HW gave me grids of French multibeam bathymetry that they recorded last week and I loaded it into the Kingdom Suite software where we could look at it in 3D, together with grids of SRTM (space shuttle, I think) topography data and the Western Geophysical seismic reflection profiles. There are a couple of closed sedimentary basins where the sediments have ponded making for very flat seafloor. One of these is perched above a linear ridge that looks very suspiciously like it would be related to a shallow fault. These flat sediments should be able to be well-imaged down to hopefully some tens of meters sub-bottom depth by the chirp seismic reflection system we have. If we image a fault that cuts and offsets the sediment layers we could take gravity cores on either side and later have them radiocarbon dated.

Last evening I showed the Haitian geologist/Engineer Nicole some of the seismic reflection and discussed the giant anticline that includes the Gonave Island. I’ll ask her if she wants to look at some California blind thrusts and anticlines for comparison.

I need to compare the southern ends of two Western Geophysical seismic reflection profiles to the bathymetry and shift their navigation to the correct places. These two profiles lack navigation for their southern ends (it was just missing). I simply extrapolated the southern ends but need to do better than that. Then, I will try and “migrate” these profiles to put the reflections in the correct positions and to collapse diffractions. Then maybe we can see if there are blind thrust faults on these profiles also.

Chris