Portvasgo is a small cove on the north coast of Scotland. It contains
spectacular deformation structures associated with shearing of a metasedimentary
sequence (called the Moine) and its older basement (the Lewisian). You
can see examples of the original state of these rocks by clicking
here. These units are both strongly deformed by shearing associated
with building the ancient Caledonian mountains (about 430 million years
ago). You can see the types of deformation structures found by using the
picture gallery.
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