A portable extruder for accurate and precise high-resolution subsampling of unconsolidated sediment cores

Patterson R. Timothy; Nasser Nawaf A.; Tremblay StevenGalloway Jennifer M.

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A portable extruder for accurate and precise high-resolution subsampling of unconsolidated sediment cores

机译：A portable extruder for accurate and precise high-resolution subsampling of unconsolidated sediment cores

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摘要

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 (1/2" 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.

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来源
《Journal of paleolimnology》 |2022年第2期|183-189|共7页
作者
Patterson R. Timothy; Nasser Nawaf A.; Tremblay StevenGalloway Jennifer M.;
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作者单位

Carleton Univ;

Geol Survey Canada GSC;

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原文格式 PDF
正文语种英语
中图分类自然地理学;陆地水文学、水文地理学（水象学）;
关键词
Portable core extruder; Precision sub-sampler; Core samples; Paleolimnology; Lacustrine sediment; RECONSTRUCTION;

A portable extruder for accurate and precise high-resolution subsampling of unconsolidated sediment cores

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