Story: West Coast region

Greenland Group

Greenland Group

The Greenland Group is one of the most widespread rocks on the western side of the Alpine Fault. It is a thick, uniform sequence of quartz-rich greywacke and argillite, deposited in early Ordovician time (about 490 million years ago). This outcrop is at Seventeen Mile Bluff, on the coast north of Greymouth.

Rocks similar to the Greenland Group are found in Antarctica and eastern Australia. They were originally part of the ancient Gondwana continent, which later split and drifted apart.

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How to cite this page:

Simon Nathan, 'West Coast region - Geology and landscapes', Te Ara - the Encyclopedia of New Zealand, (accessed 21 July 2024)

Story by Simon Nathan, updated 1 Sep 2016