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Open-File Report 96-272, Offshore Gas Hydrate Sample Database with an Overview and Preliminary Analysis
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3. Profile of Gas Hydrate Sample Data

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         3.1   Geographic Locations
         3.2    Water Depth and Subseabed Depth
         3.3    Physiographic Provinces and Tectonic Settings
         3.4    Habit or Mode of Occurrence
         3.5    Associated Sediment Textures
         3.6    Thickness of Hydrate Zones and Dimensions of Pure Hydrates
         3.7    Origin: Biogenic vs. Thermogenic
Figure 3. Distribution of recovered gas hydrate samples with respect to total depth.
Figure 3. Distribution of recovered gas hydrate samples with respect to total depth. Click for larger view.

3.2  Water Depth and Subseabed Depth

Gas hydrate samples have been recovered from a range of water and subbottom depths. Figure 3 shows the considerable spread with respect to both categories, as well as total depth. Water depths from 500 m to nearly 6,000 m and subbottom depths to 400 m have yielded samples.









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