D.G. Masson Kathryn M. Scanlon 1992 <p>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. ?? 1992 Springer-Verlag New York Inc.</p> application/pdf 10.1007/BF02091840 en Springer Fe-Mn nodule field indicated by GLORIA, north of the Puerto Rico Trench article