Geomorphologic Characteristics of Polygonal Features on Chloride-Bearing Deposits on Mars: Implications for Martian Hydrology and Astrobiology

Abstract

Over 600 chloride-bearing deposits (chlorides) have been identified on the southern highlands of Mars. These chlorides have critical implications for hydrology and astrobiology: they are indicators of an evaporating super saturated solution, and they could have provided habitat environments for halophilic microorganisms and preserved organic matter. One of the prominent geomorphology characteristics of these chloride-bearing regions is the polygonal features within them. The origin of these polygonal features is still in debate. In this study, we have surveyed 153 locations of chlorides using 441 high resolution imaging science experiment (HiRISE) images to characterize the geomorphology of polygonal features. We identified 3 types of polygonal features of distinct geomorphologic characteristics: fractures, raised ridges, and transitional polygons between fractures and raised ridges. We evaluate previously proposed hypotheses of the formation of the polygonal features, and suggest that the 3 types of polygonal features are indicators of different stages of salt crust formation. Salt crust is usually formed through multiple groundwater activities, and it often occurs in playa environment on Earth. The unique hydrological and astrobiological implications of the chlorides with polygonal features make these deposits of high priority for future landed on and/or sample return exploration missions of Mars.

Keywords

chlorides / polygonal feature / playa / hydrology / astrobiology / Mars

References

[1] Andrews-Hanna J C, Lewis K W. Early Mars Hydrology: 2. Hydrological Evolution in the Noachian and Hesperian Epochs. Journal of Geophysical Research, 2011, 116 E2 E02007.

[2] Anglés A, Li Y L. The Western Qaidam Basin as a Potential Martian Environmental Analogue: An Overview. Journal of Geophysical Research: Planets, 2017, 122(5): 856-888.

[3] Bandfield J L. Atmospheric Correction and Surface Spectral Unit Mapping Using Thermal Emission Imaging System Data. Journal of Geophysical Research, 2004, 109 E10 E10008.

[4] Christensen P R, Bandfield J L, Hamilton V E, . Mars Global Surveyor Thermal Emission Spectrometer Experiment: Investigation Description and Surface Science Results. Journal of Geophysical Research: Planets, 2001, 106(E10): 23823-23871.

[5] Christensen P R, Jakosky B M, Kieffer H H, . The Thermal Emission Imaging System (THEMIS) for the Mars 2001 Odyssey Mission. Space Science Reviews, 2004, 110(1/2): 85-130.

[6] Christiansen F W. Polygonal Fracture and Fold Systems in the Salt Crust, Great Salt Lake Desert, Utah. Science, 1963, 139(3555): 607-609.

[7] Davila A F, Duport L G, Melchiorri R, . Hygroscopic Salts and the Potential for Life on Mars. Astrobiology, 2010, 10(6): 617-628.

[8] Ebinger E, Mustard J. Linear Ridges in the Nilosyrtis Region of Mars: Implications for Subsurface Fluid Flow. Lunar and Planetary Science Conference, The Woodlands, 2015.

[9] Edwards C S, Christensen P R, Hill J. Mosaicking of Global Planetary Image Datasets: 2. Modeling of Wind Streak Thicknesses Observed in Thermal Emission Imaging System (THEMIS) Daytime and Nighttime Infrared Data. Journal of Geophysical Research, 2011.

[10] Ehlmann B L, Swayze G A, Milliken R E, . Discovery of Alunite in Cross Crater, Terra Sirenum, Mars: Evidence for Acidic, Sulfurous Waters. American Mineralogist, 2016, 101(7): 1527-1542.

[11] El-Maarry M R, Pommerol A, Thomas N. Analysis of Polygonal Cracking Patterns in Chloride-Bearing Terrains on Mars: Indicators of Ancient Playa Settings. Journal of Geophysical Research: Planets, 2013, 118(11): 2263-2278.

[12] El-Maarry M R, Watters W, McKeown N K, . Potential Desiccation Cracks on Mars: A Synthesis from Modeling, Analogue-Field Studies, and Global Observations. Icarus, 2014, 241: 248-268.

