Early-Middle Jurassic stratigraphy of the Fortrose-Chaslands region, southernmost South Island, New Zealand

Pole, MS (2004) Early-Middle Jurassic stratigraphy of the Fortrose-Chaslands region, southernmost South Island, New Zealand. New Zealand Journal of Geology And Geophysics, 47 1: 129-139.

Author Pole, MS
Title Early-Middle Jurassic stratigraphy of the Fortrose-Chaslands region, southernmost South Island, New Zealand
Journal name New Zealand Journal of Geology And Geophysics   Check publisher's open access policy
ISSN 0028-8306
Publication date 2004
Sub-type Article (original research)
Volume 47
Issue 1
Start page 129
End page 139
Total pages 11
Editor R. Lynch
Place of publication New Zealand
Publisher The Royal Society of New Zealand
Collection year 2004
Language eng
Subject C1
260111 Other Stratigraphy (incl. Sequence Stratigraphy)
780104 Earth sciences
Abstract The 40 km of coastline from Fortrose to Chaslands Mistake (southeastern South Island, New Zealand) comprises sediments that are part of the Early-Middle Jurassic of the Murihiku Terrane. The sediments are dominantly fluvial with some marine beds and alluvial fan deposition, and display an evolution of fluvial style which progresses from perennial flow to seasonal flow. The McPhee Cove Conglomerate is a prominent unit to the north. It has been used to separate two formations which would otherwise, on inherent lithological grounds, be difficult to distinguish. This paper discusses several similar conglomerates which occur in the south, but which are separated from the type area of the McPhee Conglomerate by major tectonic disruption. Hence, the existing lithostratigraphic nomenclature to the north, including the McPhee Cove Conglomerate, cannot be simply extended southwards. The Fortrose-Chaslands area appears to consist of two tectonic blocks, the Slope Point Block and the Brothers Block, which are separated from each other and from the adjacent Papatowai Block by major strike faults (or fault zones). A change is proposed to the existing stratigraphy which involves recognising all terrestrial sediments as part of the False Island Formation. Four prominent clast-supported conglomerate horizons are named as members of the False Islet Formation: the White Head Conglomerate, Black Bluff Conglomerate. Hoiho Conglomerate, and Slope Point Conglomerate Members. The latter contains five named conglomerate beds.
Keyword Geology
Geosciences, Multidisciplinary
Murihiku Terrane
Jurassic
Gondwana
Conglomerate
Fossil Forest
Fluvial Sedimentology
White Head Conglomerate
Black Bluff Conglomerate
Hoiho Conglomerate
Slope Point Conglomerate
New Stratigraphic Names
Median Tectonic Zone
Bay
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2005 Higher Education Research Data Collection
School of Biological Sciences Publications
 
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Created: Wed, 15 Aug 2007, 03:45:44 EST