Alpine glacier resilience and Neoglacial fluctuations linked to Holocene snowfall trends in the western United States.

ABSTRACT: Geological evidence indicates that glaciers in the western United States fluctuated in response to Holocene changes in temperature and precipitation. However, because moraine chronologies are characteristically discontinuous, Holocene glacier fluctuations and their climatic drivers remain ambiguous, and future glacier changes are uncertain. Here, we construct a continuous 10-thousand-year (ka) record of glacier activity in the Teton Range, Wyoming, using glacial and environmental indicators in alpine lake sediments. We show that Teton glaciers persisted in some form through early Holocene warmth, likely as small debris-covered glaciers or rock glaciers. Subsequent Neoglacial ice expansion began ~6.3 ka, with two prominent glacier maxima at ~2.8 and 0.1 ka that were separated by a multicent

SUBMITTER: Larsen DJ 

PROVIDER: S-EPMC7673796 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature