Excursions | Geological Society of Glasgow

Kilchrist, Skye: Durness Limestone, Palaeogene basalt dyke, Blabheinn behind

Skye "marble" quarry: Durness Limestone (Cambro-Ordovician)

Preshal More, Skye: Palaeogene tholeiitic basalt of Talisker Formation

Gryphea in Jurassic limestone, Morvern

Kentallenite, Loch Linnhe (Devonian)

Pap of Glencoe: Ordovician quartzite (metamorphosed Appin Group sediments)

Folds in ferrodolomite, Kerrera (Argyll Group, Easdale Subgroup)

Quinag: Applecross Formation, Torridon Group, with cap of Cambrian quartz arenite

Dolomite raft in Port Askaig Tillite, Garvellachs (Neoproterozoic)

Lion Rock, Great Cumbrae: Palaeogene dyke composed of cumbraite

Little Cumbrae from Great Cumbrae: Carboniferous basalts

Metalimestone of Fordyce Limestone Formation (Appin Group), Sandend Bay

Arthur's Seat & Salisbury Crags: Carboniferous volcano & sill, Edinburgh

The Giant's Causeway, Antrim: Palaeogene basalt

Archean grey gneiss, Scourie dykes & granite pegmatites, Laxford Bridge

Granite veins in amphibole-rich gneiss, Scourie (Archean)

Arkle: Cambrian quartz arenite

Silurian greywackes & shales, St Abb's Head

Basalt pillows; part of Ballantrae Igneous Complex (Ordovician)

April 2020

Friday 24 Apr

Islay

Start date: Friday, 24 Apr 2020 12:00pm

End date: Monday, 27 Apr 2020 12:00pm

1800 Ma gneiss, Precambrian metasediments and fossil stromatolites, the famous Port Askaig Tillite (possible “Snowball Earth”?), low grade metamorphic Dalradian rocks retaining original sedimentary structures, reactivated and reversed extensional faults, substantial mineralisation, 60 Ma igneous intrusions (opening of the Atlantic Ocean) and a large selection of Quaternary Ice Age features.

May 2020

Friday 08 May

Ardnamurchan

Start date: Friday, 08 May 2020 12:00pm

End date: Monday, 11 May 2020 12:00pm

Exposures of igneous, sedimentary and metamorphic rocks associated with the Ardnamurchan “textbook volcano”, with examples of mixed magma, ash flows, ring dykes, cone sheets and airfall rocks.