rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Structural and Morphologic Study of Shatsky Rise Oceanic Plateau in the Northwest Pacific Ocean from 2D Multichannel Seismic Reflection and Bathymetry Data and Implications for Oceanic Plateau Evolution
  name:
    name part: Zhang, Jinchang
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Sager, W. W. (William W.)
    role:
      role term: thesis advisor.
  name:
    name part: Yang, Zuosheng
    role:
      role term: thesis advisor.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2015
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: Shatsky Rise is one of the largest oceanic plateaus, a class of volcanic features whose formation is poorly understood. It is also a plateau that was formed near spreading ridges, but the connection is unclear. The geologic structure and morphology of Shatsky Rise oceanic plateau provides key observations that can help understand its formation. Deep penetrating 2D multichannel seismic (MCS) reflection profiles and high-resolution multi-beam sonar data were acquired over the southern half of Shatsky Rise on R/V Marcus G. Langseth during two cruises. The MCS profiles allow us to image Shatsky Rise's upper crustal structure and Moho structure with unprecedented detail, and the multi-beam bathymetry data allow us to produce an improved bathymetric map of the plateau. MCS profiles and bathymetry data show that two of the volcanic massifs within Shatsky Rise are immense central volcanoes. Tamu Massif, the largest (~450 x 650 km) and oldest (~145 Ma) volcano, is a single central volcano with rounded shape and shallow flank slopes (<0.5°-1.5°), characterized by lava flows emanating from the volcano center and extending hundreds of kilometers down smooth, shallow flanks to the surrounding seafloor. Ori Massif is another large volcano that is similar, but smaller in size than Tamu Massif. The morphology of the massifs implies formation by extensive and far ranging lava flows emplaced at small slope angles. The relatively smooth flanks of the massifs imply that the volcanoes were not greatly affected by rifting due to spreading ridge tectonics. Several down-to-basin faults observed on the flanks of the massifs are not parallel to magnetic lineations, suggesting that they were not formed by seafloor spreading. The Moho of Shatsky Rise starts shallow (~6-7 km) beneath normal crust at the distal flanks and dips (~3°-5°) towards the center of plateau massifs, reaching maximum thickness of ~ 30 km. Shatsky Rise crustal structure is consistent with the Moho topography of isostatical…
  note: by Jinchang Zhang.
  note: "Major Subject: Oceanography"
  note: Includes vita.
  note: Doctor of Philosophy Texas A & M University 2014 http://hdl.handle.net/1969.1/152629
  note: Includes bibliographical references.
  note: Text (Dissertation)
  subject:
    topic: Major Oceanography
  subject:
    topic: Shatsky Rise
  subject:
    topic: Oceanic plateau
  subject:
    topic: Large igneous provinces
  subject:
    topic: Volcanology
  subject:
    topic: Marine seismic
  subject:
    topic: Bathymetry
  identifier: http://hdl.handle.net/1969.1/152629
  record info:
    record content source: TXA
    record creation date: 150211
    record change date: 20151206125813.0
    record identifier: in00003518673
    language of cataloging:
      language term: eng