View in EDS PDF Full Text

Quaternary sedimentation and active faulting along the Ecuadorian shelf: preliminary results of the ATACAMES Cruise (2012).

Saved in:
Bibliographic Details
Title: Quaternary sedimentation and active faulting along the Ecuadorian shelf: preliminary results of the ATACAMES Cruise (2012).
Authors: Michaud, F., Collot, J., Martillo, C., Hernández, M., Gonzalez, M., Ponce, G., Proust, J.1, Pouderoux, H.1, Lebrun, J.2, Min, L.2, Witt, C.3, Ratzov, G.4, Loayza, G.5, Penafiel, L.6, Schenini, L.7, Dano, A.7, Barba, D.8, Urresta, A.8, Calderon, M.9
Source: Marine Geophysical Research. Mar2015, Vol. 36 Issue 1, p81-98. 18p.
Subjects: Subduction, Plate tectonics, Geologic faults, Geophysics research
Geographic Terms: Ecuador
Abstract: Selected high-resolution seismic-reflection profiles and multibeam bathymetry acquired along the convergent Ecuador margin during the ATACAMES cruise on onboard the R/V L'Atalante (Jan.15-Feb.18, 2012) allow a preliminary evaluation of the neotectonic development and stratigraphic evolution of the margin based on the sismo-stratigraphic analysis of Quaternary sediment preserved on the margin shelf and upper slope. We present three major preliminary results. (1) The evolution of the Esmeraldas, Guayaquil and Santa Elena canyons. The head of the Esmeraldas canyon is the location of a continuous significant sediment transport. The Guayaquil canyon shows several episodes of deposition and incision. Aggrading sedimentation pattern in the canyon records several changes in relative sea-level. The subsidence of the Gulf of Guayaquil probably contributes to the good preservation of the canyon filling stages. The Santa Elena canyon is controlled by a SW-NE trending normal fault. (2) Variations of sediment accumulation and relative vertical motions are shown along-strike the shelf edge. Offshore the uplifted Manta peninsula, a pronounced subsidence of the shelf edge is documented by sedimentary clinoforms that have deposited in a morphological reentrant, and have migrated upslope testifying of a local subsidence meanwhile the adjacent La Plata Island area underwent uplift. In the Esmeraldas canyon area, a local uplift of the shelf is documented. (3) Two neotectonic fault systems with a possible transcurrent component are imaged across the shelf edge and upper margin slope offshore Jama, and Cape Galera. This possible transcurrent motion could be related to the reactivation of ancient faults of the upper plate by the subduction. These preliminary results indicate that the ATACAMES data set has a strong potential to evaluate the spatial and temporal contribution of tectonic and climate changes on the structural development and stratigraphic evolution of the Ecuador continental margin. [ABSTRACT FROM AUTHOR]
Copyright of Marine Geophysical Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 101148974
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Quaternary sedimentation and active faulting along the Ecuadorian shelf: preliminary results of the ATACAMES Cruise (2012).
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Michaud%2C+F%2E%22">Michaud, F.</searchLink><br /><searchLink fieldCode="AR" term="%22Collot%2C+J%2E%22">Collot, J.</searchLink><br /><searchLink fieldCode="AR" term="%22Martillo%2C+C%2E%22">Martillo, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Hernández%2C+M%2E%22">Hernández, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Gonzalez%2C+M%2E%22">Gonzalez, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Ponce%2C+G%2E%22">Ponce, G.</searchLink><br /><searchLink fieldCode="AR" term="%22Proust%2C+J%2E%22">Proust, J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Pouderoux%2C+H%2E%22">Pouderoux, H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lebrun%2C+J%2E%22">Lebrun, J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Min%2C+L%2E%22">Min, L.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Witt%2C+C%2E%22">Witt, C.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ratzov%2C+G%2E%22">Ratzov, G.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Loayza%2C+G%2E%22">Loayza, G.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Penafiel%2C+L%2E%22">Penafiel, L.</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22Schenini%2C+L%2E%22">Schenini, L.</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22Dano%2C+A%2E%22">Dano, A.</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22Barba%2C+D%2E%22">Barba, D.</searchLink><relatesTo>8</relatesTo><br /><searchLink fieldCode="AR" term="%22Urresta%2C+A%2E%22">Urresta, A.</searchLink><relatesTo>8</relatesTo><br /><searchLink fieldCode="AR" term="%22Calderon%2C+M%2E%22">Calderon, M.</searchLink><relatesTo>9</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Marine+Geophysical+Research%22">Marine Geophysical Research</searchLink>. Mar2015, Vol. 36 Issue 1, p81-98. 