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Archive for the ‘Geology’ Category

Our dynamic beach

Posted by SCe Comments Off on Our dynamic beach

Phil Vine in the Herald on coastal erosion and accretion at Awhitu, Piha and Muriwai. quotes Mischa and Steve Davis, Jim Dahm and others. http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=11195493

Categories: Geology, issues, news

Volcanic past of Piha

Posted by SCe Comments Off on Volcanic past of Piha

The dramatic rugged landscapes of Piha and the surrounding area were created by volcanic activity millions of years ago. An undersea volcano, Waitakere Volcano, 5 or 6 times the size of Ruapehu, Ngaruahoe and Tongariro combined, existed 20 km west of today’s Waitaker Ranges and erupted periodically over a 6 to 7 million peridocally eventually  [ Read More ]

Categories: Geology, Uncategorized

Puaotetai Bay

Posted by SCe Comments Off on Puaotetai Bay

This bay is located between Taitomo Island and the mainland. Its name denotes the foam that piles up on the beach in stormy weather. Opening onto the beach is a vent through Taitomo Island called by Pakeha “the Keyhole”. A ledge created by locals leads through the tunnel to a fishing platform, not to be  [ Read More ]