[13] Fassett C I, Head J W III. Valley Network-Fed, Open-Basin Lakes on Mars: Distribution and Implications for Noachian Surface and Subsurface Hydrology. Icarus, 2008, 198(1): 37-56.

[14] Fish S A, Shepherd T J, McGenity T J, . Recovery of 16S Ribosomal RNA Gene Fragments from Ancient Halite. Nature, 2002, 417(6887): 432-436.

[15] Gillespie A R, Kahle A B, Walker R E. Color Enhancement of Highly Correlated Images. I. Decorrelation and HSI Contrast Stretches. Remote Sensing of Environment, 1986, 20(3): 209-235.

[16] Glotch T D, Bandfield J L, Tornabene L L, . Distribution and Formation of Chlorides and Phyllosilicates in Terra Sirenum, Mars. Geophysical Research Letters, 2010, 37(16): 127-137.

[17] Glotch T D, Bandfield J L, Wolff M J, . Constraints on the Composition and Particle Size of Chloride Salt-Bearing Deposits on Mars. Journal of Geophysical Research: Planets, 2016, 121(3): 454-471.

[18] Griffith J D, Willcox S, Powers D W, . Discovery of Abundant Cellulose Microfibers Encased in 250 Ma Permian Halite: A Macromolecular Target in the Search for Life on other Planets. Astrobiology, 2008, 8(2): 215-228.

[19] Head J W, Mustard J F. Breccia Dikes and Crater-Related Faults in Impact Craters on Mars: Erosion and Exposure on the Floor of a Crater 75 km in Diameter at the Dichotomy Boundary. Meteoritics & Planetary Science, 2006, 41(10): 1675-1690.

[20] Herkenhoff K E, Byrne S, Russell P S, . Meter-Scale Morphology of the North Polar Region of Mars. Science, 2007, 317(5845): 1711-1715.

[21] Huang J, Salvatore M, Edwards C, . A Complex Fluviolacustrine Environment on Early Mars and Its Astrobiological Potentials. Astrobiology, 2018, 18(8): 1081-1091.

[22] Hynek B M, Beach M, Hoke M R T. Updated Global Map of Martian Valley Networks and Implications for Climate and Hydrologic Processes. Journal of Geophysical Research, 2010, 115 E9 E9008.

[23] Hynek B M, Osterloo M K, Kierein-Young K S. Late-Stage Formation of Martian Chloride Salts through Ponding and Evaporation. Geology, 2015, 43(9): 787-790.

[24] Jensen H B, Glotch T D. Investigation of the Near-Infrared Spectral Character of Putative Martian Chloride Deposits. Journal of Geophysical Research, 2011, 116 E12 E00J03.

[25] Kerber L, Dickson J L, Head J W, . Polygonal Ridge Networks on Mars: Diversity of Morphologies and the Special Case of the Eastern Medusae Fossae Formation. Icarus, 2017, 281: 200-219.

[26] Kirk R L, Howington-Kraus E, Rosiek M R, . Ultrahigh Resolution Topographic Mapping of Mars with MRO HiRISE Stereo Images: Meter-Scale Slopes of Candidate Phoenix Landing Sites. Journal of Geophysical Research, 2008, 113 E12 E00A24.

[27] Krinsley D B. A Geomorphological and Paleoclimatological Study of the Playas of Iran. Journal of Hydrology, 1970, 16 1 66.

[28] Levy J S, Head J W, Marchant D R. Concentric Crater Fill in Utopia Planitia: History and Interaction between Glacial “Brain Terrain” and Periglacial Mantle Processes. Icarus, 2009, 202(2): 462-476.

[29] Levy J, Head J, Marchant D. Thermal Contraction Crack Polygons on Mars: Classification, Distribution, and Climate Implications from HiRISE Observations. Journal of Geophysical Research, 2009.

