Table 3.

Stable carbon isotope analysis.

Location	Site	Analyzed sample	δ13Ctot(‰)	δ13Corg(‰)	δ13CCH4Begina,b	δ13CCH4End	δ13CCO2Begina,b	δ13CCO2End	fH2Begina,b	fH2End
Nubra Valley	Glacier 1	N1/3A Crust	−10.3	−23.6	−71	−38.7	−18.4	−20.7	0.7–1.0	0.1–0.2
	Glacier 2	N2/4A Crust	−20.5	−25.2	−66.4	−50.4	−24.1	−24.1	0.6–0.9	0.3–0.5
	Glacier 3	N3/1C Crust	−10.5	−23.1	−58.2	−53.8	−21.7	−20.4	0.4–0.7	0.4–0.6
Tsomoriri	Chamser	TS 3B-bottom/crust	−22.2	−22.4	−64.1	−39.8	−14.6	−19.1	0.5–0.8	0.1–0.2
Plains	Glacier	TS 3B-top/bare soil	−20.9	−21.2	BLDc	BLD	BLD	BLD	BLD	BLD
	Arid	Crust 1	−14.0	−19.7	−52.7	−47.4	−11.9	−14.6	0.4–0.5	0.3–0.4
		Bare soil 1	−13.6	−24.0	−61	−64.2	−24.1	−22	0.5–0.8	0.6–0.8
	Steppe	Crust 2	−17.5	−20.4	−69.7	−70	−16.5	−19.7	0.6–1.0	0.6–1.0
		Bare soil2	−22.3	−23.9	−69.6	−52.4	−23.6	−22.8	0.6–1.0	0.3–0.5
	Subnival	Crust 3	−21.6	−21.3	−69.8	−43.5	−4.4	−12.4	0.6–1.0	0.2–0.3
		Bare soil 3	−22.3	−22.1	−62.6	−41.4	−27.0	−22.4	0.5–0.8	ca. 0.2

^aMeans of the 3 technical replicates.

^b“Begin” and “end” refer to the first and last measurements.

^cBLD, below the limit of detection.