Volcanogenic CO₂ Degassing in the Songliao Continental Rift System, NE China

Table 2

Estimated carbon sources for the spring gas samples in WMVF.

Sample no.	Reference	δ^13C (‰)	CO2/^3He (×10^9)	Carbon inventory
				DMM	ORS	CAR	M+C
HLQ17	This study	−5.0	29.5	0.05	0.25	0.70	0.75
NYQ17	This study	−7.2	1.9	0.79	0.11	0.10	0.89
BYQ18	This study	−6.0	12.1	0.12	0.28	0.60	0.72
HL2	[21]	−5.3	18.8	0.08	0.26	0.66	0.74
FH2	[21]	−8.2	5.1	0.29	0.34	0.37	0.66
BY1	[21]	−6.5	28.5	0.05	0.33	0.61	0.66
NYQ	[18]	−5.1	27.0	0.06	0.26	0.69	0.76
WBQ	[18]	−5.8	97.6	0.02	0.30	0.68	0.70
DZT	[18]	−7.4	2.3	0.65	0.17	0.18	0.83
SG2	[20]	−6.6	1.7	0.88	0.05	0.07	0.95
			Average	0.30	0.24	0.46	0.76