Geochemistry of Martian soil and bedrock in mantled and less mantled terrains with gamma ray data from Mars Odyssey

Journal of Geophysical Research: Planets

Volumn 112, Issue 3, 2007, Pages

  Newsom, Horton E ^a   Crumpler, Larry S ^a,b   Reedy, Robert C ^a   Petersen, Michael T ^a   Newsom, Gary C ^a   Evans, Larry G ^c   Taylor, G Jeffrey ^d   Keller, John M ^e   Janes, Daniel M ^e   Boynton, William V ^e   Kerry, Kris E ^e   Karunatillake, Suniti ^f  

^a UNIVERSITY OF NEW MEXICO   (United States)

^b NEW MEXICO MUSEUM OF NATURAL HISTORY AND SCIENCE   (United States)

^c Computer Sciences Corporation ^*  (United States)

^d NASA HEADQUARTERS   (United States)

^e UNIVERSITY OF ARIZONA   (United States)

^f Department of Obstetrics Gynecology   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BEDROCK; CHEMICAL COMPOSITION; GAMMA RAY SPECTROMETRY; GEOCHEMISTRY; MARS; SOIL CHEMISTRY; TERRAIN;

PHYMATA;

EID: 34249914204     PISSN: 01480227     EISSN: None     Source Type: Journal    
DOI: 10.1029/2006JE002680     Document Type: Article

References (115)

