TY - ECHAP
KW - Earth and Environmental Science
AU - R. Arzola
AU - R. Wynn
AU - D.G. Masson
AU - P. Weaver
AU - G. Lastras
AU - V. Lykousis
AU - D. Sakellariou
AU - J. Locat
AU - V. Lykousis
AU - D. Sakellariou
AU - J. Locat
AB - The Nazar\ e and Set\ ubal Canyons of the west Iberian margin are highly complex seafloor environments, displaying a range of sedimentary features and processes that reflect the transition from erosive upper to depositional lower canyon. Upper sections are characterised by a deeply incised, narrow, V-shaped thalweg, and frequent localised intra-canyon slope failures. Lower sections have a U-shaped floor with heterogeneous sediment distribution. Two types of gravity flow are observed: thin-bedded, finegrained deposits that may be the result of frequent turbidity currents generated by high sediment supply to canyon heads, and thicker, siliciclastic coarse sandy turbidites, probably generated by larger earthquake-triggered slope failures on much longer timescales. Our results highlight the complex interplay of sedimentary processes operating within major canyon systems.
CY - Dordrecht
N2 - The Nazar\ e and Set\ ubal Canyons of the west Iberian margin are highly complex seafloor environments, displaying a range of sedimentary features and processes that reflect the transition from erosive upper to depositional lower canyon. Upper sections are characterised by a deeply incised, narrow, V-shaped thalweg, and frequent localised intra-canyon slope failures. Lower sections have a U-shaped floor with heterogeneous sediment distribution. Two types of gravity flow are observed: thin-bedded, finegrained deposits that may be the result of frequent turbidity currents generated by high sediment supply to canyon heads, and thicker, siliciclastic coarse sandy turbidites, probably generated by larger earthquake-triggered slope failures on much longer timescales. Our results highlight the complex interplay of sedimentary processes operating within major canyon systems.
PB - Springer
PP - Dordrecht
PY - 2007
SN - 978-1-4020-6512-5
SP - 89
EP - 98
TI - Landslide And Gravity Flow Features And Processes Of The Nazar\ e And Set\ ubal Canyons, West Iberian Margin
UR - http://dx.doi.org/10.1007/978-1-4020-6512-5_10
VL - 27
ER -