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A combination of δ 13 C and δ 18 O analyses with U–Th disequilibrium dating on a stalagmite and groundwater from the deep and extensive Arch Cave network on northeastern Vancouver Island has produced a preliminary 12,200y paleoclimatic profile. Speleothem depositional rates vary from 6 to 41mm/ka and are consistent with the “Hendy” test for speleothem deposition under high-humidity...
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