Martian history - PowerPoint PPT Presentation

Remaining Uncertainties:

Eberswalde Crater Site. Specific Pros of Site: Setting - Eberswalde shows excellent preservation of what is highly likely to be a fluvial-deltaic deposit emplaced into a standing body of water that integrates sedimentary material from a broad source region.

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Remaining Uncertainties:

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SECONDARY CRATERING: AGE-DATING

SECONDARY CRATERING: AGE-DATING Secondary cratering may be important or dominant for forming smaller craters on Mars. If so, then the presumption of randomness (spatially/temporally) is wrong, undercutting long used methods of relative and absolute age-dating of geologic units on Mars.

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