Mg-Ca, B-Ca and U-Ca in shells of benthic foraminifers
tracers of temperature and seawater carbonate chemistry
Raitzsch, Markus, 2008: Mg-Ca, B-Ca and U-Ca in shells of benthic foraminifers - tracers of temperature and seawater carbonate chemistry. Univ. Bremen, 88 S., DOI: 10.23689/fidgeo-183.
Mg/Ca ratios in benthic foraminiferal shells are frequently used in paleoceanographic studies to estimate past bottom water temperatures. Apart from temperature, other factors may exert additional influences on foraminiferal Mg/Ca. These include the Mg/Ca ratio of seawater, partial dissolution of shell calcite, salinity, physiological effects, and, probably of capital importance, the carbonate chemistry of seawater. In this context, the seperate effects of temperature and seawater carbonate chemistry on the magnesium incorporation into benthic foraminideral calcite are unraveled and quantified in this thesis...
Geochemie der Fauna