Sponge Gemmules from Lake Sediments in the Puget Lowland, Washington
- 1 July 1985
- journal article
- Published by Cambridge University Press (CUP) in Quaternary Research
- Vol. 24 (2) , 240-243
- https://doi.org/10.1016/0033-5894(85)90010-9
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.Keywords
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