| Literature DB >> 30192826 |
Ceri Shipton, James Blinkhorn, Paul S Breeze, Patrick Cuthbertson, Nick Drake, Huw S Groucutt, Richard P Jennings, Ash Parton, Eleanor M L Scerri, Abdullah Alsharekh, Michael D Petraglia.
Abstract
[This corrects the article DOI: 10.1371/journal.pone.0200497.].Year: 2018 PMID: 30192826 PMCID: PMC6128555 DOI: 10.1371/journal.pone.0203488
Source DB: PubMed Journal: PLoS One ISSN: 1932-6203 Impact factor: 3.240
Fig 5Plan of the Whalen et al. and Palaeodeserts trenches, showing Whalen’s three excavation units (S, T, and U).
Fig 7Boxplot of estimated core volume for selected Saffaqah localities, showing that localities associated with the dyke have the largest cores.
Note that the very largest cores from 206–76 are too large to show at this scale.
Fig 8Boxplot of the scar density index (scars per square inch) for a sample of 84 Saffaqah bifaces (including early stage pieces), showing that bifaces away from the dyke are more reduced than those near the dykes.
Fig 9The transects crossing the Saffaqah dyke at, from left to right, the western, central, and eastern portions of the dyke.
Note that artefacts stop abruptly on the approach to the dyke. Sites where a wadi flowed past a dyke were classed as dyke sites. Base layers reprinted with permission from Esri, ArcGIS, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, Aex, Getmapping, Aerogrid, IGN, IGP swisstopo, and the GIS User Community under a CC-BY license, original copyright 2018.
Fig 10A selection of bifaces from Saffaqah showing pale purple to dark brownish grey patination on the upper exposed surface, and orange patination on the lower protected surface.
Fig 11Two large blocks of andesite at the base of the dyke slope used as giant bifacial cores at Saffaqah 206–76.