A sledge microtome for high resolution subsampling of freeze cores |
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Authors: | Andrew L Macumber R Timothy Patterson Lisa A Neville Hendrik Falck |
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Institution: | (1) Department of Earth Sciences, Carleton University, Ottawa, ON K1S 5B6, Canada;(2) NWT Geoscience Office, P.O. Box 1500, Yellowknife, NT. X1A 2R3, Canada |
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Abstract: | We describe a sledge microtome designed for the high-resolution subsampling of freeze cores. This inexpensive freeze-core
microtome is capable of producing precise subsamples at mm to sub-mm resolution without sediment loss and cross-contamination.
Such a subsampling resolution permits recognition of sub-decadal to annual events even in systems with low sedimentation rates.
The freeze-core microtome is particularly useful for obtaining high-resolution subsamples at the environmentally important
sediment-water interface due to freeze corers being capable of capturing this boundary with minimal disturbance as compared
to other coring methods. |
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