Example of log sheet used to record structural and orientation data and observations from the working half of split cores, Expedition 352. SiO 2, comparing pXRF data for oxidized Hole U1440B sample powders prepared for LOI measurements with ICP-AES solution analysis measurements. SiO 2, comparing pXRF results for nonoxidized rock sample powders from Hole U1440B with thin section billets cut at adjacent positions in the core to test the effectiveness of pXRF as a means of measuring elemental abundances on rock surfaces. Reference material: JB-2, JB-3, BHVO-2, BCR-2, AGV-1, MRG-1, DTS-1, and JP-3 standards and analyzed Chichijima Island boninite Samples X88, 32108, and 40618. pXRF reference materials data correlation plots for reported data, Expedition 352.

Thermo Fisher Niton X元t GOLDD+ pXRF on board the JOIDES Resolution with (A) mounting stand and (B) general purpose sample mount. Plots A and C include both ICP-AES and pXRF data plots B and D include only pXRF data. (B) Distribution of high-silica, low-silica, and basaltic boninites, based on major element data. (A) Correlation of Ti/Zr with SiO 2 showing relatively high scatter. Evolved boninites (high-magnesium andesites) contain <300 ppm Cr. The data are skewed to high Cr contents by ICP-AES analyses, resulting in a relatively high Cr concentration at 8 wt% MgO. MgO correlation for ICP-AES samples, Expedition 352. Note the overall general scatter in the data resulting both from alteration and precision of the ICP-AES analyses. Unfiltered ICP-AES data collected during Expedition 352 plotted on the classification diagrams. Classification of siliciclastic sediment and sedimentary rock containing 8 wt%, TiO 2 52 wt%. Lithology colors are similar to those widely used by land-based geologists on geological maps and sections. Colors, patterns, and symbols used on VCDs as generated by DESClogik, Expedition 352. IODP convention for naming sites, holes, cores, sections, and samples. Expedition 352 methods PDF Download figures Download tables Cited by

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