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Data release for Late glacial-Younger Dryas climate in interior Alaska as inferred from the isotope values of land snail shells

Dates

Publication Date
Start Date
2021
End Date
2023

Citation

Nield, C.B., Yanes, Y., Reuther, J.D., Muhs, D.R., Pigati, J.S., Miller, J.H., and Druckenmiller, P.S., 2023, Data release for Late glacial-Younger Dryas climate in interior Alaska as inferred from the isotope values of land snail shells: U.S. Geological Survey data release, https://doi.org/10.5066/P953H59T.

Summary

The isotopic values of fossil snail shells can be important archives of past climate. Here we present the first carbon (δ13C) and oxygen (δ18O) isotope values of radiocarbon-dated and live-collected snails in interior Alaska to explore changes in vegetation and humidity through the late glacial period (14-11.7 ka). Snail shell δ13C values were relatively consistent through the late glacial. However, late glacial shell δ13C values are 2.8‰ higher than modern shells. This offset is best explained by changes in the δ13C values of plants consumed by snails. Snail shell δ18O values varied through the late glacial, which can be partially explained by changes in relative humidity (RH). RH during the snail growing period was modeled based [...]

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0_Data_Dictionary_Alaska_snail_isotope_study.csv 3.45 KB text/csv
1_Stable_Isotope_Data_Alaska_snail_isotope_study.csv 9.37 KB text/csv
2_Radiocarbon_Data_Alaska_snail_isotope_study.csv 1.08 KB text/csv
3_Site Information_Data_Alaska_snail_isotope_study.csv 432 Bytes text/csv

Purpose

These data were used to determine the driving forces of oxygen isotopes in shells of gastropods living in central Alaska.

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  • USGS Data Release Products

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P953H59T

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