanying metamorphism. Q J GEOL SOC LONDON 49, 330–58.CrossRefGoogle Scholar
Barrow, G. 1901. On the Occurrence of Silurian (?) Rocks in Forfarshire and Kincardineshire along the Eastern Border of the Highlands. Q J GEOL SOC LONDON 57, 328–45.CrossRefGoogle Scholar
Barrow, G. 1912. On the Geology of Lower Deeside and the Southern Highland Border. PROC GEOL ASSOC 23, 274–90.CrossRefGoogle 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. 1984. Pre-Carboniferous history of the Midland Valley of Scotland. TRANS R SOC EDINBURGH; EARTH SCI 75, 275–95.CrossRefGoogle Scholar
Bradbury, H. J. 1979. Migmatisation, deformation and porphyroblast growth in the Dalradian of Tayside, Scotland. In Harris, A. L., Holland, C. H. & Leake, B. E. (eds) The Caledonides of the British Isles—reviewed, 351–6. SPEC PUBL GEOL SOC LONDON 8.Google Scholar
Bradbury, H. J., Smith, R. A. & Harris, A. L. 1976. ‘Older’ granites as time-markers in Dalradian evolution. J GEOL SOC LONDON 132, 677–84.CrossRefGoogle Scholar
Briden, J. C., Morris, W. A. & Piper, J. D. A. 1973. Garabal Hill–Glen Fyne Igneous complexes, Scotland. GEOPHYS J R ASTRON SOC 21, 457–70.CrossRefGoogle Scholar
Briden, J. C., Morris, W. A. & Piper, J. D. A. 1973. Palaeomagnetic studies in the British Caledonides—VI Regional and Global implications. GEOPHYS J R ASTRON SOC 34, 107–34.CrossRefGoogle Scholar
Brown, P. E., Miller, J. A. & Grasty, J. J. 1968. Isotopie ages of Late Caledonian granitic intrusions in the British Isles. PROC YORKSHIRE GEOL SOC 36, 251–76.CrossRefGoogle Scholar
Chinner, G. A. 1966. the distribution of pressure and temperature during Dalradian metamorphism. Q J GEOL SOC LONDON 122, 159–86.CrossRefGoogle Scholar
Chinner, G. A. 1978. Metamorphic zones and fault displacement in the Scottish Highlands. GEOL MAG 115, 37–45.CrossRefGoogle Scholar
Cowie, J. W., Rushton, A. W. A. & Stubblefield, C. J. 1972. A correlation of Cambrian rocks in the British Isles. SPEC REP GEOL SOC LONDON 2.Google Scholar
Curry, G. B., Bluck, B. J., Burton, C. J., Ingham, J. K., Siveter, D. J. & Williams, A. 1984. Age, evolution and tectonic history of the Highland Border Complex, Scotland. TRANS R SOC EDINBURGH: EARTH SCI 75, 113–33.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
Dempster, T. J. 1983. Studies of orogenic evolution in the Scottish Dalradian. Unpublished Ph.D. thesis, Edinburgh University.Google Scholar
Dempster, T. J. 1984a. Localised uplift in the Scottish Dalradian. NATURE 307, 156–9.CrossRefGoogle Scholar
Dempster, T. J. 1984b. Uplift patterns and orogenic evolution in the Scottish Dalradian. J GEOL SOC LONDON 142 (in press).CrossRefGoogle Scholar
Dewey, J. F. & Pankhurst, R. J. 1970. The evolution of the Scottish Caledonides in relation to their isotopie age pattern. TRANS R SOC EDINBURGH 68, 361–89.CrossRefGoogle Scholar
Dodson, M. H. & McLelland-Brown, E. 1980. Magnetic blocking temperatures of single-domain grains during slow cooling. J GEOPHYS RES 85, 2625–37.CrossRefGoogle Scholar
Fettes, D. J. 1970. The structural and metamorphic state of the Dalradian rocks and their bearing on the age of emplacement of basic sheet. SCOTT J GEOL 6, 83–107.CrossRefGoogle Scholar
Fettes, D. J., Graham, C. M., Sassi, F. P. & Scolari, A. 1976. The lateral spacing of potassic white micas and facies series variation across the Caledonides. SCOTT J GEOL 12, 227–36.CrossRefGoogle Scholar
Fitch, F. J., Miller, J. A. & Brown, P. E. 1964. Age of Caledonian Orogeny and metamorphism in Britain. NATURE 203, 275–8.CrossRefGoogle Scholar
