Outcrops, road cuts, rock gardens, and other large exposures.
Skolithos tubes define this member of the Cambrian quartzite, north of Loch Assynt.
Is it a "Snowball Earth" tillite? Maybe!
Oldest fossils in the United Kingdom.
See if you can find the ammonite fossils in this hornfels ("basalt" according to the Neptunists).
Silurian aged Oriskany Formation quartz sandstone. Near Broadway, Virginia off of Brocks Gap Road.
Inside a narrow rift along the western margin of the Þingvellir Vallley. North American Plate to the left; Eurasian Plate to the right.
Columnar basalt at a seaside location in County Antrim.
Some basalt showing a well-developed weathering rind and columnar jointing.
Found cropping out along the beach at Barns Ness, east of Dunbar, Scotland.
Ultramafic rocks have experienced faulting at this southernmost spot where geologists are in the Idahoan part of the Pacific Time Zone.
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