Table T6. Presence of gas hydrate based on infrared images of cores in liner, Site 1252.
Core, section
T (°C)
Gas hydrate texture*
Depth interval (mbsf)
Anomaly designation
Hydrate sample
Top
(cm)
Bottom (cm)
Depth (mbsf)
Top Bottom
204-1252A-
3H -0.6 Disseminated; questionable 18.50 19.00 IR540


3H -0.9 Disseminated; questionable 21.40 22.50 IR541


6H -0.7 Disseminated; vein 43.00 43.09 IR542


6H -0.5 Disseminated 47.40 47.61 IR543


6H -0.5 Nodular; disseminated 48.42 48.50 IR544


7H -0.8 Disseminated 53.70 55.35 IR545


7H -0.9 Disseminated 55.70 56.80 IR546


8H -0.6 Disseminated 64.20 64.50 IR547


8H -1.7 Disseminated; around central vein 66.50 67.32 IR548


8H -1.7 Nodular; disseminated 70.64 70.71 IR549


10H -0.6 Disseminated 81.00 81.11 IR550


10H-2 -2.7 Nodular; vein 83.06 83.25 IR551 35 45 82.75
10H -0.3 Disseminated 87.47 87.56 IR552


11H -0.6 Disseminated 97.10 96.83 IR553


11H-6 -3.2 Vein; parallel to bedding 98.45 98.50 IR554 70 80 98.60
12H -0.5 Disseminated 100.08 100.12 IR555


12H -0.6 Disseminated 102.90 102.94 IR556


12H -0.9 Disseminated; vein 103.43 103.64 IR557


12H -0.4 Disseminated 103.89 103.90 IR558


12H -0.8 Vein; disseminated; split by gas 106.80 106.86 IR559


12H -0.8 Nodular 107.39 107.42 IR560


12H -1.8 Vein; disseminated 109.48 109.65 IR561


13H -0.9 Vein; slight dip; disseminated 111.50 111.85 IR562


13H -0.6 Disseminated; variable T 117.50 118.40 IR563


14H -0.5 Disseminated; questionable 118.90 119.10 IR564


14H -0.4 Disseminated; periodic spacing 119.40 119.75 IR565


14H -0.2 Disseminated 120.60 120.67 IR566


14H -0.3 Disseminated; periodic spacing 121.20 121.25 IR567


14H -0.5 Disseminated; cracking 125.25 125.70 IR568


15X -0.7 Disseminated 128.55 128.62 IR569


15X -0.4 Disseminated 131.05 131.14 IR570


15X -0.3 Disseminated 132.88 132.94 IR571


21X -0.9 Vein; disseminated; cold core top? 183.15 183.22 IR572


Notes: * = from anomaly characteristics and core description, if available. † = from uncut core liner. ‡ = used for reference to specific anomalies in text and figures. The difference between these depth intervals and the equivalent curated section depth intervals is typically <1 m.