USGS - science for a changing world

Pacific Coastal & Marine Science Center

A Global Inventory of Natural Gas Hydrate Occurrence

by Keith A. Kvenvolden and Thomas D. Lorenson

home back bottom next

Descriptions of Natural Gas Hydrate - Pacific

Key: Geographic
Location:
Core/
Sample
Count:
Latitude/
Longitude:
H2O
Depth
(m):
Sed
Depth
(m):
Description:
P2 Middle America Trench (Costa Rica)
DSDP
Leg 84,
Site 565
2 samps 09°43.7’N/
86°05.4’W
3099 285 & 319 Inclusions in mud and muddy sand.
ODP
Leg 170,
Site 1041
9 samps 09°44.0’N/
86°06.9’W
3306 119 - 259 Disseminated and sheets in microfractures.
P4 Middle America Trench (Guatemala)
DSDP
Leg 67,
Site 497
1 samp 12°59.2’N/
90°49.7’W
2347 368 Inclusions in sediment.
DSDP
Leg 67,
Site 498
1 samp 12°42.7’N/
90°54.9’W
5478 307 Cement in coarse vitric sand.
DSDP
Leg 84,
Site 568
1 samp 13°04.3’N/
90°48.0’W
2010 404 Inclusion in mudstone.
DSDP
Leg 84,
Site 570
7 samps 13°17.1’N/
91°23.6’W
1698 192 - 338 Laminated ash; massive core at 249 m (1.05 m core).
P5 Middle America Trench (Mexico)
DSDP
Leg 66,
Site 490
4 samps 16°09.6’N/
99°03.4’W
1761 140 - 364 Laminated ash and mud.
DSDP
Leg 66,
Site 491
3 samps 16°01.7’N/
98°58.3’W
2883 89 - 168 Inclusions in mud.
DSDP
Leg 66,
Site 492
2 samps 16°04.7’N/
98°56.7’W
1935 141 & 170 Laminated ash.
P7 Eel River Basin
(California)
7 cores ~40°50’N/
~124°35’W
647 0 - 1.8 Layers, nodules in mud.
P8 Cascadia Basin (Oregon)
DSDP
Leg 146,
Site 892
3 cores 44°40.4’N/
125°07.1’W
647 2 - 19 Aggregates, layers in silt.
Hydrate Ridge 3 samps 44°40.1’N/
125°05.8’W
600 ~0 Layers, massive in carbonate crust.
P17 Okhotsk Sea (Russia)
Paramushir Island 2 cores 50°30.5’N/
155°18.2’E
768 1.8 Layers in ooze.
P18 Okhotsh Sea (Russia)
Sahkalin Island 5 cores 54°26.8’N/
144°04.9’E
710 1.8 Layers in silt and clay.
P20 Japan Sea (Japan)
ODP
Leg 127,
Site 796
1 samp 42°53.6’N/
139°24.7’E
2571 68 Crystals in sand with clay.
P24 Nankai Trough (Japan)
ODP
Leg 131,
Site 808
1 samp 32°21.1’N/
134°56.8’E
4684 90 - 140 Fragment in wash core.
P31 Peru-Chile Trench (Peru)
ODP
Leg 112,
Site 685
2 samps 09°06.8’S/
80°35.0’W
5070 99 - 166 Fragments in mud.
ODP
Leg 112,
Site 688
1 samp 11°32.3’S/
78°56.6’W
3820 141 Grains in mud.
 
home back top next

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://walrus.wr.usgs.gov/globalhydrate/table5p.html
Page Contact Information: PCMSC Web Team
Content Last Modified: 2001 [poster update 17Nov10 (lzt)]