George, T. N. 1960. The stratigraphical evolution of the Midland Valley. TRANS GEOL SOC GLASGOW 24, 32–107.CrossRefGoogle Scholar
Graham, C. M. 1983. High pressure greenschist to epidoteamphibolite fades metamorphism of Dalradian rocks of the SW Scottish Highlands: isograds and P—T conditions. GEOL SOC LONDON NEWSL 12/4, 19.Google Scholar
Hamilton, P. J., Bluck, B. J. & Halliday, A. N. 1984. SM-Nd ages from the Ballantrae complex, SW Scotland. TRANS R SOC EDINBURGH: EARTH SCI 75, 183–7.CrossRefGoogle Scholar
Harper, C. T. 1964. Potassium–argon ages of slates and their geological significance. NATURE 203, 468–70.CrossRefGoogle Scholar
Harper, C. T. 1967. The geological interpretation of potassiumargon ages of metamorphic rocks from the Scottish Caledonides. SCOTT J GEOL 3, 46–66.CrossRefGoogle Scholar
Harris, A. L., Bradbury, H. J. & McGonigal, M. H. 1976. The evolution and transport of the Tay Nappe. SCOTT J GEOL 12, 103–13.CrossRefGoogle Scholar
Harte, B. 1979. The Tarfside succession and the structure and stratigraphy of the eastern Scottish Dalradian rocks. In Harris, A. L., Holland, C. H. & Leake, B. E. (eds) The Caledonides of the British Isles—reviewed 221–8. SPEC PUBL GEOL SOC LONDON 8.Google Scholar
Harte, B. & 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
Harte, B., Dempster, T. J. & Booth, J. E. 1984. P—T estimates and mineral facies variation in space and time in the Central and SE Scottish Highlands. J GEOL SOC LONDON 142 (in press).Google Scholar
Harte, B. & Hudson, N. F. C. 1979. Pelite facies series and the temperatures and pressures of Dalradian metamorphism in E Scotland. In Harris, A. L., Holland, C. H. & Leake, B. E. (eds) The Caledonides of the Britain Isles—reviewed, 323–37. SPEC PUBL GEOL SOC LONDON 8.Google Scholar
Henderson, W. G. & Robertson, A. H. F. 1982. The Highland Border rocks and their relation to marginal basin development in the Scottish Caledonides. J GEOL SOC LONDON 139, 433–50.CrossRefGoogle Scholar
Hurford, A. J. 1977. A preliminary fission track dating survey of Caledonian ‘newer and last granites’ from the Highlands of Scotland. SCOTT J GEOL 13, 271–84.CrossRefGoogle Scholar
Jäger, E. 1979. Introduction to geochronology. In Jäger, E. & Hunziker, J. C. (eds) Lectures in isotope geology, 1–12. Berlin: Springer.CrossRefGoogle Scholar
Johnson, M. R. W. & 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
Latham, A. G. & Briden, J. C. 1975. Palaeomagnetic field directions in Siluro-Devonian lavas of the Lome Plateau, Scotland, and their regional significance. GEOPHYS J R ASTRON SOC 43, 243–52.CrossRefGoogle Scholar
Leake, B. E., Tanner, P. W. G., Macintyre, R. M. & Elias, E. 1984. Tectonic position of the Dalradian rocks of Connemara and its bearing on the evolution of the Midland Valley of Scotland. TRANS R SOC EDINBURGH: EARTH SCI 75, 165–71.CrossRefGoogle Scholar
Longman, C. D., Bluck, B. J. & van Breemen, O. 1979. Ordovician conglomerates and the evolution of the Midland Valley. NATURE 280, 578–80.CrossRefGoogle Scholar
Pankhurst, R. J. 1970. The geochronology of the basic igneous complexes. SCOTT J GEOL 6, 83–107.CrossRefGoogle Scholar
Pankhurst, R. J. 1974. Rb–Sr whole rock chronology of Caledonian events in Northeast Scotland. BULL GEOL SOC AM 85, 345–50.2.0.CO;2>CrossRefGoogle Scholar
Pankhurst, R. J. & Pidgeon, R. T. 1976. Inherited isotope systems and the source region prehistory of early Caledonian granites in the Dalradian Series of Scotland. EARTH PLANET SCI LETT 31, 55–68.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
