Page 27 - Studia Universitatis Hereditati, vol 13(2) (2025)

Table 3: Radiocarbon Ages for the Osor Bay (core OSOR 2) Sedimentary Succession (elaborated by Croatian Geolog-
ical Survey, 2025)
Depth Lab.code Material Conventional d C Calibrated Age Calibrated Age (BC) Prob.
13
(cm) age (BP) (BP) (%)
70–71 Beta-703103 Marine Shell 2210 +/- 30 BP +1.1 o/oo 1680–1366 cal BP 270–584 cal AD 95.4
122–124 Beta-703104 Marine Shell 2740 +/- 30 BP +1.6 o/oo 2318–1996 cal BP 369–47 cal BC 95.4
195–197 Beta-703105 Marine Shell 5410 +/- 30 BP +2.5 o/oo 5621–5313 cal BP 3672–3364 cal BC 95.4

brown) and grain size occurred (195–197 cm) silt; unit 5, 78.5–82.5 cm depth, dark grey claye-
yielded ages of approx. between 5621–5313 cal ly silt, with shell fragments; unit 6, 82.5–102 cm
BP (3672–3364 cal BC). The brown sedimenta- depth, light yellowish brown middle- to coarse- 27
ry succession gradually transitions to grey at the grained sand, almost entirely shells and shell
depth of 70 cm which was dated at 1680–366 cal fragments; unit 7, 102–151 cm depth, dark grey
BP (270–584 cal AD). Based on the chronolo- clayey silt, some iron straining, shells and shell
gy, the sedimentation rate is estimated to be 0.3 fragments; unit 8, 151–164 cm depth, light olive
mm/year. brown clayey silt; unit 9, 164–251 cm depth light
olive brown clayey silt, iron oxide particles and Dip Your Finger in the Sea...
Jaz Bay nodules, possible greying, very few shells; unit
Lithology and Sediment Texture 10, 235.5–284 cm depth, yellowish bown clayey
The description of the core, taken for OSL-PD, silt, lots of iron oxide and manganese particles
includes the following units: unit 1, between 3.5– and nodules, some calcium carbonate nodules,
8 cm depth in core, a greyish brown silt with very few shell fragments; and unit 11, 284–304
some clay and sand; unit 2, 8–21 cm depth, a cm depth, light yellowish brown clayey silt, lots
light brownish grey coarse sand with some silt of iron oxide and manganese particles and nod-
and clay; unit 3, 21–37 cm depth, a light grey very ules, some calcium carbonate nodules, very few
coarse sand, almost entirely shell and shell frag- shell fragments. Units 1 to 7 are marine; units 8
ments; unit 4, 37–75 cm depth, dark grey clayey to 11, terrestrial.

Table 4: Effective Environmental Dose Rates Following Water Correction (elaborated by Kinnaird et al. 2025). Effec-
a
tive Beta dose rate combining water content corrections with inverse grain size attenuation factors obtained by Me-
jdahl (1979) for K, U, and Th; weighted combination of estimates from ICP-MS, ICP-OES and uDOSE
b
Lab Position Water content / % Cosmic dose / Effective dose rates, wet / mGy a-1
code mGy a -1
Beta a,b Gamma b Total b
1529_5 Core 2/5 OSL1 24 ± 7 0.15 ± 0.02 0.89 ± 0.07 0.76 ± 0.05 1.80 ± 0.09
1530_4 Core 3/4 OSL2 24 ± 7 0.15 ± 0.01 1.71 ± 0.13 1.49 ± 0.11 3.36 ± 0.17

Table 5: Burial Doses, Total Effective Environmental Dose Rates and Corresponding Depositional Ages for CER-
SA1529 and 1530 (elaborated by Kinnaird et al. 2025)
Lab code Paleodose / Gy Aliquots / n Dose rate / mGy a-1 Age /ka Calender years
1529_5 3.35 ± 0.04 24 (24) 1.80 ± 0.09 1.86 ± 0.10 AD 170 ± 100
1530_4 23.08 ± 0.17 20 (20) 3.35 ± 0.17 6.89 ± 0.44 -