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. 2018 May 23;173(6):48. doi: 10.1007/s00410-018-1465-2

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© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Cartoons showing the operation of micro-settling, as initially proposed by Niemi and Courtney (1983).

Reproduced, by permission of The Royal Society of Edinburgh and EB Watson, from Miller et al. (1988)