All samples are characterized by a ferruginous fine calcareous matrix.11 Within the section, there are some dark reddish brown bodies, ranging in size from silt to coarse sand (0.05–1.5 mm). Almost all of these bodies share a reddish brown aureole and also have a nucleus of ferrizated foraminifera shell,12 indicating that the shell came into contact with iron oxides. These bodies may have originated within an ironoxide-bearing layer within the clay or chalk deposit. The matrix includes very fine subrounded to subangular grains (average size 0.2 mm) of quartz, feldspar, limestone, shell, coral (Amphiroa sp.), and sporadic chert. Firing temperatures are estimated between 700 and 750 °C for all but three vessels, which were fired at lower t...
