| Title | A portable extruder for precision high-resolution subsampling of unconsolidated cores |
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| Author | Patterson, R T; Nasser, N A; Tremblay, S; Galloway, J M |
| Source | Journal of Paleolimnology 2021 p. 1-7, https://doi.org/10.1007/s10933-021-00203-y |
| Image |  |
| Year | 2021 |
| Alt Series | Natural Resources Canada, Contribution Series 20200574 |
| Publisher | Springer Science and Business Media B.V. |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf; html |
| Subjects | surficial geology/geomorphology; sedimentology; Science and Technology; Nature and Environment; lake sediment cores; core samples; sampling techniques; sampling methods; in-field instrumentation;
limnology; paleolimnology; lacustrine sediments |
| Illustrations | schematic diagrams; photographs |
| Program | Environmental
Geoscience Mackenzie River |
| Released | 2021 06 05 |
| Abstract | We developed a portable extruder for precise and accurate high-resolution subsampling of unconsolidated sediment cores. This extruder is capable of producing subsamples at a minimum 1-mm resolution and
is designed for easy operation and maintenance in the field. Movement of the threaded extruder rod (½" 8 start acme thread) through the core barrel is driven by a crank wheel graduated in 1-mm increments. This extruder design is particularly useful
for obtaining incremental subsamples for applications where high-resolution subsamples of identical size are required (e.g. time series analysis, climate variability, land use change, contamination), and for use in field settings where it is
impractical to deploy a freeze corer. |
| Summary | (Plain Language Summary, not published)
A new piece of equipment was designed and built to extrude sediments collected using gravity sediment cores from lake beds. The new extruder can slice
sediments from the core in the field at 1-mm increments. The equipment is designed to be portable for field work. This publication describes and illustrates the new sediment extruder device. |
| GEOSCAN ID | 327821 |
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