Read e-book online A Continental Plate Boundary: Tectonics at South Island, New PDF

By David Okaya, Tim Stern, Fred Davey

ISBN-10: 0875904408

ISBN-13: 9780875904405

ISBN-10: 1118666143

ISBN-13: 9781118666142

Released by way of the yankee Geophysical Union as a part of the Geophysical Monograph sequence, quantity 175.

A Continental Plate Boundary
deals in a single position the main accomplished, updated wisdom for researchers and scholars to profit concerning the tectonics and plate dynamics of the Pacific-Australian continental plate boundary in South Island and concerning the software of recent geological and geophysical equipment. It examines what occurs whilst convergence and translation happen at a plate boundary by way of

  • Describing the geological and geophysical signature of a continental remodel 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 software of the double-sided, onshore-offshore seismic process for exploration of a slender continental island; and
  • Providing extra papers offering formerly unpublished results.

This quantity will end up priceless for seismologists, tectonophysicists, geodesists and potential-field geophysicists, geologists, geodynamicists, and scholars of the deformation of tectonic plates.

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Additional info for A Continental Plate Boundary: Tectonics at South Island, New Zealand

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SUMMARY South Island of New Zealand is a fragment of Gondwana that was formed by Paleozoic and Mesozoic subduction-accretion processes at the paleo-Pacific margin; it split from Gondwana during the Late Cretaceous; and was rent by dextral strike-slip displacement on the Alpine Fault and distributed deformation during the Cenozoic. , 1999]. Pre-Late Cretaceous basement rocks are a series of volcano-sedimentary accreted terranes, batholiths that intrude these terranes, and schist and gneiss metamorphic overprints on the sedimentary and plutonic rocks (Plate 2) [Mortimer, 2004].

In detail, the geomorphology of valleys and ridges appears unlikely to reach steady-state, due to the influence of cycles in fluvial erosion and glaciation [Herman and Braun, 2006]. Offshore Sedimentation and Volcanic Deposition Compared with the onshore glacial deposits, much more con­tinuous records of Quaternary glaciation and paleoenvironmental conditions appear to be preserved in marine sediments. , 2004]. 5% of sediment input into the world ocean for such a small landmass. , glacial lakes) and shelf sedimentation.

Material is carried predominantly in rivers as suspended load, with dissolved load and bed load both <5% [Adams, 1980a]. Present yields from glaciated and non-glaciated basins do not appear to differ significantly [Griffiths, 1979; Griffiths, 1981], leading to a hypothesis that erosion rates may be equal or higher during deglaciation than when valleys are protected by a cover of ice and receive a greater proportion of their precipitation as snow [Whitehouse, 1986]. Gravitational mass wasting appears to be the primary mode of erosion within the Southern Alps.

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A Continental Plate Boundary: Tectonics at South Island, New Zealand by David Okaya, Tim Stern, Fred Davey


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