The objectives of Leg 164 include 1) assessing the amounts of gas trapped in extensively hydrated sediments,
2) contributing to an understanding of the lateral variability in the extent of gas hydrate development,
3) refining the understanding of the relationship between bottom-simulating reflectors and gas hydrate development,
4) investigating the distribution and in situ fabric of gas hydrates within sediments,
5) establishing the changes in the physical properties (porosity, permeability, velocity, thermal conductivity, etc.)
associated with gas hydrate formation and decomposition in continental margin sediments, 6) determining
whether the gas captured in gas hydrates is produced locally or has migrated from elsewhere,
7) investigating the role of gas hydrates in the formation of authigenic carbonate nodules,
8) refining our understanding of chemical and isotopic composition of gas hydrates, 9) determining
the gas composition, hydration number, and crystal structure of natural gas hydrates, 10) determining
the role of gas hydrates in stimulating or modifying fluid circulation, 11) investigating the potential
connection between major slumps and the breakdown of gas hydrate, and 12) establishing the influence of
the Carolina Rise diapirs on the gas hydrates as well as the origin of the diapirs themselves.
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