File:The Quarterly journal of the Geological Society of London (14096530333).jpg

CFRIOSITY-SHOP BED IN CANTERBTJHT, NEW ZEALAND.
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whether the Awatere series is the equivalent of the Awamoa series.
'Now neither Dr. Hector nor Mr. M'^Kay gives any proof of this
land-surface ; but Mr. M'^Kay told me that his reason for assuming its
existence was the scoriaceous nature of some of the rocks, which is
quite insufficient. Also I fail to see in Mr. McKay's Report any
evidence at all of an unconformity. He certainly gives a section
(No. 3) showing an unconformity ; but there must be some mistake,
as the unconformity is j^laced between the Hutchinson' s-quarry bed
and volcanic tuffs which underlie the Ototara limestone, while the
argument is founded on the assumption that the tuff's overlie the
Ototara limestone. ^Yhen I examined Ototara Cape in 1873 I did
not notice any unconformity ; but I have had no opportunity of
examining the locality since Mr, M'^Kay's Eeport was published.
Cape Oamaru is formed by an old volcano, which has broken through
the Ototara limestone and was active when the marine beds of
Hutchinson's quarry were being deposited. Also the outlier of the
Awamoa series on the " Cretaceo-Tertiary greensands and coal-grits,"
in the Waireka Yalley, proves an unconformity between the Awamoa
series and the Hutchinson's-quarry beds (which are missing), and
Pig. 2. — Majp of the Valley of the Waitaki mid neighbouring region.