Inside a narrow rift along the western margin of the Þingvellir Vallley. North American Plate to the left; Eurasian Plate to the right.
Some basalt showing a well-developed weathering rind and columnar jointing.
Found cropping out along the beach at Barns Ness, east of Dunbar, Scotland.
Columnar basalt at a seaside location in County Antrim.
Ultramafic rocks have experienced faulting at this southernmost spot where geologists are in the Idahoan part of the Pacific Time Zone.
Unconformable contact between the Lewisian gneiss (3.0 Ga) and the Torridonian Group (1.0 Ga).
Dike that cross-cuts schist, north side of the beach.
Folded turbidites of the Smaull Greywacke at Saligo Bay, Islay, Scotland.
West of Quincy, there are big gravel dunes deposited subaqueously by the Glacial Lake Missoula outburst floods.
Tombolo connecting "Mainland" Shetland to St. Ninian's Isle, Shetland Islands, Scotland.
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