By Ioannis Liritzis, Margaret C. Miller and L. Alappat
OSL dating of a stone built structure directly on the south of the Geometric period settlement of Zagora (Andros island, Aegean sea, Greece) was conducted to determine whether a minor access point to the site was ancient. Double single aliquot regeneration (SAR) protocol was recorded for total dose De calculation, in which samples were first stimulated with IR and the post IR blue light stimulated luminescence (BLSL) signal from quartz grains, at 220°C preheat temperature and OSL signal recorded during 40s blue light stimulation. Alpha counting, XRD, XRF were used for radioisotope content and mineralogy assessment. The construction was found to date to the 19th century CE.