Transactions of the Edinburgh Geological Society, Volume 17

agglomerate Assynt augite Balgownie Ballantrae Balsillie bands basalt Bennane Bennane Head biotite bore borolanite boulder clay Cambrian Carboniferous chert Coal Colmonell conodonts crests debris deformation deposits developed dolerite dyke east Edin Edinburgh EDINBURGH GEOLOGICAL SOCIETY erosion evidence facies feldspar Fife flow folds foliation free face Geol Geological glacial gneiss graded bedding grains granite granite-gneiss graptolite gravel grey greywacke hillslopes igneous interglacial intrusions lavas layers Ledmorite Lendalfoot Limestone Llandeilian locality Loch lower metamorphic Midland Valley minerals mud-ridges mylonites nepheline non-igneous tuff occur Old Red Sandstone olivine-basalts Ordovician origin outcrop Peach and Horne pegmatites Pinbain planes pseudotachylite quartz ridges ripples river rock gorge sand schist Scotland sea level Seaton Haugh sedimentary sediments serpentine shale Shand Sidlaws siltstone slope South Harris South Uist specimens spilite structures surface Surv Syenite tectonic terraces thick thin Trans transverse ripple-marks tuff volcanic zone