leg site hole core coretype section top interval bottom interval sample code head or vacutainer volume parameter id las name oxygen nitrogen methane carbon monoxide carbon dioxide ethylene ethane hydrogen sulfied propylene propane isobutate normal butane isopentane normal pentane isohexane normal hexane methane/ethane methane/ethane plus comments latitude longitude depth top interval depth below sea floor bottom interval depth below sea floor 104 642 A 001 Hydraulic (Advanced) Piston Core 03 135 140 HS Headspace techniques were used 5.0 GC1-50 0000011 67.22500 2.92833 0004.30 565 570