Pidgeon, R. T. & Aftalion, M. 1978. Cognetic and inherited zircon U–Pb systems in granites: Palaeozoic granites of Scotland and England. In Bowes, D. R. & Leake, B. E. (eds) Crustal evolution in northwestern Britain and adjacent regions, 183–220. GEOL J SPEC ISSUE 10.Google Scholar
Piper, J. D. A. 1978. Palaeomagnetism and palaeogeography of the Southern Uplands block in Ordovician times. SCOTT J GEOL 14, 93–107.CrossRefGoogle Scholar
Pringle, J. 1941. On the relationships of the Green Conglomerate to the Margie Grits in the North Esk, near Edzell; and on the probable age of the Margie Limestone. TRANS GEOL SOC GLASGOW 20, 136–40.CrossRefGoogle Scholar
Read, H. H. 1955. The Banff Nappe: an interpretation of the structure of the Dalradian rocks of northeast Scotland. PROC GEOL ASSOC 66, 1–29.CrossRefGoogle Scholar
Reading, H. G. 1980. Characteristics and recognition of strike-slip fault systems. In Ballance, P. & Reading, H. G. (eds) Sedimentation in oblique-slip mobile zones, 7–26. SPEC PUBL INT ASSOC SEDIMENTOL 4.CrossRefGoogle Scholar
Roberts, J. L. 1974. The structure of the Dalradian rocks in the SW Highlands of Scotland. J GEOL SOC LONDON 130, 93–124.CrossRefGoogle Scholar
Roberts, J. L. & Treagus, J. E. 1977. Polyphase generation of nappe structures in the Dalradian rocks of the southwest Highlands of Scotland. SCOTT J GEOL 13, 237–54.CrossRefGoogle Scholar
Roberts, J. L. & Treagus, J. E. 1979. Stratigraphical and structural correlation between the Dalradian rocks of the SW and Central Highlands of Scotland. In Harris, A. L., Holland, C. H. & Leake, B. E. (eds) The Caledonides of the British Isles—reviewed, 199–204. SPEC PUBL GEOL SOC LONDON 8.Google Scholar
Robertson, A. H. F. & Henderson, W. G. 1984. Geochemical evidence for the origins of igneous and sedimentary rocks of the Highland Border, Scotland. TRANS R SOC EDINBURGH: EARTH SCI 75, 135–50.CrossRefGoogle Scholar
Sallomy, J. T. & Piper, J. D. A. 1973. Palaeomagnetic studies of the British Caledonides—II The Younger Gabbros of Aberdeenshire, Scotland. GEOPHYS J R ASTRON SOC 34, 13–26.CrossRefGoogle Scholar
Shackleton, R. M. 1958. Downward-facing structures of the Highland Border. Q J GEOL SOC LONDON 113, 361–92.CrossRefGoogle Scholar
Sivaprakash, C. 1981. Zoned garnets in some Scottish Dalradian pelites. MINERAL MAG 44, 301–7.CrossRefGoogle Scholar
Sivaprakash, C. 1982. Geothermometry and geobarometry of Dalradian metapelites and metabasites from the Central Scottish Highlands. SCOTT J GEOL 18, 109–24.CrossRefGoogle Scholar
Steiger, R. H. & Jäger, E. 1977. Subcommission on Geochronology: convention on the use of decay constants in geo- and cosmo-chronology. EARTH PLANET SCI LETT 36, 359–62.CrossRefGoogle Scholar
Stringer, P. 1957. Polyphase deformation in the Upper Dalradian rocks of the Southern Highlands of Scotland. Unpublished Ph.D. thesis, Liverpool University.Google Scholar
Thomas, P. R. 1979. New evidence for a Central Highland Root Zone. In Harris, A. L., Holland, C. H. & Leake, B. E. (eds) The Caledonides of the British Isles—reviewed, 205–11. SPEC PUBL GEOL SOC LONDON 8.Google Scholar
Turnell, H. B. 1982. Palaeomagnetism of Lower Palaeozoic intrusions in the Scottish Highlands. Unpublished Ph.D. thesis, Leeds University.Google 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. 1981. Episodic granite plutonism in the Scottish Caledonides. NATURE 291, 113–7.CrossRefGoogle Scholar
Watts, D. R. & Briden, J. C. 1984. Palaeomagnetic signature of slow post-orogenic cooling of the Northeast Highlands of Scotland recorded in the Newer Gabbros of Aberdeenshire. GEOPHYS J R ASTRON SOC 72, (in press).CrossRefGoogle Scholar