Figure F7. A. Section of low-frequency MCS Line 89-08 over first slope basin near Site U1325. A clear BSR is seen between common depth points (CDPs) 1280 and 1420, around the ridge of accreted sediments. Site U1325 is located away from the core of the ridge, where a bright spot with apparent opposite reflection polarity may indicate the presence of free gas within the gas hydrate stability field. B. Section of the coincident higher frequency MCS Line ODP-7 showing a much reduced BSR reflection. V.E. = vertical exaggeration.
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