Tag Archives: glaciers

Latitude controlled Amazonian ice flows

Signs of underground ice deposited in the Amazonian period (the most recent in Martian history) are common in many places on Mars. Evidence includes tropical mountain glacier deposits, lobate debris aprons, lineated valley fill, concentric crater fill, and pedestal craters. … Continue reading

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Southern polar eskers point to warmer past

Ice caps and glaciers on Mars today are “cold based,” meaning they are frozen solid to the ground beneath them. Scientists think the ice has been this way for most of the Amazonian period, the latest chapter in Mars’ geological … Continue reading

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Dry ice glaciers?

Scientists examining rocky remnants in Mars’ northern polar region believe they have found evidence for a type of glacier unknown on Earth – one where the ice is made of frozen carbon dioxide rather than water. Mikhail Kreslavsky (University of … Continue reading

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A polar ocean leaves few clay deposits

The northern lowlands of Mars have long invited the notion that in ancient times they once contained a now-vanished polar ocean. Yet a longstanding argument against such was the lack of widespread clay minerals that would naturally occur with such … Continue reading

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