F1. Location map of ODP Site 1256, Leg 206.
F2. Flux vs. microwave-assisted acid digestions.
F3. Shipboard vs. shore-based flux fusion digestions.
F4. Depth profiles of major and trace elements.
F5. Depth profiles of Ba/Ti, Al/Ti, and Fe/Al ratios.
T1. Accuracy of reference material NIST-1c in shore-based measurements.
T2. Reproducibility of each digestion method.
T3. Results from flux fusion and microwave acid digestions.
T4. Shore-based flux fusion vs. microwave-assisted acid digestions.
T5. Results from microwave acid digestions.
T6. Shipboard flux fusion vs. shore-based microwave-assisted acid digestions.