These trace element data were collected by a Niton XLF X-ray fluorescence machine (units in ppm), while magnetic susceptibility (MS) data (units in SI) were collected using a Bartington MS2 meter. Within the spreadsheet, this data is organized by site and each sample has a unique row of data. This spreadsheet also lists the difference between "field" labels (in centimeters from the beach) and "lab" labels (in centimeters from the top of the column) presented in the associated manuscript. Code to plot these data is available upon request to Dr. Marion McKenzie.

<0 = <LOD