Tham khảo tài liệu 'earth sciences part 4', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 110 Earth Sciences Fig. 13. TOPAS seismic profile which shows the main sedimentary structure and seismic facies of the Baraza Slide. From Ercilla et al. 2009 . See the location on Fig. 11. slide model combines extensional and compressional deformations. The extensional domain occurs at the slide scar where tensional failure occurs and at foot of the scar where the postmud-flow sediments are non-affected by outflowing features. The post-mud-flow level moves with a shear-dominated movement along the plane of the scar. Its stress originates the deformational an outflowing features in fact the anticline folds water escape structures and their particular size distribution the concomitant occurrence of slope breaks on the seafloor and upper surface of the mudflow deposits all together would represent the structural criteria revealing the absorption of the compressional deformation. Analysis of the physical-geotechnical properties and texture in the PlioceneQuaternary sediments from the Madeira Abyssal Plain This case study is centred on the analysis and the relationship of sedimentologic changes with the physical properties acquired on the upper 200 m of continuous coring at sites 950a to 952a of ODP Leg 157 Baraza et al. 1996 Schmincke et al. 1995 which recovered more than 1000 m thick sediment sequence from the deep floor of the Madeira Abyssal Plain Fig. 14 . Four lithologic units define the Eocene to Quaternary sedimentary stratigraphy of the Madeira Abyssal Plain Schmincke et al. 1995 . The upper 200 m of cores studied corresponds to the Unit I Pleistocene to middle Miocene . It consists of turbidite layers interbedded with pelagic nannafossil oozes. There are three primary types of turbidites volcaniclastic organic-rich and calcareous originated from volcanic islands the northwestern African margin and seamounts respectively. Results of grain-size analysis show homogeneity of grain-size distributions among all three sites. Attending to the percentages of the .
