Omnipresent authigenic calcite distorts Arctic radiocarbon chronology
Abstract As calcareous foraminifera precipitate their shells from the surrounding water mass, they are the basis of most marine radiocarbon chronologies and paleo-proxies.Nevertheless, post-mortem alteration of shells, especially addition of authigenic calcite, impact proxy records.In the Arctic Ocean, authigenic calcite overgrowth on foraminifera