Port-Aux-Basques Beach Bedrock Geology click on any picture for a larger view
At the first outcrop we came across, there were two types of metamorphic
rock present. One layer was a kyanite, garnet, biotite, and staurolite
schist (see photo below). The other layer, which could either be a metamorphosed
basalt sill or just the result of a different interbedded layer in the
parent material, was an amphibolite, containing feldspar and hornblende..jpg)
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While walking along the shore, we found some large garnet crystals exposed
in the bedrock.
Changes in the Bedrock
Further down the beach, the appearance of the outcrop changes. The schist
is more muscovite-rich, and it is interlayered with a green calc-silicate
rock. As a resultm the outcrop has an overall lighter appearance. There
are also some small scale folds present. This bedrock is most likely composed
of metamorphosed limestone interbedded with shale. The seagulls also seem
to like it here..jpg)
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Here are some of the small, open folds.
A picture of the group with Port-Aux-Basques in the background.jpg)