A similar program exists in seawater, where by 44Ca/40Ca has a tendency to rise when the speed of removal of Ca2+ by mineral precipitation exceeds the enter of latest calcium in the ocean. In 1997, Skulan and DePaolo presented the main evidence of adjust in seawater 44Ca/40Ca above geologic time, https://environmentalengineeringc10977.dailyblogzz.com/28640563/a-secret-weapon-for-cad-drawings-in-irvine