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Figure above: Comparisons of Jurassic Navajo Sandstone (left) as terrestrial analogs to Mars (right, photo credits- NASA/JPL). A&B: Spheroidal iron oxide concretions and hematite “blueberries”. C&D: Cross bedding. E&F: Polygonal weathering cracks.
Figure above: Comparisons of Jurassic Navajo Sandstone (left) as terrestrial analogs to Mars (right, photo credits- NASA/JPL). A&B: Spheroidal iron oxide concretions and hematite “blueberries”. C&D: Cross bedding. E&F: Polygonal weathering cracks.