Geology Reference
In-Depth Information
(1)
Initial coastal
topography
Ice-rich
unconsolidated
sediments
(2)
Rising sea level
and coastal erosion
and retreat;
lake drainage
by coastal retreat
Thermokarst
lakes
Coastal
sedimentation
(Longshore
drift-waves
and currents)
(3)
Development of
spits and bars
Areas of rapid
coastal retreat
Longshore drift
(Currents:
wave action)
(4)
Development of
barrier islands
(5)
Continued
coastal retreat
and barrier
retreat
Figure 10.13.
Typical coastal evolution in lowland thermokarst terrain adjacent to the Beaufort
Sea that is subject to a slowly transgressing sea level, according to Ruz et al. (1992).
