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Description
"Stoddart Basalt (7.0 – 5.8 Ma) The final phase of Banks Peninsula volcanic activity resulted in 20km³ of sheet flows and lava plugs on the eroding Banks Peninsula volcanoes and the eroded interior of Lyttelton Volcano. Exposures are at; Quail Island, Diamond Harbour to Purau Valley, Ripapa Island and associated peninsula, Kaituna Valley, between Taitapu and Ahuriri, and at Halswell Quarry. At Quail Island, Stoddart Basalt overlies a thick sequence of brown, yellow-brown, matrix to clast supported, pebble to boulder conglomerate, with channelized sandstone layers, which rest unconformably on underlying Kaioruru Hawaiite. Purau Valley to Diamond Harbour exposure is the largest accumulation of Stoddart Basalt, forming the 5km long Diamond Harbour dip slope." Hampton, S.J. : https://ir.canterbury.ac.nz/handle/10092/4117
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