Table 2.

Table 2. Molecular composition of hydrocarbons and the carbon and hydrogen isotope composition of methane in gas hydrate recovered on Leg 164, Blake Ridge.

Container No. Hole, core, section Depth (mbsf)
Hydrocarbon composition (relative vol%)

C₁ C₂ C₃ i-C₄ n-C₄ i-C₅ n-C₅ C₆₊

#1A
994C-31X-6
259

99.924
0.013
0.005
0.016
0.027
0.013
0.003
0.000

5,680
-69.7
ND

#2A
994C-31X-6
259

99.977
0.005
0.002
0.005
0.006
0.005
0.001
0.000

14,526
-67.4
-205

#14
997A-42X-3
330

99.981
0.019
0.000
0.000
0.000
0.000
0.000
0.000

5,163
-66.2
-201

#16A
997A-42X-3
330

99.956
0.014
0.006
0.009
0.008
0.007
0.000
0.000

5,082
-66.1
ND

#16B
997A-42X-3
330

99.978
0.007
0.004
0.004
0.004
0.001
0.001
0.000

9,121
-66.5
-206

#16C
997A-42X-3
330

99.993
0.007
0.000
0.000
0.000
0.000
0.000
0.000

15,088
-65.9
ND

Container No.	Hole, core, section	Depth (mbsf)		Hydrocarbon composition (relative vol%)
C₁	C₂	C₃	i-C₄	n-C₄	i-C₅	n-C₅	C₆₊
#1A	994C-31X-6	259		99.924	0.013	0.005	0.016	0.027	0.013	0.003	0.000	5,680	-69.7	ND
#2A	994C-31X-6	259		99.977	0.005	0.002	0.005	0.006	0.005	0.001	0.000	14,526	-67.4	-205
#14	997A-42X-3	330		99.981	0.019	0.000	0.000	0.000	0.000	0.000	0.000	5,163	-66.2	-201
#16A	997A-42X-3	330		99.956	0.014	0.006	0.009	0.008	0.007	0.000	0.000	5,082	-66.1	ND
#16B	997A-42X-3	330		99.978	0.007	0.004	0.004	0.004	0.001	0.001	0.000	9,121	-66.5	-206
#16C	997A-42X-3	330		99.993	0.007	0.000	0.000	0.000	0.000	0.000	0.000	15,088	-65.9	ND

Note: ND = not determined.