Portal de Periódicos da CAPES

Survival of a submarine canyon during long-term outbuilding of a continental margin

2012; Geological Society of America; Volume: 40; Issue: 6 Linguagem: Inglês

10.1130/g33178.1

1943-2682

David Amblàs, Thomas P. Gerber, B. De Mol, Roger Úrgeles, Daniel García‐Castellanos, Miquel Canals, Lincoln F. Pratson, NICHOLAS ROBB, Jason Canning,

Geophysical Methods and Applications

Research Article| June 01, 2012 Survival of a submarine canyon during long-term outbuilding of a continental margin David Amblas; David Amblas 1GRC Geociències Marines, Departament d'Estratigrafia, Paleontologia i Geociències Marines, Universitat de Barcelona, E-08028 Barcelona, Catalonia, Spain Search for other works by this author on: GSW Google Scholar T.P. Gerber; T.P. Gerber 2Department of Geoscience, Indiana University of Pennsylvania, Indiana, Pennsylvania 15705, USA Search for other works by this author on: GSW Google Scholar B. De Mol; B. De Mol 3GRC Geociències Marines, Parc Científic de Barcelona, Universitat de Barcelona, E-08028 Barcelona, Catalonia, Spain Search for other works by this author on: GSW Google Scholar R. Urgeles; R. Urgeles 4Departament de Geologia Marina, Institut de Ciències del Mar, CSIC, E-08003 Barcelona, Catalonia, Spain Search for other works by this author on: GSW Google Scholar D. Garcia-Castellanos; D. Garcia-Castellanos 5Group of Dynamics of the Lithosphere, Institut de Ciències de la Terra 'Jaume Almera', CSIC, E-08028 Barcelona, Catalonia, Spain Search for other works by this author on: GSW Google Scholar M. Canals; M. Canals 1GRC Geociències Marines, Departament d'Estratigrafia, Paleontologia i Geociències Marines, Universitat de Barcelona, E-08028 Barcelona, Catalonia, Spain Search for other works by this author on: GSW Google Scholar L.F. Pratson; L.F. Pratson 6Division of Earth and Ocean Sciences, Duke University, Durham, North Carolina 27708, USA Search for other works by this author on: GSW Google Scholar N. Robb; N. Robb 7BG Group, Thames Valley Park, Reading RG6 1PT, UK Search for other works by this author on: GSW Google Scholar Jason Canning Jason Canning 7BG Group, Thames Valley Park, Reading RG6 1PT, UK Search for other works by this author on: GSW Google Scholar Author and Article Information David Amblas 1GRC Geociències Marines, Departament d'Estratigrafia, Paleontologia i Geociències Marines, Universitat de Barcelona, E-08028 Barcelona, Catalonia, Spain T.P. Gerber 2Department of Geoscience, Indiana University of Pennsylvania, Indiana, Pennsylvania 15705, USA B. De Mol 3GRC Geociències Marines, Parc Científic de Barcelona, Universitat de Barcelona, E-08028 Barcelona, Catalonia, Spain R. Urgeles 4Departament de Geologia Marina, Institut de Ciències del Mar, CSIC, E-08003 Barcelona, Catalonia, Spain D. Garcia-Castellanos 5Group of Dynamics of the Lithosphere, Institut de Ciències de la Terra 'Jaume Almera', CSIC, E-08028 Barcelona, Catalonia, Spain M. Canals 1GRC Geociències Marines, Departament d'Estratigrafia, Paleontologia i Geociències Marines, Universitat de Barcelona, E-08028 Barcelona, Catalonia, Spain L.F. Pratson 6Division of Earth and Ocean Sciences, Duke University, Durham, North Carolina 27708, USA N. Robb 7BG Group, Thames Valley Park, Reading RG6 1PT, UK Jason Canning 7BG Group, Thames Valley Park, Reading RG6 1PT, UK Publisher: Geological Society of America Received: 04 Jan 2012 Accepted: 16 Jan 2012 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2012 Geological Society of America Geology (2012) 40 (6): 543–546. https://doi.org/10.1130/G33178.1 Article history Received: 04 Jan 2012 Accepted: 16 Jan 2012 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation David Amblas, T.P. Gerber, B. De Mol, R. Urgeles, D. Garcia-Castellanos, M. Canals, L.F. Pratson, N. Robb, Jason Canning; Survival of a submarine canyon during long-term outbuilding of a continental margin. Geology 2012;; 40 (6): 543–546. doi: https://doi.org/10.1130/G33178.1 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 SocietyGeology Search Advanced Search Abstract Net-depositional submarine canyons are common in continental slope strata, but how they survive and prograde on constructional margins is poorly understood. In this study we present field evidence for the coevolution of a submarine canyon and the adjacent continental slope. Using a three-dimensional seismic data cube that images the Ebro margin (northwest Mediterranean), we identify a preserved canyon on a middle Pleistocene paleosurface and relate it directly to its expression on the present-day seafloor. A subparallel stacking pattern of seismic reflectors, similar to that seen between prograding clinoforms in intercanyon areas, is observed between the modern and paleocanyon thalwegs. The concavity of the modern long profile differs from the convex-concave long profile on the middle Pleistocene surface, suggesting a long-term change in canyon sedimentation. We interpret this change as a shift to a canyon dominated by turbidity currents from one strongly influenced by the pattern of sedimentation that built the open-slope canyon interfluves. We find support for our interpretation in previous studies of the Ebro margin. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.