Sound-velocity characteristics of sediment from the eastern South American margin

Research Article| May 01, 1977 Sound-velocity characteristics of sediment from the eastern South American margin ROBERT E. HOUTZ ROBERT E. HOUTZ 1Lamont-Doherty Geological Observatory of Columbia University, Palisades, New York 10964 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1977) 88 (5): 720–722. https://doi.org/10.1130/0016-7606(1977)88<720:SCOSFT>2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation ROBERT E. HOUTZ; Sound-velocity characteristics of sediment from the eastern South American margin. GSA Bulletin 1977;; 88 (5): 720–722. doi: https://doi.org/10.1130/0016-7606(1977)88<720:SCOSFT>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract The eastern margin of South America has been divided into 14 zones, each with a characteristic sound-velocity distribution relative to depth below the sea floor, as determined from sonobuoy data. Regressions of sound-velocity data determined from one-way travel time for each region can now be used to compute thickness from vertical reflection data.The velocity characteristics of the Pelotas Basin and Pelotas Rise are similar to those of the Amazon Cone and some other large deltaic deposits, which suggests that the discharge of the Rio de la Plata may have formerly been diverted along the shelf to the north. The velocity characteristics of the Rio Colorado Basin show that it is distinct from and cuts across the Argentine shelf and Argentine Rise. The Falkland Plateau velocity data are identical to the Argentine Rise contourites, suggesting a common provenance. Velocity characteristics in the adjacent Pelotas and Santos Basins are quite different, suggesting that the Torres Arch has been an important barrier for some time. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.