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The Huygens-Hellas giant dike system on Mars: Implications for Late Noachian Early Hesperian volcanic resurfacing and climatic evolution

Head, J. W.; Neukum, G.; Wilson, L. +1 more

Two narrow, broadly arcuate, low ridges extend for 600 700 km in western Terra Tyrrhena, Mars, crosscut ancient Noachian terrain, and are associated with Early Hesperian plains, which cover ∼30% of Mars. Geological relationships suggest that the ridges represent near-surface erosional remnants of subsurface dikes, solidified magma-filled cracks th…