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News Release 12-138

Ancient Alteration of Seawater Chemistry Linked With Past Climate Change

Dissolution or creation of huge gypsum deposits changed sulfate content of the oceans

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Satellite image of Iran's Zagros Mountains.

Gypsum from land to sea: Iran's Zagros Mountains contain much water-soluble gypsum.

Credit: NASA


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Photo showing space shuttle view of Iran's Zagros Mountains.

Space shuttle view of Earth's "gypsum belt," which likely changed seawater chemistry.

Credit: NASA


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Photo of drillship JOIDES Resolution Honolulu Harbor.

The drillship JOIDES Resolution during one of its port calls in Honolulu Harbor.

Credit: IODP


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Photo of geoscientist Ulrich Wortmann, right, and colleagues aboard the JOIDES Resolution.

Geoscientist Ulrich Wortmann (right) and colleagues aboard the JOIDES Resolution.

Credit: University of Toronto


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Photo of marine scientist Adina Paytan near the ocean.

NSF-funded marine scientist Adina Paytan near the ocean she studies.

Credit: NSF COSEE


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Cover of the July 20, 2012 issue of the journal Science.

The researchers' work is described in the July 20, 2012 issue of the journal Science.

Credit: Copyright AAAS 2012


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