Determination of pollen accumulation rates in frozen sediments
Abstract Pollen accumulation rates (PAR) of 48 samples from a permafrost core were calibrated to assess the influence of ice lensing on the calculations. Results show that permafrost formation can radically change PAR values. Accumulation of segregated ice is a major source of error, while the 9% vo...
| Published in: | Permafrost and Periglacial Processes |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1993
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1002/ppp.3430040108 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430040108 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430040108 |
| Summary: | Abstract Pollen accumulation rates (PAR) of 48 samples from a permafrost core were calibrated to assess the influence of ice lensing on the calculations. Results show that permafrost formation can radically change PAR values. Accumulation of segregated ice is a major source of error, while the 9% volumetric expansion of pore water upon freezing must also be considered. The basic result of these influences is the exaggeration of sedimentation rates and sample volumes. |
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