2024
DOI: 10.1017/s0954102024000075
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Palaeo-environmental significance of evaporative calcite crusts in the Untersee Oasis, East Antarctica

Denis Lacelle,
Michelle Christy,
Benoit Faucher
et al.

Abstract: Secondary carbonate precipitates on the surface of clasts have rarely been reported from Antarctica. Here, we infer the origin, age and palaeo-environmental significance of the calcite crusts in the Untersee Oasis, East Antarctica. The distribution of calcite crusts, which are up to 1 mm thick, is limited to locations with residual snow patches, and they have some of the highest δ18O (up to +17.4‰ Vienna Standard Mean Ocean Water (VSMOW)) and δ13C (up to +14.6‰ Vienna Pee Dee Belemnite (VPDB)) compositions of … Show more

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