Physical Weathering Contributes to Underground Water Retention in Porous Sierra Nevada Rocks (1 of 4) (IMAGE)

American Association for the Advancement of Science (AAAS)

Physical Weathering Contributes to Underground Water Retention in Porous Sierra Nevada Rocks (1 of 4)

Caption

A researcher holds a core tube containing weathered rock from the subsurface. Cores like these were analyzed for porosity, strain, and chemical mass loss, which measure water holding potential and reveal how it was produced. This material relates to a paper that appeared in the Sept. 18, 2019, issue of Science Advances, published by AAAS. The paper, by J.L. Hayes at Dickinson College in Carlisle, PA, and colleagues was titled, "Porosity production in weathered rock: Where volumetric strain dominates over chemical mass loss."

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Credit: Pete Hartsough

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