/* DATA DESCRIPTION: Citation: Klapp, Stephan A; Hemes, H; Klein, Helmut; Bohrmann, Gerhard; MacDonald, Ian R; Kuhs, Werner F (2010): (Table 1) Mean grain sizes and standard deviations of gas hydrate samples. PANGAEA, https://doi.org/10.1594/PANGAEA.771917, Supplement to: Klapp, SA et al. (2010): Grain size measurements of natural gas hydrates. Marine Geology, 274(1-4), 85-94, https://doi.org/10.1016/j.margeo.2010.03.007 Abstract: Methane hydrates are present in marine seep systems and occur within the gas hydrate stability zone. Very little is known about their crystallite sizes and size distributions because they are notoriously difficult to measure. Crystal size distributions are usually considered as one of the key petrophysical parameters because they influence mechanical properties and possible compositional changes, which may occur with changing environmental conditions. Variations in grain size are relevant for gas substitution in natural hydrates by replacing CH4 with CO2 for the purpose of carbon dioxide sequestration. Here we show that crystallite sizes of gas hydrates from some locations in the Indian Ocean, Gulf of Mexico and Black Sea are in the range of 200–400 µm; larger values were obtained for deeper-buried samples from ODP Leg 204. The crystallite sizes show generally a log-normal distribution and appear to vary sometimes rapidly with location. Project(s): Center for Marine Environmental Sciences (MARUM) (URI: https://www.marum.de/en/) Ocean Drilling Program (ODP) (URI: http://www-odp.tamu.edu/) Coverage: MEDIAN LATITUDE: 38.573876 * MEDIAN LONGITUDE: -18.765703 * SOUTH-BOUND LATITUDE: 15.864300 * WEST-BOUND LONGITUDE: -125.152500 * NORTH-BOUND LATITUDE: 44.577650 * EAST-BOUND LONGITUDE: 81.834700 DATE/TIME START: 2002-07-25T13:30:00 * DATE/TIME END: 2007-04-11T10:14:00 MINIMUM DEPTH, sediment/rock: 0.850 m * MAXIMUM DEPTH, sediment/rock: 132.410 m Event(s): 204-1247B * LATITUDE: 44.577650 * LONGITUDE: -125.151280 * DATE/TIME START: 2002-08-22T06:45:00 * DATE/TIME END: 2002-08-24T19:15:00 * ELEVATION: -834.3 m * Penetration: 220 m * Recovery: 211.98 m * LOCATION: North Pacific Ocean * CAMPAIGN: Leg204 (URI: https://doi.org/10.2973/odp.proc.ir.204.2003) * BASIS: Joides Resolution (URI: http://www-odp.tamu.edu/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 27 cores; 217 m cored; 3 m drilled; 97.7 % recovery 204-1248C * LATITUDE: 44.574230 * LONGITUDE: -125.152500 * DATE/TIME START: 2002-08-01T13:45:00 * DATE/TIME END: 2002-08-02T12:30:00 * ELEVATION: -829.6 m * Penetration: 149 m * Recovery: 101.44 m * LOCATION: North Pacific Ocean * CAMPAIGN: Leg204 (URI: https://doi.org/10.2973/odp.proc.ir.204.2003) * BASIS: Joides Resolution (URI: http://www-odp.tamu.edu/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 17 cores; 149 m cored; 0 m drilled; 68.1 % recovery 204-1249C * LATITUDE: 44.570610 * LONGITUDE: -125.147350 * DATE/TIME START: 2002-07-25T13:30:00 * DATE/TIME END: 2002-07-26T11:45:00 * ELEVATION: -778.4 m * Penetration: 90 m * Recovery: 58.97 m * LOCATION: North Pacific Ocean * CAMPAIGN: Leg204 (URI: https://doi.org/10.2973/odp.proc.ir.204.2003) * BASIS: Joides Resolution (URI: http://www-odp.tamu.edu/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 