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Sponge Gemmules from Lake Sediments in the Puget Lowland, Washington

Published online by Cambridge University Press:  20 January 2017

Judith Turner
Judith Turner*
Affiliation:
Botany Department, University of Durham, South Road, Durham, DH1 3LE, England
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Abstract

Gemmules of five species of freshwater sponge found in deposits at Cedar Mountain bog in the southeastern Puget Lowland were used to infer that during the late-glacial period the water was calcareous, was not deficient in SiO2, was aerobic, and had a pH in the range 6.6–8.5. This is consistent with plant fossil data. In view of their paleoenvironmental potential it is worth looking for gemmules when extracting other fossils from lake sediments.

Information

Type
Research Article
Information
Quaternary Research , Volume 24 , Issue 2 , July 1985 , pp. 240 - 243
Copyright
University of Washington

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References

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