[30] Malin M C, Bell J F I, Cantor B A, . Context Camera Investigation on Board the Mars Reconnaissance Obiter. Journal ofGeophysical Research, 2007, 112 E5 E05S04.

[31] Mangold N. High Latitude Patterned Grounds on Mars: Classification, Distribution and Climatic Control. Icarus, 2005, 174(2): 336-359.

[32] Mangold N, Poulet F, Mustard J F, . Mineralogy of the Nili Fossae Region with OMEGA/Mars Express Data: 2. Aqueous Alteration of the Crust. Journal of Geophysical Research: Planets, 2007, 112 E8 E08S04.

[33] McEwen A S, Eliason E M, Bergstrom J W, . Mars Reconnaissance Orbiter’s High Resolution Imaging Science Experiment (HiRISE). Journal of Geophysical Research, 2007, 112 E5 E05S02.

[34] Mellon M T, Arvidson R E, Marlow J J, . Periglacial Land-forms at the Phoenix Landing Site and the Northern Plains of Mars. Journal of Geophysical Research, 2008, 113 E4 E00A23.

[35] Mellon M T, Feldman W C, Prettyman T H. The Presence and Stability of Ground Ice in the Southern Hemisphere of Mars. Icarus, 2004, 169(2): 324-340.

[36] Mellon M T, Jakosky B M. The Distribution and Behavior of Martian Ground Ice during Past and Present Epochs. Journal of Geophysical Research, 1995, 100(E6): 11781-11799.

[37] Morgenstern A, Hauber E, Reiss D, . Deposition and Degradation of a Volatile-Rich Layer in Utopia Planitia and Implications for Climate History on Mars. Journal of Geophysical Research, 2007, 112 E6 E06010.

[38] Mormile M R, Biesen M A, Gutierrez M C, . Isolation of Halobacterium Salinarum Retrieved Directly from Halite Brine Inclusions. Environmental Microbiology, 2003, 5(11): 1094-1102.

[39] Murchie S L, Mustard J F, Ehlmann B L, . A Synthesis of Martian Aqueous Mineralogy after 1 Mars Year of Observations from the Mars Reconnaissance Orbiter. Journal of Geophysical Research, 2009, 114 E2 E00D06.

[40] Mutch T A, Binder A B, Huck F O, . The Surface of Mars: The View from the Viking 1 Lander. Science, 1976, 193(4255): 791-801.

[41] Okubo C H, McEwen A S. Fracture-Controlled Paleo-Fluid Flow in Candor Chasma, Mars. Science, 2007, 315(5814): 983-985.

[42] Osterloo M M, Anderson F S, Hamilton V E, . Geologic Context of Proposed Chloride-Bearing Materials on Mars. Journal of Geophysical Research, 2010, 115 E10 E10012.

[43] Osterloo M M, Hamilton V E, Bandfield J L, . Chloride-Bearing Materials in the Southern Highlands of Mars. Science, 2008, 319(5870): 1651-1654.

[44] Park J S, Vreeland R H, Cho B C, . Haloarchaeal Diversity in 23, 121 and 419 MYA Salts. Geobiology, 2009, 7(5): 515-523.

[45] Putzig N E, Mellon M T, Kretke K A, . Global Thermal Inertia and Surface Properties of Mars from the MGS Mapping Mission. Icarus, 2005, 173(2): 325-341.

[46] Radax C, Gruber C, Stan-Lotter H. Novel Haloarchaeal 16S RRNA Gene Sequences from Alpine Permo-Triassic Rock Salt. Extremophiles, 2001, 5(4): 221-228.

[47] Rosen M R. The Importance of Groundwater in Playas: A Review of Playa Classification and the Sedimentology and Hydrology of Playas, GSA Special Papers 289, 1994.

[48] Ruesch O, Poulet F, Vincendon M, . Compositional Investigation of the Proposed Chloride-Bearing Materials on Mars Using Near-Infrared Orbital Data from OMEGA/MEx. Journal of Geophysical Research: Planets, 2012, 117 E11 E00J13.

