Showcase Images

 The images below show some of the great variety of geology to be found in Mull, Iona and Staffa. Click on any of the thumbnail images and it will open to give a larger picture. Click on the large image to close it again.

Folding in the Moine rocks at Ardalanish Bay.


Basaltic columns on the shore near the Fossil Tree



Basaltic columns seen end-on at Ardtun


Sea stack of columnar basalt lava near Ardtun


Looking over to the Ardmeanach peninsula from Bunessan. Trap featuring in the basalt lavas is obvious


Famous Palaeocene dyke near Calgary Pier


Calgary Bay, from the machair looking out to sea. Pre-glacial shoreline is the obvious terrace seen on both headlands


Ammonite cast on the shore near Carsaig


Basaltic columns of Carsaig Arches


Basaltic columns to the east of Carsaig


Creag a' Chrochair - a volcanic plug near Glengorm



Perched rock near Croggan - looks like a stone toadstool



Glac Mhor near Tobermory - columnar basalt lava


Dessication cracks in Triassic sediments near Gribun


Cliffs of the Wilderness near Gribun, seen from the sea


Top surface of a prominent sill near Gribun, showing pronounced jointing


Unconformity at Gribun - horizontal Triassic sediments overlie dipping Moine psammites


Beach on west side of Iona looking towards the Spouting Cave


Iona: Lewisian gneiss with green epidote vein


Iona: Glacial erratic of Ross of Mull granite lying atop Torridonian sediments


Machair on west side of Iona


Iona marble quarry


Iona: pebbles on the shore at Columba's Bay


South west corner of Iona - prominent cleft is a fault


Heart shaped xenolith in a granite erratic, Iona


Schists near Kilvickeon, folded to vertical


Dyke cutting ash bed at Lagganulva


The Loch Ba Ring Dyke on the slopes of Beinn a' Ghraig


Glacial P-forms on the shore near knock


Near Ardalanish - Contact of the Ross of Mull Granite and the Moine metamorphic rocks


Porphyritic microgranodiorite sheet cutting the Ross of Mull Granite near Fionnphort


'S Airde Beinn, a volcanic plug near Tobermory


Stac Mhic Mhurchaidh, a columnar sill, west of Iona


Staffa, seen from the boat


Staffa, seen from the boat


Staffa

Staffa




Staffa




Staffa



Livingstone's Cave, Ulva, looking out


Basalt lava columns, Ulva


 
Natural Arch and Sea Stack, the Wilderness

   
 
   
   

References:

Mull & Iona - A Landscape fashioned by Geology. Recently published by SNH, this is an excellent little guide to the geology of these islands. It is easy to follow and beautifully illustrated. One in a series of several "Landscape fashioned by Geology" Available direct from SNH