122
Effects of Waves and Currents
a
b _ _ _ _ __
Fig. 4.22a, b. Effects of deep geostrophic currents. a Continental rise off the US. East Coast, 2.5 km
depth. Little or no evidence of current action. (Organism is a "sea whip", pennatulid coral). b Same
area, but 5 km depth. Current action is obvious from scour marks and lineations. Current flow is
ji-om lower rig hi 10 upper leji, about 20-30 cm/s. [Photos courtesy C. D. Hollister; see A. H. Bouma,
C. D. Hollister, 1973, SEPM Pacific Section, Short Course, Turbidites and deep water sedimentation, Anaheim]
Effects of Waves and Currents
a
b _ _ _ _ __
Fig. 4.22a, b. Effects of deep geostrophic currents. a Continental rise off the US. East Coast, 2.5 km
depth. Little or no evidence of current action. (Organism is a "sea whip", pennatulid coral). b Same
area, but 5 km depth. Current action is obvious from scour marks and lineations. Current flow is
ji-om lower rig hi 10 upper leji, about 20-30 cm/s. [Photos courtesy C. D. Hollister; see A. H. Bouma,
C. D. Hollister, 1973, SEPM Pacific Section, Short Course, Turbidites and deep water sedimentation, Anaheim]