Figure F1. Representative calibrations for Al and Fe from Site 1218. The four standard reference materials used in the calibration (BHVO-2 = Pahoehoe basalt lava flow, MAG-1 = marine mud, SCo-1 = Cody shale, NIST-1c = argillaceous limestone) are shown along with the blank analyses.

Figure F1. Representative calibrations for Al and Fe from Site 1218. The four standard reference materials used in the calibration (BHVO-2 = Pahoehoe basalt lava flow, MAG-1 = marine mud, SCo-1 = Cody shale, NIST-1c = argillaceous limestone) are shown along with the blank analyses.