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A Benthos 5010 digital image of a volcanic constructional escarpment composed of pillow lava with a dusting of sediment. The view is looking downhill (toward the upper left). The red arrows point to a small lobe of lava that drapes over the next pillow lower down the slope. This successive accumulation of lava during seafloor eruptions is how the ocean crust and mid-ocean ridge are built up. The distance across the bottom of the image is about 4 meters.

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