An XRF scan of a sediment core from the Cariaco Basin (off Venezuela) combines observations from all three instrument sensors. The X-ray image (gray and black) reveals sedimentary layers that are not otherwise visible in a standard photograph (brown). The concentration of titanium, overlaid in yellow, indicates past fluctuations in atmospheric moisture and dust in the region. (Courtesy of Liviu Giosan, WHOI)[back]
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