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Figure 8. Sea-bottom dropcore grid within Viosca Knoll, designed to evaluate the utility of seeps for defining the limit of field extent as indicated by seismic-amplitude anomalies (shaded area). Although the MFI values over the amplitude anomaly appear to be somewhat higher than for dropcores near the right and upper limits of the grid, these data do not provide the capability to closely constrain the limits of the anomaly. Some of the largest MFI values are from dropcores collected near the intersection of the cross-stratal migration pathway with the seafloor.