SEISMIC ACTIVITY AND SEDIMENT DISTRIBUTION ON THE WILKES LAND AND TERRE ADELIE MARGINS, EAST ANTARCT

1
SEISMIC ACTIVITY AND SEDIMENT DISTRIBUTION ON THE
WILKES LAND AND TERRE ADELIE MARGINS, EAST
ANTARCTICA

• By
• Mark Sparks

2
(No Transcript)
3
(No Transcript)
4
(No Transcript)
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
Conclusion

• Seismic reflection data indicates the presence of
  major sedimentary basins along continental
  margin.
• Rift and pre-rift sediments are concentrated in a
  margin-parallel margin.
• Seismic correlation indicates sediments are of
  Late Jurassic to mid-Cretaceous age with a
  thickness of 4-5 km.
• Post-rift sediments are characterized by major
  regional unconformity.
• Unconformity is thought to mark the onset of
  glaciation of East Antarctica, but no correlation
  found during this study.
• Post-Middle Eocene section is much thicker than
  the underlying post-rift section due to high
  sediment influxes
• Megasequence sediments reflect that deep-marine
  processes were important in lateral sediment
  transport.

10
Any questions?