Geochemistry and organic carbon data of sediment cores from Veliko jezero, Mljet, Croatia

To investigate the sediments deposited in the lake that was flooded due to Holocene sea level rise, two cores were sampled. Length of the cores is 459 cm (M1-A) and 407 cm (M2). Semi-quantitative geochemistry of the cores was determined by XRF core scanner in 1 cm resolution for both cores and 2 mm resolution, in the interval from 114-242 cm, for M1-A core. Additionally, total organic carbon and nitrogen were analyzed in 1 cm resolution in M1-A core in interval from 114-237 cm, while δ13C was determined in 10 cm resolution from 5 - 459 cm. Furthermore, semi-quantitative X-ray diffraction was done in 3 cm interval from 114-239 cm in M1-A core. Research was done on the eastern Adriatic coast on the Island of Mljet, Croatia, in marine lake Veliko jezero. Veliko Jezero is a submerged doline.