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Description
"Darra Basanitoid (8.1 – 7.7 Ma): Columnar to irregularly jointed basanitoid lava flows, exposed on the
western and eastern sides of Quail Island, and overlie Lyttelton Volcanics between Taitapu
and Ahuriri. Lava flows on the north-western side of Quail Island are
flat lying with thin zones of auto-brecciation . North-eastern Darra
Basanitoid lavas overlie a basal yellow-brown, angular to sub-rounded, boulder to cobble
conglomerate, which overlies weathered Allandale Rhyolite."
Hampton, S.J. : https://ir.canterbury.ac.nz/handle/10092/4117
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