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Data release for Oxygen isotopes in terrestrial gastropod shells track Quaternary climate change in the American Southwest

Dates

Publication Date
Start Date
2015
End Date
2021

Citation

Rech, J.A., Pigati, J.S., Springer, K.B., Bosch, S., Nekola, J.C., and Yanes, Y., 2021, Data release for Oxygen isotopes in terrestrial gastropod shells track Quaternary climate change in the American Southwest: U.S. Geological Survey data release, https://doi.org/10.5066/P9EISWFZ.

Summary

Recent studies have shown the oxygen isotopic composition (δ18O) of modern terrestrial gastropod shells is determined largely by the δ18O of precipitation. This implies that fossil shells could be used to reconstruct the δ18O of paleo-precipitation as long as the hydrologic pathways of the local watershed and the shell isotope systematics are well understood. In this study, we measured the δ18O values of 456 individual gastropod shells collected from paleowetland deposits in the San Pedro Valley, Arizona that range in age from ~29.1 to 9.8 ka. Isotopic differences of up to 2‰ were identified between the four taxa analyzed (Succineidae, Pupilla hebes, Gastrocopta tappaniana, and Vallonia gracilicosta), with Succineidae shells yielding [...]

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0_Data_Dictionary_SPV_isotope_study.csv 883 Bytes text/csv
1_Stable_Isotope_Data_SPV_isotope_study.csv 38.01 KB text/csv

Purpose

These data were used to determine if oxygen isotopes in shells can be used to track changes in the isotopic content of paleo-precipitation.

Additional Information

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9EISWFZ

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