Geochemical Analysis and Beryllium-Dating Studies of Marine Core Sediment Belong to the Central Western Bay of Bengal

A gravity core having size of 4.12 cm was collected from the marginal coastal waters of central western Bay of Bengal, which covered the continental shelf off Krishna Delta (Nizampatnam Bay) during the 157 cruises of O. R.V. Sagar Kanya. It was subsampled with every 2 cm interval resulting a total of 212 samples. Half part of each sample was dried at 60 °C, grinded and sieved through 230 mesh size and studied for organic carbon (OC), calcium and magnesium carbonates (CaCO₃) & MgCO₃) by titration methods. By following ¹⁰Be/⁹Be dating study method; investigations pertaining to rate of sedimentation were also carried out and all the results interpreted based on the existing phenomenon.