Milkov, Alexei V; Claypool, George E; Lee, Young-Joo; Torres, Marta E; Borowski, Walter S; Tomaru, Hitoshi; Sassen, Roger; Long, Philip E; ODP Leg 204 Shipboard Scientific Party (2004): (Table 2) Molecular properties of gas from decomposed gas hydrates of ODP Leg 204 sites [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.763252, In supplement to: Milkov, AV et al. (2004): Ethane enrichment and propane depletion in subsurface gases indicate gas hydrate occurrence in marine sediments at southern Hydrate Ridge offshore Oregon. Organic Geochemistry, 35(9), 1067-1080, https://doi.org/10.1016/j.orggeochem.2004.04.003
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Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 44.584454 * Median Longitude: -125.137718 * South-bound Latitude: 44.577650 * West-bound Longitude: -125.151280 * North-bound Latitude: 44.586300 * East-bound Longitude: -125.119530
Date/Time Start: 2002-07-13T12:45:00 * Date/Time End: 2002-08-24T19:15:00
Minimum DEPTH, sediment/rock: 50.0 m * Maximum DEPTH, sediment/rock: 101.4 m
Event(s):
204-1244C * Latitude: 44.586300 * Longitude: -125.119830 * Date/Time Start: 2002-07-13T12:45:00 * Date/Time End: 2002-07-16T05:30:00 * Elevation: -895.1 m * Penetration: 333.5 m * Recovery: 315.5 m * Location: North Pacific Ocean * Campaign: Leg204 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 39 cores; 332 m cored; 1.5 m drilled; 95 % recovery
204-1244E * Latitude: 44.586180 * Longitude: -125.119530 * Date/Time Start: 2002-08-18T23:00:00 * Date/Time End: 2002-08-22T01:45:00 * Elevation: -893.3 m * Penetration: 250 m * Recovery: 137.73 m * Location: North Pacific Ocean * Campaign: Leg204 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 135.8 m cored; 114.2 m drilled; 101.4 % recovery
204-1245B * Latitude: 44.585980 * Longitude: -125.149100 * Date/Time Start: 2002-08-06T07:15:00 * Date/Time End: 2002-08-09T15:45:00 * Elevation: -869.7 m * Penetration: 473.7 m * Recovery: 418.02 m * Location: North Pacific Ocean * Campaign: Leg204 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 53 cores; 471.7 m cored; 2 m drilled; 88.6 % recovery
Comment:
Sediment depth is given in mbsf. 0 ist 0 or below detection limit.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Milkov, Alexei V | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 4 | Methane | CH4 | ppmv | Milkov, Alexei V | ||
| 5 | Ethane | C2H6 | ppmv | Milkov, Alexei V | measured composition | |
| 6 | Propane | C3H8 | ppmv | Milkov, Alexei V | measured composition | |
| 7 | Methane | CH4 | ppmv | Milkov, Alexei V | measured composition | |
| 8 | Ethane | C2H6 | ppmv | Milkov, Alexei V | ppm of hydrocarbon gases | |
| 9 | Propane | C3H8 | ppmv | Milkov, Alexei V | ppm of hydrocarbon gases | |
| 10 | Methane/ethane ratio | C1/C2 | Milkov, Alexei V | ppm of hydrocarbon gases |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
71 data points
Data
| 1 Event | 2 Sample label | 3 Depth sed [m] | 4 CH4 [ppmv] | 5 C2H6 [ppmv] (measured composition) | 6 C3H8 [ppmv] (measured composition) | 7 CH4 [ppmv] (measured composition) | 8 C2H6 [ppmv] (ppm of hydrocarbon gases) | 9 C3H8 [ppmv] (ppm of hydrocarbon gases) | 10 C1/C2 (ppm of hydrocarbon gases) |
|---|---|---|---|---|---|---|---|---|---|
| 204-1244C | 204-1244C-8H-1,47-52 | 65.0 | 400346 | 15.6 | 0 | 999961 | 39.0 | 0 | 25600 |
| 204-1244C | 204-1244C-10H-2,70-103 | 85.0 | 21695 | 0.5 | 0 | 999977 | 23.0 | 0 | 40900 |
| 204-1244E | 204-1244E-7H-6,124-141 | 50.0 | 343207 | 6.6 | 0 | 999981 | 19.3 | 0 | 51900 |
| 204-1244E | 204-1244E-12H-1,60 | 74.0 | 839671 | 17.0 | 0 | 999980 | 19.8 | 0 | 50600 |
| 204-1245B | 204-1245B-6H-5,103 | 54.5 | 811962 | 13.4 | 0 | 999983 | 16.5 | 0 | 60700 |
| 204-1245B | 204-1245B-9H-CC | 85.0 | 939965 | 20.7 | 0 | 999978 | 22.0 | 0 | 45400 |
| 204-1245C | 204-1245C-7H-5,40 | 53.4 | 226987 | 0.0 | 0 | 1000000 | 0.0 | 0 | |
| 204-1245C | 204-1245C-13H-4,56-76 | 101.4 | 945471 | 19.9 | 0 | 999979 | 21.1 | 0 | 47500 |
| 204-1247B | 204-1247B-12H-2,41-51 | 93.0 | 952222 | 39.4 | 0 | 999959 | 41.4 | 0 | 24100 |