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 105 645 C 003 Hydraulic (Advanced) Piston Core 02 120 120 HS Headspace techniques were used 5.0 GC1-50 0000006 0000002 0000003.00 70.45717 -64.65433 0015.50 1670 1670