New Zealand Journal of Geology and Geophysics abstracts
Lithostratigraphy of the Te Kuiti Group: a revision
P. J. WHITE1
B. C. WATERHOUSE2
Institute of Geological and Nuclear Sciences
P.O. Box 2225
Auckland, New Zealand
1Present address: KRTA Ltd, P.O. Box 9806, Newmarket,
Auckland, New Zealand.
2Present address: Broomfield Rd, RD1, Howick, Auckland,
New Zealand.
Abstract The Te Kuiti Group in the South Auckland area comprises
nine formations of late Eocene to early Miocene age, and is dominated
by calcareous sandstones, siltstones, and limestones. This paper
revises the stratigraphy and nomenclature of the group. Te Akatea
Siltstone and Whaingaroa Siltstone are renamed
Te Akatea Formation and
Whaingaroa Formation, respectively,
and the base of Te Akatea Formation is redefined. Minor changes of
nomenclature are proposed for members of Glen Massey and Mangakotuku
Formations, to avoid duplication of the formation name. Four new
members are proposed within Aotea Formation:
Patikirau Siltstone and
Mangiti Sandstone to the north of Mt
Karioi, and
Kihi Sandstone and
Hauturu Sandstone to the south.
Two new members are distinguished within Whaingaroa Formation:
Orotangi Sandstone and
Kotuku Siltstone. Existing type
localities for Te Akatea and Aotea Formations are replaced by more
representative and complete sections, and additional reference sections
are proposed for Aotea and Whaingaroa Formations. The geographic
distribution of formations and members highlights a significant facies
change at the approximate latitude of Mt Karioi: siltstones predominate
to the north and sandstones to the south.
Keywords lithostratigraphy; Te Kuiti Group; Mangakotuku
Formation; Rotowaro Siltstone; Glen Massey Formation; Ahirau Sandstone;
Whaingaroa Formation; Kotuku Siltstone; Orotangi Sandstone; Aotea
Formation; Mangiti Sandstone; Patikirau Siltstone; Hauturu Sandstone;
Kihi Sandstone; Te Akatea Formation; Orahiri Limestone; Waitomo
Sandstone; Otorohanga Limestone; new stratigraphic names
Received 3 November 1992; published 25 June 1993
New Zealand Journal of Geology & Geophysics, 1991, Vol. 36:
257—266
0028Ð8306/06/3602—0257 ©The Royal Society of New Zealand 1991
PDF file of entire paper: medium quality
(4313K); (scanned from paper original: notes about this process).
Digitisation of this article from the printed journal was kindly
facilitated by the Geological Society of New Zealand
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