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Liviu Giosan and colleagues extracting a sediment core from a marsh in the Danube Delta.

Liviu Giosan and colleagues extracting a sediment core from a marsh in the Danube Delta.
Liviu Giosan and colleagues extracting a sediment core from a marsh in the Danube Delta.
Liviu Giosan and colleagues extracting a sediment core from a marsh in the Danube Delta.
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Liviu Giosan and colleagues extracting a sediment core from a marsh in the Danube Delta.
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01/01/2004
core_C.jpg
Date is approximate.
Caption from Oceanus magazine, Vol. 45, No. 1, Pg. 25:
Liviu Giosan and colleagues extract a sediment core from a marsh to find clues to the evolution and past climate of the Danube Delta. An XRF scan of a sediment core from offshore Venezuela (not shown here) combines a digital photograph (brown) with an X-ray image (gray and black) that reveals sedimentary layers otherwise invisible to the naked eye. The concentration of titanium (overlaid in yellow) indicates past fluctuations in atmospheric moisture and dust in the region.
Courtesy of Liviu Giosan
Copyright © Woods Hole Oceanographic Institution
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