... was chosen as the test area for the geochemical exploration of gas hydrate in the middle- latitude region. Soil headspace gas, acid-extracted hydrocarbon, carbon isotope of methane were tested. Results reveal that geochemical anomalies were consistent with the underlying gas hydrate reservoir. The carbon...

... Slope area of Alaska, US (Collett, 1993) and the Mackenzie delta, Canada (Dallimore et al., 1999). gas hydrate composition basin characteristic raman spectrometry geology siltstone qilian mountain permafrost upstream oil & gas anomaly sandstone qinghai-tibet plateau hydrate...

... mapping, a survey of the geographical distribution and regional abundances of the polymetallic nodules as well as the determination of their chemical composition, and a magnetic anomaly profiling along the cruise track from Honolulu (158°W) southeast to 116°W. About half of each of the two parts...

... a new page in geophysical science. The first breakthrough became a discov- ery in1993-1994, in the region of 14 - 45 N, of an NP anomaly, which led to the finding of an ore field Logatchev [2, 3]. It should be mentioned that the following numerous attempts of using electrical survey in NP...