Figure 6. Temperature profiles below the sill depth (marked by the shallow horizontal line) in the California Borderlands Basins, after Emery (1960). Superimposed are Leg 167 drill sites, each located at its bathymetric depth and by the bottom-water temperature measured for sediment heat flow (Lyle, Koizumi, Richter, et al., 1997). Sill depths based upon matching bottom-water temperatures to the ocean temperature profile match the sill depths of the basins.

Figure 6. Temperature profiles below the sill depth (marked by the shallow horizontal line) in the California Borderlands Basins, after Emery (1960). Superimposed are Leg 167 drill sites, each located at its bathymetric depth and by the bottom-water temperature measured for sediment heat flow (Lyle, Koizumi, Richter, et al., 1997). Sill depths based upon matching bottom-water temperatures to the ocean temperature profile match the sill depths of the basins.