SCIENTIFIC OBJECTIVES
The primary goals of Leg 174A were to (1) date as precisely as possible sequence boundaries of
Oligocene to Pleistocene age, and compare this stratigraphic record with the timing of glacial
eustatic changes inferred from deep-sea delta18O variations; (2) place constraints
on the amplitudes and rates of sea-level change that may have been responsible for
unconformity development; (3) assess the relationships between depositional facies and
sequence architecture; and (4) provide a baseline for future scientific ocean drilling that would
address the effects and timing of sea-level changes on this and other passive continental
margins. An additional goal for Leg 174A was technical. The leg represented the first attempt
by scientific ocean drilling in almost 30 yr to sample a thickly sedimented, continental margin in
water less than 150 m deep. Two sites (Sites 1071 and 1072) are located on the outer part of the
continental shelf in water depths of 88-90 and 98 mbsl, respectively. An additional site (Site
1073) is located on the uppermost continental slope, part of the Hudson Apron, in a water depth
of 638 mbsl.
To 174A Results - Site 1071
To 174A Table of Contents
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