1. Anderson, R. C., J. M. Dohm, M. P. Golombek, A. F. C. Haldemann, B. J. Franklin, K. L. Tanaka, J. Lias, and B. Peer (2001), Primary centers and secondary concentrations of tectonic activity through time in the western hemisphere of Mars, J. Geophys. Res., 106, 20,563-20,585.
2. Arvidson, R. E., P. R. Christensen, J. Garvin, and M. Mellon (2002), On the distribution and implications of mantled and exhumed terrains on Mars, paper presented at Solar System Remote Sensing Symposium, Lunar and Planet. Inst., Houston, Tex.
3. Arvidson, R. E., et al. (2004), Localization and physical properties experiments conducted by Opportunity at Meridiani Planum, Science, 306, 1730-1733.
4. Bandfield, J. L. (2002), Global mineral distributions on Mars, J. Geophys. Res., 107(E6), 5042, doi:10.1029/2001JE001510.
5. Bandfield, J. L. (2003), Martian global surface mineralogy from the Thermal Emission Spectrometer: Surface emissivity, mineral map, and spectral endmember data products, paper presented at Sixth International Conference on Mars, 20-25 July, Pasadena, Calif.
6. Bandfield, J. L., V. E. Hamilton, and P. R. Christensen (2000), A global view of Martian surface compositions from MGS-TES, Science, 287, 1626-1630.
7. Banin, A., B. C. Clark, and H. Wänke (1992), Surface chemistry and mineralogy, in Mars, edited by H. H. Kieffer et al., pp. 594-625, Univ. of Ariz. Press, Tucson.
8. Banin, A., F. X. Han, I. Kan, and A. Cicelsky (1997), Acidic volatiles and the Mars soil, J. Geophys. Res., 102, 13,341-13,356.
9. Bibring, J. P., et al. (2005), Mars surface diversity as revealed by the OMEGA/Mars Express observations, Science, 307, 1576-1581.
10. Bibring, J. P., Y. Langevin, J. F. Mustard, F. Poulet, R. Arvidson, A. Gendrin, B. Gondet, N. Mangold, P. Pinet, and F. Forget (2006), Global mineralogical and aqueous Mars history derived from OMEGA/Mars Express data, Science, 312(5772), 400-404.
11. Binder, A. B., R. E. Arvidson, E. A. Guinness, K. L. Jones, E. C. Morris, T. A. Mutch, D. C. Pieri, and C. Sagan (1977), The geology of the Viking Lander 1 site, J. Geophys. Res., 82, 4439-4451.
12. Blaney, D. L. (1998), Mars dust formation by impact craters into volatile materials and aerosol formation of sulfate duricrust, Lunar Planet. Sci., XXIX, Abstract 1655.
13. Borg, L. E., and D. S. Draper (2003), A petrogenetic model for the origin and compositional variation of the Martian basaltic meteorites, Meteorit. Planet. Sci., 38, 1713-1731.
14. Borg, L. E., L. E. Nyquist, H. Weismann, C. Y. Shih, and Y. Reese (2003), The age of Dar al Gani 476 and the differentiation history of the Martian meteorites inferred from their radiogenic isotopic systematics, Geochim. Cosmochim. Acta, 67, 3519-3536.
15. Boynton, W. V., et al. (2002), Distribution of hydrogen in the near surface of Mars: Evidence for subsurface ice deposits, Science, 297, 81-85.
16. Boynton, W. V., et al. (2004), The Mars Odyssey Gamma-Ray Spectrometer instrument suite, Space Sci. Rev., 110, 37-83.
17. Bradley, B. A., S. E. H. Sakimoto, H. Frey, and J. R. Zimbelman (2002), Medusae Fossae Formation: New perspectives from Mars Global Surveyor, J. Geophys. Res., 107(E8), 5058, doi:10.1029/2001JE001537.
18. Brückner, J., G. Dreibus, R. Rieder, and H. Wänke (2003), Refined data of Alpha Proton X-ray Spectrometer analyses of soils and rocks at the Mars Pathfinder site: Implications for surface chemistry, J. Geophys. Res., 108(E12), 8094, doi:10.1029/2003JE002060.
19. Burger, P., C. K. Shearer, H. E. Newsom, R. C. Reedy, and G. J. Taylor (2006), Microscale distribution and behavior of Th and K in late-stage melts and shock melts in olivine-phyric shergottites: Implications for the interpretation of remote sensing and in situ measurements of the Martian surface, Lunar Planet. Sci., XXXVII, Abstract 2370.
20. Cabrol, N. A., J. D. Farmer, E. A. Grin, L. Richter, L. Soderblom, R. Li, K. Herkenhoff, G. A. Landis, and R. E. Arvidson (2006), Aqueous processes at Gusev crater inferred from physical properties of rocks and soils along the Spirit traverse, J. Geophys. Res., 111, E02S20, doi:10.1029/2005JE002490.
21. Christensen, P. R. (1986a), Regional dust deposits on Mars: Physical properties, age, and history, J. Geophys. Res., 91, 3533-3545.
22. Christensen, P. R. (1986b), The spatial distribution of rocks on Mars, Icarus, 68, 217-238.
23. Christensen, P. R., J. L. Bandfield, M. D. Smith, V. E. Hamilton, and R. N. Clark (2000), Identification of a basaltic component on the Martian surface from Thermal Emission Spectrometer data, J. Geophys. Res., 105, 9609-9621.
