The Dalradian rocks of Scotland

Geological Conservation Review Volume 38

D. Stephenson, A.G. Leslie, J.R. Mendum, P.W.G. Tanner, J.E. Treagus

(Front cover) Medium-scale folds with fanned spaced cleavages, related to the major early (F1) Kilmory Bay Syncline and developed in the basal part of the Crinan Grit Formation at the Kilmory Bay GCR site, Knapdale. The folding is controlled by a single competent bed of fine-grained quartzite within incompetent metamudstones that exhibit chlorite-grade, greenschist-facies regional metamorphism. Most of the GCR sites in this volume are important as representatives of key parts of the Dalradian succession, for their characteristic lithologies and for the regional metamorphism and spectacular structures imposed upon them during the Caledonian Orogeny. Some have historical value, and it was here that graded bedding was first used, in 1911, to demonstrate the way-up of deformed strata in the Scottish Highlands. (Photo: P.W.G. Tanner.)

Contents

Title page and preliminaries

2024 note

Preface N.V. Ellis

Access to the Countryside

Contents

Acknowledgements

1 The Dalradian Rocks of Scotland: an introduction

1.1 Introduction D. Stephenson

1.2 GCR site selection D. Stephenson

1.3 Basement to the Dalradian basins D. Stephenson

1.4 Dalradian lithostratigraphy D. Stephenson

1.5 Structure of the Grampian Highlands D. Stephenson

1.6 Metamorphism of the Grampian Highlands D.J. Fettes and A.G. Leslie

1.7 Dating the Dalradian sedimentation D. Stephenson

1.8 Tectonic evolution of the Dalradian basins D. Stephenson

1.9 Glossary and terminology

2 The Dalradian rocks of the south-west Grampian Highlands of Scotland

2.1 Introduction P.W.G. Tanner

2.2 Garvellach Isles P.W.G. Tanner

2.3 Caol Isla, Islay P.W.G. Tanner

2.4 Rubha a’ Mhail, Islay P.W.G. Tanner

2.5 Kilnaughton Bay, Islay C.A. Bendall

2.6 Lussa Bay, Jura C.A. Bendall

2.7 Kinuachdrach, Jura C.A. Bendall

2.8 Surnaig Farm, Islay C.A. Bendall

2.9 Ardbeg, Islay C.A. Bendall

2.10 Ardilistry Bay, Islay C.A. Bendall

2.11 Black Mill Bay, Luing P.W.G. Tanner

2.12 Craignish Point P.W.G. Tanner

2.13 Fearnach Bay P.W.G. Tanner

2.14 Kilmory Bay J.L. Roberts and P.W.G. Tanner

2.15 Port Cill Maluaig J.L. Roberts and P.W.G. Tanner

2.16 Strone Point P.W.G. Tanner

2.17 Kilchrenan Burn and Shore J.E. Treagus

2.18 West Tayvallich Peninsula E.A. Pickett

2.19 South Bay, Barmore Island J.L. Roberts and P.W.G. Tanner

2.20 Loch Avich E.A. Pickett

2.21 Bun-an-Uillt, Islay C.A. Bendall

2.22 Kilchiaran to Ardnave Point, Islay C.A. Bendall

3 The Dalradian rocks of the central Grampian Highlands of Scotland

3.1 Introduction J.E.

3.2 River Leven Section J.E. Treagus

3.3 Nathrach J.E. Treagus

3.4 Rubha Cladaich J.E. Treagus

3.5 Tom Meadhoin and Doire Ban J.E. Treagus

3.6 Stob Ban J.E. Treagus

3.7 St John’s Church, Loch Leven J.E. Treagus

3.8 Onich Dry River Gorge and Onich Shore Section J.E. Treagus

3.9 Ardsheal Peninsula J.E. Treagus

3.10 South Coast, Lismore Island J.E Treagus

3.11 Camas Nathais P.W.G. Tanner

3.12 Port Selma P.W.G. Tanner

3.13 River Orchy P.W.G. Tanner

3.14 A9 Road Cuttings and River Garry Gorge P.R. Thomas

3.15 Creag nan Caisean–Meall Reamhar P.R. Thomas

3.16 Meall Dail Chealach P.R. Thomas

3.17 Strath Fionan J.E. Treagus

3.18 Tempar Burn J.E. Treagus

3.19 Allt Druidhe J.E. Treagus

3.20 Slatich J.E. Treagus

3.21 Ben Lawers J.E. Treagus

3.22 Craig an Chanaich to Frenich Burn J.E. Treagus

3.23 Auchtertyre R.A. Scott

3.24 Ben Oss J.E. Treagus

4 The Dalradian rocks of the Highland Border region of Scotland

4.1 Introduction P.W.G. Tanner and J.E. Treagus

4.2 Ardscalpsie Point P.W.G. Tanner

4.3 Cove Bay to Kilcreggan P.W.G. Tanner

4.4 Portincaple P.W.G. Tanner

4.5 Bealach nam Bo C.W. Thomas

4.6 Duke’s Pass C.W. Thomas

4.7 Keltie Water, Callander P.W.G. Tanner

4.8 Little Glen Shee, Craig a’ Barns and Rotmell A.L. Harris

4.9 Glen Esk D. Gould and B. Harte

4.10 Garron Point to Muchalls C.W. Thomas

5 The Dalradian rocks of the northern Grampian Highlands of Scotland

5.1 Introduction A.G. Leslie

5.2 An Suidhe, Kincraig M. Smith

5.3 The Slochd M. Smith

5.4 Lochan Uaine M. Smith

5.5 Blargie Craig M. Smith and S.Robertson

5.6 River E C.J. Banks

5.7 Garva Bridge S.Robertson

5.8 Rubha na Magach C.J. Banks

5.9 Kinloch Laggan Road A86 S.Robertson

5.10 Allt Mhainisteir S.Robertson

5.11 Aonach Beag and Geal-charn S.Robertson, J.R. Mendum and A.G. Leslie

5.12 Ben Alder A.G. Leslie and C.J. Banks

6 The Dalradian rocks of the north-east Grampian Highlands of Scotland

6.1 Introduction D. Stephenson, J.R. Mendum and D.J. Fettes

6.2 Ben Vuirich P.W.G. Tanner

6.3 Gilbert’s Bridge, Glen Tilt R.A. Smith

6.4 Glen Ey Gorge C.G. Smith and D. Stephenson

6.5 Cairn Leuchan C.G. Smith

6.6 Balnacraig, Dinnet D. Gould

6.7 Muckle Fergie Burn J.R. Mendum

6.8 Bridge of Brown J.R. Mendum

6.9 Bridge of Avon J.R. Mendum

6.10 Kymah Burn J.R. Mendum

6.11 Black Water D. Stephenson and D.J. Fettes

6.12 Auchindoun Castle D. Stephenson

6.13 Cullen to Troup Head D. Stephenson, J.R. Mendum and D. Gould

6.14 Fraserburgh to Rosehearty D.J. Fettes

6.15 Cairnbulg to St Combs J.R. Mendum

6.16 Collieston to Whinnyfold J.R. Mendum

7 The Dalradian rocks of the Shetland Islands, Scotland

7.1 Introduction D. Flinn,

7.2 Scalloway D. Flinn and P. Stone

7.3 Hawks Ness P. Stone and D. Flinn

7.4 Cunningsburgh D. Flinn, P. Stone and D. Stephenson

Glossary

References

Figures