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  • Title: Meter-scale morphology of the north polar region of Mars.
    Author: Herkenhoff KE, Byrne S, Russell PS, Fishbaugh KE, McEwen AS.
    Journal: Science; 2007 Sep 21; 317(5845):1711-5. PubMed ID: 17885127.
    Abstract:
    Mars' north pole is covered by a dome of layered ice deposits. Detailed ( approximately 30 centimeters per pixel) images of this region were obtained with the High-Resolution Imaging Science Experiment on board the Mars Reconnaissance Orbiter (MRO). Planum Boreum basal unit scarps reveal cross-bedding and show evidence for recent mass wasting, flow, and debris accumulation. The north polar layers themselves are as thin as 10 centimeters but appear to be covered by a dusty veneer in places, which may obscure thinner layers. Repetition of particular layer types implies that quasi-periodic climate changes influenced the stratigraphic sequence in the polar layered deposits, informing models for recent climate variations on Mars.
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