Using SeaBeam bathymetry and multichannel seismic reflection records we have identified three large submarine landslides on the southern Oregon Cascadia margin. The area enclosed by the three arcuate slide scarps is approximately 8000 km, and involves an estimated 12,000–16,000 km of the accretionary wedge. The three arcuate slump escarpments are nearly coincident with the continental shelf edg...

The end of the Eocene greenhouse world was most dramatic phase in long-term Cenozoic cooling trend. Here we use 75,000 km multi/single channel seismic reflection data from offshore Prydz Bay, Antarctica, to provide new insight on Paleogene stratigraphic transition icehouse conditions and reorganizing ocean circulation changes that were invigorated by glaciation. We identify a prominent transiti...

Specimens of Recent foraminifera of Amphistegina radiata, Peneroplis planatus and Globigerinoides ruber, from fifty samples of surface sediments of the continental margin of the State of Ceará, Brazil, have been analyzed for carbon and oxygen isotopes to investigate oceanographic parameters and determine the values of delta18O of the oceanic water. From a comparison between values of delta18O o...

The Chilean margin provides a «natural laboratory» for the analysis of interactions between climate, geol¬ ogy, oceanography. and Sedimentation processes due to its extraordinary latitudinal gradients in environ¬ mental and geological settings such as topography, climate, tectonics, volcanic activity, oceanography, and onshore geology. North to south changes in topogra¬ phy are obvious from the...