作者: Keith A. Kvenvolden , Thomas D. Lorenson
DOI: 10.1029/GM124P0003
关键词: Hydrate 、 Geology 、 Oceanography 、 Seafloor spreading 、 Methane 、 Natural gas 、 Geochemistry 、 Continental shelf 、 Sediment 、 Clathrate hydrate 、 Bottom water
摘要: Natural gas hydrate occurs worldwide in oceanic sediment of continental and insular slopes and rises of active and passive margins, in deep-water sediment of inland lakes and seas, and in polar sediment on both continents and continental shelves. In aquatic sediment, where water depths exceed about 300 m and bottom water temperatures approach 0 C, gas hydrate is found at the seafloor to sediment depths of about 1,100 m. In polar continental regions, gas hydrate can be present in sediment at depths between about 150 and 2000 m …