The
Pacific margin of the Antarctic Peninsula is one of the margins whith
a wealth of geophysical and geological data sets from the continental
rise sediment ridges between 63ºS and 69ºS (e.g., Rebesco
and Camerlenghi, 1994; McGinnis and Hayes, 1995; Rebesco et al., 1996;
Dowdeswell et al., 2004). Large sediment mounds and drifts on the Antarctic
Peninsula continental rise have been described as typically asymmetric,
with a steeper rougher side and an opposite gentler side (Rebesco and
Camerlenghi, 1994; Rebesco et al., 1996; Dowdeswell et al., 2004). The
gentler side has a smooth bathymetry and the steeper side has an irregular
surface evidence for mass wasting processes.The two largest drifts are
elongated in a direction ortogonal to the margin and are 150 km long,
more than 50 km wide and have 1 km of relief (Rebesco et al., 1996).
For a summary about continental rise seismic stratigraphy and sedimentation
in the Pacific margin of the Antarctic Peninsula link to ODP
LEG 178 |
