| Abstract: | This paper presents newly discovered candidate cave entrances into Martian near-surface lava tubes, volcano-tectonic fracture systems, and pit craters and describes their characteristics and exploration possibilities. These candidates are all collapse features that occur either intermittently along laterally continuous trench-like depressions or in the floors of sheer-walled atypical pit craters. As viewed from orbit, locations of most candidates are visibly consistent with known terrestrial features such as tube-fed lava flows, volcano-tectonic fractures, and pit craters, each of which forms by mechanisms that can produce caves. Although we cannot determine subsurface extents of the Martian features discussed here, some may continue unimpeded for many kilometers if terrestrial examples are indeed analogous. The features presented here were identified in images acquired by the Mars Odyssey‘s Thermal Emission Imaging System visible-wavelength camera, and by the Mars Reconnaissance Orbiter‘s Context Camera. Select candidates have since been targeted by the High-Resolution Imaging Science Experiment. Martian caves are promising potential sites for future human habitation and astrobiology investigations; understanding their characteristics is critical for long-term mission planning and for developing the necessary exploration technologies. |
| Genre: | Article |
| ProdID: | 70039388 |
| Citation Author: | Cushing, Glen E. |
| Citation Contributing Office: | Astrogeology Science Center |
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| Citation End Page: | 47 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Cave and Karst Studies |
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| Citation Phsyical Description: | 15 p. |
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| Citation Publisher: | National Speleological Society |
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| Citation Search Results Text: | Candidate cave entrances on Mars; 2012; Article; Journal; Journal of Cave and Karst Studies; Cushing, Glen E. |
| Citation Start Page: | 33 |
| Citation Volume: | 74 |
| Citation Year: | 2012 |
| Type: | citation/reference |
| Text: | Candidate cave entrances on Mars; 2012; Article; Journal; Journal of Cave and Karst Studies; Cushing, Glen E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.4311/2010EX0167R |
| Date Other: | Sat, 6 Oct 2012 00:00 -0500 |
| Publisher: | National Speleological Society |