14 cores; 88.5 m cored; 1.5 m drilled; 66.6 % recovery 204-1250C * LATITUDE: 44.568780 * LONGITUDE: -125.150300 * DATE/TIME START: 2002-08-02T12:30:00 * DATE/TIME END: 2002-08-03T17:00:00 * ELEVATION: -795.8 m * Penetration: 145 m * Recovery: 117.29 m * LOCATION: North Pacific Ocean * CAMPAIGN: Leg204 (URI: https://doi.org/10.2973/odp.proc.ir.204.2003) * BASIS: Joides Resolution (URI: http://www-odp.tamu.edu/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 19 cores; 143 m cored; 2 m drilled; 82 % recovery GeoB9913-6 (BS360G) * LATITUDE START: 41.983333 * LONGITUDE START: 41.123500 * LATITUDE END: 41.983333 * LONGITUDE END: 41.123500 * DATE/TIME START: 2005-06-18T00:00:00 * DATE/TIME END: 2005-06-18T18:29:00 * ELEVATION START: -988.0 m * ELEVATION END: -988.0 m * Recovery: 2.55 m * LOCATION: Pechori Mound * CAMPAIGN: TTR-15 * BASIS: Professor Logachev (URI: http://www.pmge.ru/modules.php?name=Contenteng&pa=showpage&pid=12) * METHOD/DEVICE: Gravity corer (GC) GeoB9931-1 (BS380GR) * LATITUDE START: 41.973000 * LONGITUDE START: 41.102330 * LATITUDE END: 41.968000 * LONGITUDE END: 41.102830 * DATE/TIME START: 2005-06-26T13:34:00 * DATE/TIME END: 2005-06-26T01:18:00 * ELEVATION START: -1142.0 m * ELEVATION END: -1142.0 m * LOCATION: Colkheti Seep * CAMPAIGN: TTR-15 * BASIS: Professor Logachev (URI: http://www.pmge.ru/modules.php?name=Contenteng&pa=showpage&pid=12) * METHOD/DEVICE: Television-Grab (TVG) GeoB9935-2 (BS383G) * LATITUDE START: 41.474333 * LONGITUDE START: 37.597167 * LATITUDE END: 41.474333 * LONGITUDE END: 37.597167 * DATE/TIME START: 2005-06-28T00:00:00 * DATE/TIME END: 2005-06-28T22:31:00 * ELEVATION START: -1431.0 m * ELEVATION END: -1431.0 m * Recovery: 4.75 m * CAMPAIGN: TTR-15 * BASIS: Professor Logachev (URI: http://www.pmge.ru/modules.php?name=Contenteng&pa=showpage&pid=12) * METHOD/DEVICE: Gravity corer (GC) GeoB10618 * LATITUDE: 21.899160 * LONGITUDE: -93.436830 * DATE/TIME: 2006-04-11T21:08:00 * ELEVATION: -2903.0 m * LOCATION: Chapopote * CAMPAIGN: M67/2b (URI: https://doi.org/10.2312/cr_m67) * BASIS: Meteor (1986) (URI: https://en.wikipedia.org/wiki/RV_Meteor_(1986)) * METHOD/DEVICE: Gravity corer (GC) GeoB11927 (GC-6) * LATITUDE: 41.956833 * LONGITUDE: 41.288733 * DATE/TIME: 2007-04-01T13:56:00 * ELEVATION: -856.0 m * LOCATION: Batumi Seep * CAMPAIGN: M72/3a (URI: https://doi.org/10.2312/cr_m72) * BASIS: Meteor (1986) (URI: https://en.wikipedia.org/wiki/RV_Meteor_(1986)) * METHOD/DEVICE: Gravity corer (GC) * COMMENT: USBL, 6 m, plastic bag GeoB11956 (GC-18) * LATITUDE: 41.957500 * LONGITUDE: 41.290600 * DATE/TIME: 2007-04-11T10:14:00 * ELEVATION: -843.0 m * Recovery: 1.1 m * LOCATION: Batumi Seep * CAMPAIGN: M72/3b (URI: https://doi.org/10.2312/cr_m72) * BASIS: Meteor (1986) (URI: https://en.wikipedia.org/wiki/RV_Meteor_(1986)) * METHOD/DEVICE: Gravity corer (GC) * COMMENT: USBL, PVC-liner Segments for CT analysis (3 m) NGHP/01_10D * LATITUDE: 15.864300 * LONGITUDE: 81.834700 * ELEVATION: -1038.0 m * LOCATION: Indian Ocean * METHOD/DEVICE: Geological sample (GEOS) * COMMENT: Indian gas hydrat drilling campaign NGHP expedition 01 in 2006. SO174/2_157-2 (157-2) * LATITUDE: 27.782750 * LONGITUDE: -91.507810 * DATE/TIME: 2003-11-06T17:24:00 * ELEVATION: -547.0 m * LOCATION: Bush Hill * CAMPAIGN: SO174/2 (OTEGA II) (URI: https://doi.org/10.3289/geomar_rep_117_2003) * BASIS: Sonne (URI: https://en.wikipedia.org/wiki/RV_Sonne) * METHOD/DEVICE: Television-Grab (TVG) * COMMENT: lots of GH Comment: Site conditions (water depth, burial depth meters below sea floor [mbsf] and temperature) are given for marine samples to provide information about the stability conditions for the hydrates #Klapp et al. (2007), see also: http://doi.pangaea.de/10.1594/PANGAEA.771920 *Tréhu et al. (2006). Parameter(s): Event label (Event) Sample code/label (Sample label) * PI: Klapp, Stephan A Grain size, mean [µm] (Grain size mean) * PI: Klapp, Stephan A * METHOD/DEVICE: see reference(s) Standard deviation [±] (Std dev) * PI: Klapp, Stephan A Number (No) * PI: Klapp, Stephan A Temperature, technical [°C] (T tech) * PI: Klapp, Stephan A Elevation of event [m] (Elevation) DEPTH, sediment/rock [m] (Depth sed) * GEOCODE Depth, top/min [m] (Depth top) * PI: Klapp, Stephan A Depth, bottom/max [m] (Depth bot) * PI: Klapp, Stephan A Depth comment (Depth comm) * PI: Klapp, Stephan A Latitude of event (Latitude) Longitude of event (Longitude) License: Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/) Size: 116 data points */ Event Sample label Grain size mean [µm] Std dev [±] No T tech [°C] Elevation [m] Depth sed [m] Depth top [m] Depth bot [m] Depth comm Latitude Longitude GeoB9931-1 Colkheti Seep, BS380GR 223 101 286 9.1 -1142 1.000 <1.00 41.973000 41.102330 GeoB9931-1 Colkheti Seep, BS380GR, manually 214 130 299 9.1 -1142 1.000 <1.00 41.973000 41.102330 GeoB9913-6 Pechori Mound, BS360G 213 89 217 9.1 -988 1.325 0.70 1.95 41.983333 41.123500 GeoB9913-6 Pechori Mound, BS360G, manually 210 91 63 9.1 -988 1.325 0.70 1.95 41.983333 41.123500 GeoB9935-2 Samsun Seep, BS383G 236 106 69 9.1 -1431 4.700 4.65 4.75 41.474333 37.597167 GeoB11927 Batumi Seep, GeoB11927-7 400 146 613 9.0 -856 2.400 1.50 3.30 41.956833 41.288733 GeoB11956 Batumi Seep, GeoB11956 410 95 119 9.0 -843 0.850 0.80 0.90 41.957500 41.290600 NGHP/01_10D Site 10D, Core 20X, Section 6, 52-59 cm 217 99 189 11.5 -1038 132.410 15.864300 81.834700 SO174/2_157-2 Bush Hill (TVG-10GH4) 204 89 377 8.7 -547 1.000 <1.00 27.782750 -91.507810 SO174/2_157-2 Bush Hill (TVG-10GH1) #301 #114 261 8.7 -547 1.000 <1.00 27.782750 -91.507810 GeoB10618 Chapopote (GeoB10618, CT2) 227 99 672 4.4 -2903 1.000 <1.00 21.899160 -93.436830 GeoB10618 Chapopote (GeoB10618, CT2), manually 207 97 509 4.4 -2903 1.000 <1.00 21.899160 -93.436830 GeoB10618 Chapopote (GeoB10618, CT6) 187 109 743 4.4 -2903 1.000 <1.00 21.899160 -93.436830 204-1249C 1249C-1H-CC,0-10 cm #373 #134 317 *4.3 -778 1.500 44.570610 -125.147350 204-1250C 1250C-2H-CC,0-1 cm #451 #132 124 *4.4 -796 5.060 44.568780 -125.150300 204-1247B 1247B-12H-2, 41-51 cm #592 #374 40 *8.5 -834 93.010 44.577650 -125.151280 204-1248C 1248C-11H-5 (notilt) #517 #176 231 *9.9 -830 100.890 44.574230 -125.152500 204-1248C 1248C-11H-5 (90° tilted) #569 #342 49 *9.9 -830 100.890 44.574230 -125.152500 204-1248C 1248C-8H-6, 68-87 cm #361 #79 99 *8.8 -830 74.460 44.574230 -125.152500 Synthetic CH4-Hydrate #43 #24 1793