Structure of the Continental Margin and Tectonism at the Eastern Aleutian Trench

Research Article| December 01, 1972 Structure of the Continental Margin and Tectonism at the Eastern Aleutian Trench ROLAND VON HUENE ROLAND VON HUENE U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar Author and Article Information ROLAND VON HUENE U.S. Geological Survey, Menlo Park, California 94025 Publisher: Geological Society of America Received: 19 Jan 1972 Revision Received: 26 Apr 1972 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1972, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1972) 83 (12): 3613–3626. https://doi.org/10.1130/0016-7606(1972)83[3613:SOTCMA]2.0.CO;2 Article history Received: 19 Jan 1972 Revision Received: 26 Apr 1972 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation ROLAND VON HUENE; Structure of the Continental Margin and Tectonism at the Eastern Aleutian Trench. GSA Bulletin 1972;; 83 (12): 3613–3626. doi: https://doi.org/10.1130/0016-7606(1972)83[3613:SOTCMA]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 New seismic reflection data along closely spaced lines reveal deeper structures than did earlier records. The new records show sediment in the trench continuing as much as 12 km landward under the continental slope, that large slumps and extensional structures are common on the slope, and suggest that in earlier periods the sea floor now under the trench was receiving sediment from an eastern source rather than from the present western source. Large tectonic displacements appear to be absent from oceanic basement beneath the continental margin because undisturbed linear oceanic magnetic anomalies and a fracture zone continue from the abyssal plain at least to the continental shelf. However, since vertical displacements in the overlying sediment are greater than any in the basement, thrust faults are indicated even though they are not visible in the reflection records. No single zone of deformation marks the emergence of the Benioff zone, but instead the zone probably emerges in the whole complex of tectonic structures across the continental margin. There are enough data to estimate roughly the maximum amount of abyssal sediment that may have been plastered against the continent during the Tertiary. 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.