Table 9. Composition of headspace gases at Site 1042.						

"Notes: C1, C2, and C3 represent methane, ethane, and propane, respectively. ppmv = parts per million by volume."						

"Core, section"	Depth	C1	C2	C3	C1/C2	
interval (cm)	(mbsf)	(ppmv)	(ppmv)	(ppmv)		
						
170-1042A						
"1R-1, 0-5"	48.73	7214	8	1	902	
"2R-2, 0-5"	97.63	15317	15	5	1021	
"3R-1, 0-5"	153.73	356147	444	52	802	
"4R-2, 0-5"	203.23	257460	368	106	700	
"5R-2, 0-5"	212.83	128238	219	70	586	
"6R-2, 0-5"	222.43	79666	138	42	577	
"7R-2, 0-5"	232.04	38615	62	14	623	
170-1042B						
"8R-1, 0-5"	381.23	3238	10	7	324