Boron isotopes and B/Ca ratios of Porites corals from the eastern Hainan Island in the northern South China Sea

Annual-resolution d11B and B/Ca ratios of four fossil and one living corals from a fringing reef off the eastern Hainan Island in the northern South China Sea. Coral growth covers the periods of AD. 1063-1087, 1129-1255, 1628-1657, 1702-1772, and 1853-2011, respectively. The boron isotopes were measured by the MC-ICP-MS, while the B/Ca ratios were measured by ICP-MS.