Seismic Imaging of Fracture Systems in Carbonates

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• Drainage basin size 234,000 km2
• Mean annual discharge 3.5 x103 m3s-1
• Sediment discharge 35 sand, 50 silt, 15 clay

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Surficial Geology
Hart et al., 1998
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Modern Sedimentation Rates Cesium 137
Hart et al., 1998
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• Cm -gt dm-scale intebedding of sand and mud
• Seasonal discharge variability with superimposed
  tides
• Sands deposited during spring peak discharges
  from suspension

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• Middle/lower delta slope submarine channel is
  erosional
• Sands deposits flanking channel are cohesive
  debris accumulations (not levees)

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• Cohesive and fluid sandy density current
  deposits at base of delta slope submarine channel
  system

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