18p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Subduction%22">Subduction</searchLink><br /><searchLink fieldCode="DE" term="%22Plate+tectonics%22">Plate tectonics</searchLink><br /><searchLink fieldCode="DE" term="%22Geologic+faults%22">Geologic faults</searchLink><br /><searchLink fieldCode="DE" term="%22Geophysics+research%22">Geophysics research</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Ecuador%22">Ecuador</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Selected high-resolution seismic-reflection profiles and multibeam bathymetry acquired along the convergent Ecuador margin during the ATACAMES cruise on onboard the R/V L'Atalante (Jan.15-Feb.18, 2012) allow a preliminary evaluation of the neotectonic development and stratigraphic evolution of the margin based on the sismo-stratigraphic analysis of Quaternary sediment preserved on the margin shelf and upper slope. We present three major preliminary results. (1) The evolution of the Esmeraldas, Guayaquil and Santa Elena canyons. The head of the Esmeraldas canyon is the location of a continuous significant sediment transport. The Guayaquil canyon shows several episodes of deposition and incision. Aggrading sedimentation pattern in the canyon records several changes in relative sea-level. The subsidence of the Gulf of Guayaquil probably contributes to the good preservation of the canyon filling stages. The Santa Elena canyon is controlled by a SW-NE trending normal fault. (2) Variations of sediment accumulation and relative vertical motions are shown along-strike the shelf edge. Offshore the uplifted Manta peninsula, a pronounced subsidence of the shelf edge is documented by sedimentary clinoforms that have deposited in a morphological reentrant, and have migrated upslope testifying of a local subsidence meanwhile the adjacent La Plata Island area underwent uplift. In the Esmeraldas canyon area, a local uplift of the shelf is documented. (3) Two neotectonic fault systems with a possible transcurrent component are imaged across the shelf edge and upper margin slope offshore Jama, and Cape Galera. This possible transcurrent motion could be related to the reactivation of ancient faults of the upper plate by the subduction. These preliminary results indicate that the ATACAMES data set has a strong potential to evaluate the spatial and temporal contribution of tectonic and climate changes on the structural development and stratigraphic evolution of the Ecuador continental margin. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Marine Geophysical Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=101148974
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s11001-014-9231-y
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 18
        StartPage: 81
    Subjects:
      – SubjectFull: Subduction
        Type: general
      – SubjectFull: Plate tectonics
        Type: general
      – SubjectFull: Geologic faults
        Type: general
      – SubjectFull: Geophysics research
        Type: general
      – SubjectFull: Ecuador
        Type: general
    Titles:
      – TitleFull: Quaternary sedimentation and active faulting along the Ecuadorian shelf: preliminary results of the ATACAMES Cruise (2012).
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Michaud, F.
      – PersonEntity:
          Name:
            NameFull: Collot, J.
      – PersonEntity:
          Name:
            NameFull: Martillo, C.
      – PersonEntity:
          Name:
            NameFull: Hernández, M.
      – PersonEntity:
          Name:
            NameFull: Gonzalez, M.
      – PersonEntity:
          Name:
            NameFull: Ponce, G.
      – PersonEntity:
          Name:
            NameFull: Proust, J.
      – PersonEntity:
          Name:
            NameFull: Pouderoux, H.
      – PersonEntity:
          Name:
            NameFull: Lebrun, J.
      – PersonEntity:
          Name:
            NameFull: Min, L.
      – PersonEntity:
          Name:
            NameFull: Witt, C.
      – PersonEntity:
          Name:
            NameFull: Ratzov, G.
      – PersonEntity:
          Name:
            NameFull: Loayza, G.
      – PersonEntity:
          Name:
            NameFull: Penafiel, L.
      – PersonEntity:
          Name:
            NameFull: Schenini, L.
      – PersonEntity:
          Name:
            NameFull: Dano, A.
      – PersonEntity:
          Name:
            NameFull: Barba, D.
      – PersonEntity:
          Name:
            NameFull: Urresta, A.
      – PersonEntity:
          Name:
            NameFull: Calderon, M.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 03
              Text: Mar2015
              Type: published
              Y: 2015
          Identifiers:
            – Type: issn-print
              Value: 00253235
          Numbering:
            – Type: volume
              Value: 36
            – Type: issue
              Value: 1
          Titles:
            – TitleFull: Marine Geophysical Research
              Type: main
ResultId 1