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Consolidation patterns during initiation and evolution of a plate-boundary decollement zone: northern Barbados accretionary prism

  • J. Casey Moore*
  • , Adam Klaus
  • , Nathan L. Bangs
  • , Barbara Bekins
  • , Christian J. Bücker
  • , Warner Brückmann
  • , Stephanie N. Erickson
  • , Olav Hansen
  • , Thomas Horton
  • , Peter Ireland
  • , Candace Olson Major
  • , Gregory F. Moore
  • , Sheila Peacock
  • , Saneatsu Saito
  • , Elizabeth J. Screaton
  • , John W. Shimeld
  • , Philip Henry Stauffer
  • , Tuncay Taymaz
  • , Philip A. Teas
  • , Tomochika Tokunaga
  • *Bu çalışma için yazışmadan sorumlu yazar
  • University of California at Santa Cruz
  • Texas A&M University
  • University of Texas at Austin
  • United States Geological Survey
  • Leibniz Institute for Applied Geophysics
  • Helmholtz Centre for Ocean Research Kiel
  • University of Utah
  • Equinor ASA
  • Schlumberger
  • Columbia University
  • University of Hawai'i at Mānoa
  • University of Birmingham
  • The University of Tokyo
  • University of Florida
  • Dalhousie University

Araştırma sonucu: Dergiye katkıMakalebilirkişi

81 Atıf (Scopus)

Özet

Borehole logs from the northern Barbados accretionary prism show that the plate-boundary decollement initiates in a low-density radiolarian claystone. With continued thrusting, the decollement zone consolidates, but in a patchy manner. The logs calibrate a three-dimensional seismic reflection image of the decollement zone and indicate which portions are of low density and enriched in fluid, and which portions have consolidated. The seismic image demonstrates that an underconsolidated patch of the decollement zone connects to a fluid-rich conduit extending down the decollement surface. Fluid migration up this conduit probably supports the open pore structure in the underconsolidated patch.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)811-814
Sayfa sayısı4
DergiGeology
Hacim26
Basın numarası9
DOI'lar
Yayın durumuYayınlandı - 1998

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