The Seward Peninsula is primarily composed of metamorphic blueschist, with deposits of sand, gravel, silt, loess and a few glacier-deposited moraines.
2.
Part of the state is uplands of resistant metamorphic rock that were scraped by Pleistocene glaciers that deposited moraines and outwash on a large, sandy, arm-shaped peninsula called Cape Cod and the islands Martha's Vineyard and Nantucket to the south of Cape Cod.
3.
Craig Cerrig-gleisiad means'cliff of the salmon (-coloured ) rocks'and is a cirque formed by a glacier which deposited moraine and created a sheltered environment where the steep crags prevent sheep from accessing the rare Arctic alpine plants such as hawthorn on the lower slopes.
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