Continental slope geomorphology and tectonic control offshore northern Perth Basin, Western Australia  


Authors / CoAuthors

Rollet, N. | Jones, A.T. | McGiveron, S. | Grosjean, E. | Langhi, L. | Greinert, J.

Abstract

Slope failures with associated submarine slides, sediment accumulation along contourite drifts and focus seepage features have been interpreted from new sub-bottom profiler, multibeam bathymetry, side-scan sonar, echo-sounder data together with geochemical analyses of sediment samples along the continental slope off Western Australia. The processes recognised show the implication of slope instability and hydrocarbon seepage in shaping the continental slope geomorphology. The spatial correlation between regional seafloor features and reactivation of pre-existing faults suggests tectonics and seismic activity being the main potential triggering parameters for slope processes offshore northern Perth Basin. Geomechanical models have been used to test potential up-fault leakage using the present-day stress field and the results correlate with the seepage features observed in the study area. The marine survey results provide additional support for the presence of an active petroleum system in the northern Perth Basin; and combined with geomechanical models, the study helps reducing petroleum exploration and geohazards riks.

Product Type

nonGeographicDataset

eCat Id

74298

Contact for the resource

  Custodian

ED  

  Point of contact

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

Keywords

  • External Publication
( Theme )
  • landslides
( Theme )
  • petroleum exploration
( Theme )
  • bathymetry
( Theme )
  • earthquakes
( Theme )
  • geohazards
( Theme )
  • marine
Australian and New Zealand Standard Research Classification (ANZSRC)
  • Earth Sciences
  • Published_Internal

Publication Date

2012-06-26T00:00:00

Creation Date

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

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Creative Commons Attribution 4.0 International Licence    

Access - restricted

Use - license

Status

Purpose

Maintenance Information

unknown

Topic Category

geoscientificInformation

Series Information

Lineage

Unknown

Parent Information

Extents

[-30.0, -25.0, 111.0, 115.0]

Reference System

Spatial Resolution

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