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. 2017 Jul 10;8:15978. doi: 10.1038/ncomms15978

Figure 9. Relationship of water depth to seafloor pressure on Mars.

Figure 9

Using a conservative estimate of extent of the Eridania sea (700 m contour), the depth of the sea can be estimated. Most deep basin deposits likely formed in deep water (400–1,200 m) (a). Water pressure at this depth (∼20–50 bars) would be less than that on Earth due to the lower gravity on Mars (b). The pressure at this depth would have affected the style of volcanism.