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. 2018 May 1;399:66–83. doi: 10.1016/j.margeo.2017.11.016

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© 2017 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig. 10 — The proportion of buried iceberg ploughmarks orientated between 135° and 180° for each of the interpreted palaeo-surfaces. Vertical axis: percentage of anomalous fraction of ploughmarks (orientated between 135° and 180°). Horizontal axis: tentative timeframe of Naust Formation (Ottesen et al., 2009). Each data point represents an individual palaeo-surface and is positioned according to the provisional age correlations. Semi-transparent light blue bands highlight the surfaces that contain anomalous (i.e., > 10%) fraction of ploughmarks oriented between 135° and 180°. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)