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Image shows gas hydrates in marine sediments from a drill core
Gas Hydrates in Marine Sediments from the Indian Ocean
Gas Hydrates in Marine Sediments from the Indian Ocean
Gas Hydrates in Marine Sediments from the Indian Ocean

This image shows gas hydrates (the white material) in marine sediments from a test well drilled in the Indian Ocean in 2006 during the Indian National Gas Hydrate Program (NGHP) Expedition 01.

This image shows gas hydrates (the white material) in marine sediments from a test well drilled in the Indian Ocean in 2006 during the Indian National Gas Hydrate Program (NGHP) Expedition 01.

Image shows gas hydrates in marine sediments with a ruler along the side to show scale
Gas Hydrates in Marine Sediments
Gas Hydrates in Marine Sediments
Gas Hydrates in Marine Sediments

This image shows gas hydrates (the white material) in marine sediments from a test well drilled in the Indian Ocean in 2006 during the Indian National Gas Hydrate Program (NGHP) Expedition 01.

This image shows gas hydrates (the white material) in marine sediments from a test well drilled in the Indian Ocean in 2006 during the Indian National Gas Hydrate Program (NGHP) Expedition 01.

Image shows gas hydrates in marine sediments with a ruler alongside to show scale
Gas Hydrates in Marine Sediments from the Indian Ocean
Gas Hydrates in Marine Sediments from the Indian Ocean
Gas Hydrates in Marine Sediments from the Indian Ocean

This image shows gas hydrates (the white material) in marine sediments from a test well drilled in the Indian Ocean in 2006 during the Indian National Gas Hydrate Program (NGHP) Expedition 01.

This image shows gas hydrates (the white material) in marine sediments from a test well drilled in the Indian Ocean in 2006 during the Indian National Gas Hydrate Program (NGHP) Expedition 01.

Image shows gas hydrates in marine sediments with a red pen for scale
Gas Hydrates in Marine Sediments from the Indian Ocean
Gas Hydrates in Marine Sediments from the Indian Ocean
Gas Hydrates in Marine Sediments from the Indian Ocean

This image shows gas hydrates (the white material) in marine sediments from a test well drilled in the Indian Ocean in 2006 during the Indian National Gas Hydrate Program (NGHP) Expedition 01.

This image shows gas hydrates (the white material) in marine sediments from a test well drilled in the Indian Ocean in 2006 during the Indian National Gas Hydrate Program (NGHP) Expedition 01.

Image shows a rock cairn on a snowy peak with the sun on the horizon
Inukshuk at the Mallik Gas Hydrate Test Site in Canada
Inukshuk at the Mallik Gas Hydrate Test Site in Canada
Inukshuk at the Mallik Gas Hydrate Test Site in Canada

This image shows an inukshuk, a stone cairn used by indigenous peoples in northern latitudes, particularly in places like northern Canada. 

This image shows an inukshuk, a stone cairn used by indigenous peoples in northern latitudes, particularly in places like northern Canada. 

Image shows a drill rig on a snowy landscape with the sun on the horizon
Gas Hydrate Drill Rig at the Mallik Test Site in Canada
Gas Hydrate Drill Rig at the Mallik Test Site in Canada
Gas Hydrate Drill Rig at the Mallik Test Site in Canada

A drill rig at the Mallik test site in Canada's Mckenzie Delta.  USGS joined the Geological Survey of Canada, JAPEX, and the Japanese National Oil Company to drill test wells for natural gas production from gas hydrate deposits.

A drill rig at the Mallik test site in Canada's Mckenzie Delta.  USGS joined the Geological Survey of Canada, JAPEX, and the Japanese National Oil Company to drill test wells for natural gas production from gas hydrate deposits.

Image shows gas hydrate samples in blue-gloved hands
Gas Hydrates in Marine Sediments off the Oregon Coast
Gas Hydrates in Marine Sediments off the Oregon Coast
Gas Hydrates in Marine Sediments off the Oregon Coast

During Ocean Drilling Program Leg 204, nine sites were cored and wireline logged on the Oregon continental margin to determine the distribution and concentration of gas hydrates in an accretionary ridge setting, investigate the mechanisms that transport methane and other gases into the gas hydrate stability zone, and obtain constraints on physical properties of

During Ocean Drilling Program Leg 204, nine sites were cored and wireline logged on the Oregon continental margin to determine the distribution and concentration of gas hydrates in an accretionary ridge setting, investigate the mechanisms that transport methane and other gases into the gas hydrate stability zone, and obtain constraints on physical properties of

Arctic
Arctic.jpg
Arctic.jpg
Arctic.jpg

Full publication available at 

Persits, F.M. and Ulmishek, G.F., 2003, Maps showing geology, oil and gas fields, and geologic provinces of the Arctic: U.S. Geological Survey Open-File Report 97-470-J, https://doi.org/10.3133/ofr97470J

Full publication available at 

Persits, F.M. and Ulmishek, G.F., 2003, Maps showing geology, oil and gas fields, and geologic provinces of the Arctic: U.S. Geological Survey Open-File Report 97-470-J, https://doi.org/10.3133/ofr97470J

Africa thumbnail
Africa thumbnail
Africa thumbnail
Africa thumbnail

Persits, F.M., Ahlbrandt, T.S., Tuttle, M.L., Charpentier, R.R., Brownfield, M.E., and Takahashi, K.I., 1997, Maps showing geology, oil and gas fields and geological provinces of Africa: U.S. Geological Survey Open-File Report 97-470-A, https://doi.org/10.3133/ofr97470A.

Persits, F.M., Ahlbrandt, T.S., Tuttle, M.L., Charpentier, R.R., Brownfield, M.E., and Takahashi, K.I., 1997, Maps showing geology, oil and gas fields and geological provinces of Africa: U.S. Geological Survey Open-File Report 97-470-A, https://doi.org/10.3133/ofr97470A.

Bangladesh thumbnail
Bangladesh.jpg
Bangladesh.jpg
Bangladesh.jpg

Persits, F.M., Wandrey, C.J., Milici, R.C, and Manwar, A., 2001, Digital geologic and geophysical data of Bangladesh: U.S. Geological Survey Open-File Report 97-470-H, https://doi.org/10.3133/ofr97470H.

Persits, F.M., Wandrey, C.J., Milici, R.C, and Manwar, A., 2001, Digital geologic and geophysical data of Bangladesh: U.S. Geological Survey Open-File Report 97-470-H, https://doi.org/10.3133/ofr97470H.