By David Okaya, Tim Stern, Fred Davey
Released via the yankee Geophysical Union as a part of the Geophysical Monograph sequence, quantity 175.
A Continental Plate Boundary bargains in a single position the main accomplished, updated wisdom for researchers and scholars to benefit in regards to the tectonics and plate dynamics of the Pacific-Australian continental plate boundary in South Island and in regards to the software of contemporary geological and geophysical tools. It examines what occurs while convergence and translation ensue at a plate boundary by means of
- Describing the geological and geophysical signature of a continental rework fault;
- Identifying the various vertical and lateral styles of deformation on the plate boundary;
- Assessing an obvious seismicity hole at the plate boundary fault and fast-moving plate motions;
- Comparing this plate boundary to different international convergent continental strike-slip plate boundaries;
- Documenting the application of the double-sided, onshore-offshore seismic procedure for exploration of a slim continental island; and
- Providing extra papers providing formerly unpublished results.
This quantity will turn out necessary for seismologists, tectonophysicists, geodesists and potential-field geophysicists, geologists, geodynamicists, and scholars of the deformation of tectonic plates.
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Extra resources for A Continental Plate Boundary: Tectonics at South Island, New Zealand
24 Regional Geological Framework of South Island, New Zealand Cretaceous history of New Zealand are primarily inferred from geological observations (discussed below). The Gondwana break-up phase was associated with widespread rifting, basin formation, and eventual formation of ocean crust at the Pacific and Tasman ridges (Plate 1B). , 1975]; hence, widespread seafloor spreading is inferred to have started during chron 33r (79–83 Ma) and dates the time that New Zealand separated from Australia and Antarctica (Plate 1B).
Original sedimentary features are almost entirely obscured in Alpine schist, but the westernmost part beside the Alpine Fault contains a relatively high proportion of pelitic schist and mafic metavolcanic greenschist, with only minor psammitic schist. The name Aspiring lithologic association is used to describe this assemblage of rock derived from distal oceanic sediments, which was first recognised in Otago [Craw, 1984; Mortimer, 1993] but is now extended to northern South Island [Cox and Barrell, 2007; Nathan et al.
Litchfield, 2001; Stirling, 1990, 1991; Yeats, 1987]. In the Otago region, the erosion surface has been offset into a series of parallel flattopped mountain ridges (15 to 20 km-wavelength) with little or no sediment cover. The surface is locally modified and dissected by streams on the ridges, but the unconformity is well-preserved beneath Cenozoic cover in elongate valleys beneath the ridges (Figure 4). Plate convergence has resulted in up to 2000 m relief, currently expressed by episodic fault activity and cumulative slip rates of ca.
A Continental Plate Boundary: Tectonics at South Island, New Zealand by David Okaya, Tim Stern, Fred Davey