Poster Number 107
See more from this Division: General Discipline Sessions
See more from this Session: Planetary Geology (Posters)
Abstract:
We first discuss the morphology of terrestrial pingos and their geologic contexts. Then we use that information to asses hypothesized pingos on Mars. In our assessment, PLFs in Mars' polar region and equatorial regions may be explained as other landforms than massive ice-cored mounds. PLFs in the mid-latitudes, most notably Utopia basin, are strong candidates for collapsed pingos. The latitudinal distribution of likely pingos and collapsed pingos matches the distribution of other inferred near-surface ground ice features that are attributed to obliquity variations. This correlation suggests that the Martian pingos and collapsed pingos may have also formed during the last period of high obliquity. Hypothesized water sources for the high-likelihood pingo forms included both hydrostatic/near-surface taliks and hydraulic/sub- and intra-permafrost talik flow.
See more from this Division: General Discipline Sessions
See more from this Session: Planetary Geology (Posters)