New Zealand Journal of Geology and Geophysics abstracts
Pahau Terrane type locality: fan delta in an accretionary
prism trench-slope basin
Kari N. Bassett
Richard Orlowski
Department of Geological Sciences
University of Canterbury
Private Bag 4800
Christchurch, New Zealand
email: kari.bassett@canterbury.ac.nz
Abstract The sediments of the Pahau Terrane,
part of the Torlesse Superterrane, have never been adequately described
or formally defined, although an unofficial type area in the Pahau
River exists. This research formalises the type locality and interprets
the sedimentology and tectonic setting of the deposits. Four
well-defined lithofacies are able to be distinguished in the area:
mudstone, interbedded mudstone-sandstone, sandstone, and conglomerate.
We propose the Lochiel Formation to encompass these lithofacies
and the Mt Saul Member for the conglomeratic bodies found
within the Lochiel Formation. The Pahau River Group is to
encompass the Lochiel Formation and future formations defined within
the Cretaceous Torlesse Supergroup and is envisioned to extend over a
large part of the Pahau Terrane.
Keywords Pahau Terrane; Lochiel Formation;
Mt Saul Member; conglomerate; fan delta; Torlesse Superterrane;
accretionary prism; Mt Cropp Fault; new structural names; new
stratigraphic names
G03052; Received 26 May 2003; accepted 30 March 2004; Online
publication date 1 December 2004
New Zealand Journal of Geology & Geophysics, 2004, Vol. 47:
603–623
0028–8306/04/4704–0603© The Royal Society of New Zealand 2004
PDF file of entire paper: Print-quality
(9599K) | screen-quality (891K)
This year's abstracts |
Journal home page |
All abstracts |
Publishing home page
