Geo-Marine Letters

, Volume 12, Issue 4, pp 208–213 | Cite as

Fe−Mn nodule field indicated by GLORIA, north of the Puerto Rico Trench

  • Kathryn M. Scanlon
  • Douglas G. Masson
Article

Abstract

A 2,500-km2 area of sea floor on the south-eastern flank of the Greater Antilles Outer Ridge north of the Puerto Rico Trench displays anomalously high acoustic backscattering properties on GLORIA longrange sidescan-sonar data. Previously collected dredges, bottom photographs, and sediment cores indicate the presence of Fe−Mn nodules within the area of high backscatter. We were able to map the extent of the inferred nodule field on the basis of acoustic property contrast between the nodule-covered sediment and the surrounding nodule-free sediment.

Keywords

Nodule Trench Longrange Sediment Core Acoustic Property 

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Copyright information

© Springer-Verlag New York Inc. 1992

Authors and Affiliations

  • Kathryn M. Scanlon
    • 1
  • Douglas G. Masson
    • 2
  1. 1.US Geological SurveyWoods HoleUSA
  2. 2.Institute of Oceanographic SciencesWormleyUK

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