Fig. (5) Record of Mg/Ca measured in Globigerinoides ruber (white variety) in sediment core from the Pigmy Basin. Sea surface temperature conversion of Mg/Ca is shown on right axis. Red dots indicate individual Mg/Ca in each sample and solid line is three-point running mean. Triangles on age scale show location of radiocarbon dates used to construct the age model for the record. Gray bars show age range of the Maunder, Sporer, Wolf and Oort sunspot minima (modified from Richey et al. (2007) [28]).