|Geotechnical property variability over an active plate margin in the eastern Banda Sea|
van Bergen Henegouw, C.N.; Richards, A.F. (1989). Geotechnical property variability over an active plate margin in the eastern Banda Sea. Neth. J. Sea Res. 24(4): 437-444
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579, more
|Authors|| || Top |
- van Bergen Henegouw, C.N.
- Richards, A.F.
Water content, bulk density and shear strength were measured on the sediments of box cores collected on the Snellius-II Expedition along three traverses crossing active plate margins in the eastern Banda Sea. A single geotechnical property value for each core has been calculated. These data for each traverse were plotted in profile against water depth and a summary of sedimentological and physiographical information was added to the profile. Average values by traverse are tabulated. A map is presented showing the areal distribution of each geotechnical property along the three traverses in the eastern Banda Sea. Water content tends to be high in areas of pelagic clay in the deeps and troughs and low in other areas. Shear strength tends to be high in the volcanic sediments and where the water depth is least. Sediments of the backarc basin have low shear strengths. No clear evidence was found that the shear strength of the sediments in the subduction zone shows any recognizable relationship to tectonism for the near surface sediments studied. However, the relatively higher water contents in the surficial sediments of the actively subducting Seram and Timor Troughs, compared to the lower water contents in the inactively subducting Aru Trough, may be related to tectonism.