Auxiliary material for this article contains an extensive description of the methods employed for our analysis, and comprises a text file, three tab-delimited tables, and five figures. These files are meant to be digested together as a methods manuscript to accompany the main manuscript.

gbc1245-sup-0001-README.txtplain text document8KREADME.txt
gbc1245-sup-0002-fs01.tifTIFF image104Kfs01. FeKa maps through data analysis steps for a representative sample (96006p, OSP, 71m) mapped in July 2003.
gbc1245-sup-0003-fs02.tifTIFF image199Kfs02. Ti XRF map of SOFeX mesh blank showing Ti threshold (10th percentile) in white, outlining the “hole” regions.
gbc1245-sup-0004-fs03.tifTIFF image132Kfs03. Cr XRF maps of SOFeX mesh blank.
gbc1245-sup-0005-fs04.tifTIFF image88Kfs04. Determination of Fe noise function using sample Jul96006p (OSP, 71m) and Cr as a noise diagnostic.
gbc1245-sup-0006-fs05.tifTIFF image70Kfs05. Sensitivity of Fe hot spot threshold definitions.
gbc1245-sup-0007-ts01.txtplain text document1Kts01. XRF data analysis: >53 um sample parameters.
gbc1245-sup-0008-ts02.txtplain text document1Kts02. XRF data analysis: >53 um mesh parameters.
gbc1245-sup-0009-ts03.txtplain text document1Kts03. XRF data analysis: 1-53 um sample parameters.
gbc1245-sup-0010-text01.txtplain text document31Ktext01. The main prose of the methods description as well as references.
gbc1245-sup-0011-t01.txtplain text document2KTab-delimited Table 1.
gbc1245-sup-0012-t02.txtplain text document2KTab-delimited Table 2.

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