Maria Figueroa, a research geologist with the U.S. Geological Survey holds two splits from a mudstone
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Mudstone
Maria Figueroa, a research geologist with the U.S. Geological Survey holds two splits from a mudstone recovered from the seafloor using human occupied vehicle Alvin during the 2025 Aleutian Arc expedition.
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Credit

The Aleutian Arc: Integrated Exploration of Biodiversity at Priority Benthic Habitats (USGS/BOEM/NOAA/ONR). Photographer: Art Howard.

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The Aleutian Arc: Integrated Exploration of Biodiversity at Priority Benthic Habitats