|
|
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. |
|
U.S. Department of the Interior | U.S. Geological Survey
