Technical Note 20/4



Figure 172-6. Reconstruction of glacial 13C for the western Atlantic (Lohmann et al., unpublished) showing location of proposed depth transect of cores in BBOR region. Together with nearby data from 500 to 1500 m at Little Bahama Bank (Slowey, 1990), we will have nearly complete coverage of intermediate and deep water mass distribution in the North Atlantic. Combined with transects to the south at Ceara (5°N) and Rio Grande Rises (30°S), it will be possible to monitor latitudinal changes in benthic fronts through time. Using piston cores in reconstructions such as this establishes important baseline conditions for ODP hydrographic reconstructions on longer time scales with fewer sites.

To Figure 172-7

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