[49] Saper L, Mustard J F. Extensive Linear Ridge Networks in Nili Fossae and Nilosyrtis, Mars: Implications for Fluid Flow in the Ancient Crust. Geophysical Research Letters, 2013, 40(2): 245-249.

[50] Schubert B A, Lowenstein T K, Timofeeff M N. Microscopic Identification of Prokaryotes in Modern and Ancient Halite, Saline Valley and Death Valley, California. Astrobiology, 2009, 9(5): 467-482.

[51] Shean D E, Alexandrov O, Moratto Z M, . An Automated, Open-Source Pipeline for Mass Production of Digital Elevation Models (DEMs) from Very-High-Resolution Commercial Stereo Satellite Imagery. ISPRS Journal of Photogrammetry and Remote Sensing, 2016, 116: 101-117.

[52] Soare R J, Osinski G R, Roehm C L. Thermokarst Lakes and Ponds on Mars in the very Recent (Late Amazonian) Past. Earth and Planetary Science Letters, 2008, 272(1/2): 382-393.

[53] Stein N, Grotzinger J P, Schieber J, . Desiccation Cracks Provide Evidence of Lake Drying on Mars, Sutton Island Member, Murray Formation, Gale Crater: REPLY. Geology, 2018, 46(8): e450-e450.

[54] Stivaletta N, Barbieri R, Picard C, . Astrobiological Significance of the Sabkha Life and Environments of Southern Tunisia. Planetary and Space Science, 2009, 57(5/6): 597-605.

[55] Thomas D S G. Arid Zone Geomorphology: Process, Form and Change in Drylands, 2011.

[56] Villanueva G L, Mumma M J, Novak R E, . Strong Water Isotopic Anomalies in the Martian Atmosphere: Probing Current and Ancient Reservoirs. Science, 2015, 348(6231): 218-221.

[57] Vreeland R H, Jones J, Monson A, . Isolation of Live Cretaceous (121-112 Million Years Old) Halophilic Archaea from Primary Salt Crystals. Geomicrobiology Journal, 2007, 24(3/4): 275-282.

[58] Wang A L, Sobron P, Kong F, . Dalangtan Saline Playa in a Hyperarid Region on Tibet Plateau: II. Preservation of Salts with High Hydration Degrees in Subsurface. Astrobiology, 2018, 18(10): 1254-1276.

[59] Wang C W, Hong H L, Li Z H, . Climatic and Tectonic Evolution in the North Qaidam since the Cenozoic: Evidence from Sedimen-tology and Mineralogy. Journal of Earth Science, 2013, 24(3): 314-327.

[60] Wray J J, Milliken R E, Dundas C M, . Columbus Crater and other Possible Groundwater-Fed Paleolakes of Terra Sirenum, Mars. Journal of Geophysical Research, 2011, 116 E1 E01001.

[61] Wray J J, Murchie S L, Squyres S W, . Diverse Aqueous Environments on Ancient Mars Revealed in the Southern Highlands. Geology, 2009, 37(11): 1043-1046.

[62] Xiao L, Wang J, Dang Y N, . A New Terrestrial Analogue Site for Mars Research: The Qaidam Basin, Tibetan Plateau (NW China). Earth-Science Reviews, 2017.

[63] Yi L W, Gu X P, Lu A H, . Atacamite and Nantokite in Kaerqueka Copper Deposit of Qimantag Area: Evidence for Cenozoic Climate Evolution of the Qaidam Basin. Journal of Earth Science, 2017, 28(3): 492-499.

[64] Zanetti M, Hiesinger H, Reiss D, . Distribution and Evolution of Scalloped Terrain in the Southern Hemisphere, Mars. Icarus, 2010, 206(2): 691-706.

[65] Zeng F M, Xiang S Y. Geochronology and Mineral Composition of the Pleistocene Sediments in Xitaijinair Salt Lake Region, Qaidam Basin: Preliminary Results. Journal of Earth Science, 2017, 28(4): 622-627.