Journal ArticleDOI
Lamprophyre dike intrusion and the age of the Alpine fault, New Zealand
Reads0
Chats0
TLDR
In this article, the orientations of intrusive rocks from a carbonatitic lamprophyre dike swarm and the history of emplacement relative to country-rock schist structures are compatible with intrusion into tension fractures and Riedel shears formed during initiation of the dextral wrench system of the Alpine fault.Abstract:
The orientations of intrusive rocks from a carbonatitic lamprophyre dike swarm and the history of emplacement relative to country-rock schist structures are compatible with intrusion into tension fractures and Riedel shears formed during initiation of the dextral wrench system of the Alpine fault. New U-Pb and Rb-Sr dates indicate a late Oligocene-early Miocene time of intrusion which, in turn, suggests a mid-Tertiary history for propagation of the Alpine fault plate boundary through South Island, New Zealand.read more
Citations
More filters
Journal ArticleDOI
The obliquely-convergent plate boundary in the South Island of New Zealand: implications for ancient collision zones
TL;DR: The Alpine Fault of New Zealand forms the western boundary of a zone of distributed deformation formed by the oblique convergence of continental crust belonging to the Pacific and Australian plates as mentioned in this paper.
Journal ArticleDOI
Tectonic reconstructions of New Zealand: 40 Ma to the Present
TL;DR: In this article, a reconstruction of the New Zealand subcontinent from 40 Ma to the present is presented, with assumptions that have constrained the model including semi-straight initial alignment of basement terranes and markers; Australian plate fixed; onset of Emerald Basin spreading at c. 45 Ma; and Pacific plate subduction north of New Zealand from c. 30 Ma.
Journal ArticleDOI
The Australia-Pacific boundary and Cenozoic plate motions in the SW Pacific: Some constraints from Geosat data
TL;DR: In this paper, the finite poles of Australia-Pacific rotation are calculated using a three-plate (Australia-Antarctica-Pacific) model and published Geosat data analyses of the Indian and Pacific Oceans.
Journal ArticleDOI
Balancing the plate motion budget in the South Island, New Zealand using GPS, geological and seismological data
TL;DR: In this paper, the authors interpret GPS, geological and seismological data describing the active deformation in the South Island, New Zealand by using an elastic, rotating block approach that automatically balances the Pacific/Australia relative plate motion budget.
Journal ArticleDOI
Shear heating in continental strike-slip shear zones:model and field examples
TL;DR: In this article, a two-layer (crust and upper mantle), finite diVerence steady-state thermomechanical model of a long-lived (several million years) strike-slip fault is presented, and its predictions compared with field observations from various major fault zones.