24. Christensen, P. R., et al. (2001), Mars Global Surveyor Thermal Emission Spectrometer experiment: Investigation description and surface science results, J. Geophys. Res., 106, 23,823-23,872.
25. Clark, B. C. (1993), Geochemical components in Martian soil, Geochim. Cosmochim. Acta, 57, 4575-4581.
26. Clark, B. C., and A. K. Baird (1979), Is the Martian lithospbere sulfur rich?, J. Geophys. Res., 84, 8395-8403.
27. Clark, B. C., A. K. Baird, R. J. Weldon, D. M. Tsusaki, L. Schnabel, and M. P. Candelaria (1982), Chemical composition of Martian fines, J. Geophys. Res., 87, 10,059-10,067.
28. Craddock, R. A., L. S. Crumpler, and J. C. Aubele (1997), Geology of central Chryse Planitia and the Viking 1 landing site: Implications for the Mars Pathfinder mission, J. Geophys. Res., 102, 4161-4183.
29. Crown, D. A., and R. Greeley (1993), Volcanic geology of Hadriaca Patera and the eastern Hellas region of Mars, J. Geophys. Res., 98, 3441-3451.
30. Crumpler, L. S. (1997), Geotraverse from Xanthe Terra to Chryse Planitia: Viking 1 Lander region of Mars, J. Geophys. Res., 102, 4201-4218.
31. Crumpler, L. S., and K. L. Tanaka (2003), Geology and MER target site characteristics along the southern rim of Isidis Planitia, Mars, J. Geophys. Res., 108(E12), 8080, doi:10.1029/2002JE002040.
32. Crumpler, L. S., J. W. Head, and J. C. Aubele (1996), Calderas on Mars: Characteristics, structural evolution, and associated flank structures, in Proceedings of the Conference on Volcanic Instability on Earth and Other Planets, Geol. Soc. Spec. Publ., 110, 307-347.
33. Crumpler, L. S., J. C. Aubele, and R. Craddock (2001), 1:500,000-scale geologic map of Central Chryse Planitia/Viking 1 Lander region, Mars, U.S. Geol. Surv. Geol. Invest. Ser., Map I-2693.
34. Dohm, J. M., and K. L. Tanaka (1999), Geology of the Thaumasia region, Mars: Plateau development, valley origins, and magmatic evolution, Planet. Space Sci., 47, 411-431.
35. Dreibus, G., and H. Wänke (1984), Accretion of the Earth and the inner planets, in Proceedings of the 27th International Geology Conference, vol. 11, pp. 1-20, VNU Sci., Utrecht, Netherlands.
36. Evans, L. G., R. D. Starr, R. C. Reedy, and W. V. Boynton (2004), Elemental composition variations for large dusty and rocky regions on mars using gamma-ray data for the Mars Odyssey Gamma-Ray Spectrometer, Lunar Planet. Sci., XXX, Abstract 1258.
37. Evans, L. G., R. C. Reedy, R. D. Starr, K. E. Kerry, and W. V. Boynton (2006), Analysis of gamma ray spectra measured by Mars Odyssey, J. Geophys. Res., 111, E03S04, doi:10.1029/2005JE002657 [printed 112(E3), 2007].
38. Feldman, W. C., et al. (2005), Topographic control of hydrogen deposits at low latitudes to midlatitudes of Mars, J. Geophys. Res., 110, E11009, doi:10.1029/2005JE002452.
39. Flynn, G. J., and D. S. McKay (1990), An assessment of the meteoritic contribution to the Martian soil, J. Geophys. Res., 95, 14,497-14,509.
40. Gellert, R., et al. (2006), Alpha Particle X-Ray Spectrometer (APXS): Results from Gusev crater and calibration report, J. Geophys. Res., 111, E02S05, doi:10.1029/2005JE002555.
41. Goetz, W., et al. (2005), Indication of drier periods on Mars from the chemistry and mineralogy of atmospheric dust, Nature, 436, 62-65.
42. Grant, J. A., et al. (2004), Surficial deposits at Gusev Crater along spirit rover traverses, Science, 305, 807-810, doi:10.1126/ science.1099849.
43. Grant, J. A., M. P. Golombek, A. F. C. Haldemann, L. Crumpler, R. Li, W. A. Watters, and Athena Science Team (2005), Field studies of crater gradation in Gusev Crater and Meridiani Planum using the Mars Exploration Rovers, paper presented at Role of Volatiles and Atmospheres on Martian Impact Craters 2005, Lunar and Planet. Inst., Houston, Tex.
44. Greeley, R., and D. A. Crown (1990), Volcanic geology of Tyrrhena Patera, Mars, J. Geophys. Res., 95, 7133-7149.
45. Greeley, R., and J. E. Guest (1987), Geologic map of the eastern equatorial region of Mars, U.S. Geol. Surv. Misc. Invest. Ser., Map I-1802-B..
46. Greeley, R., and P. Spudis (1981), Volcanism on Mars, Rev. Geophys., 19, 31-41.
47. Greeley, R., et al. (2004), Wind-related processes detected by the Spirit rover at Gusev Crater, Mars, Science, 305, 810-821.
48. Gregg, T. K. P., D. A. Crown, and R. Greeley (1998), Geologic map of MTM quadrangle -20252, Tyrrhena Patera region of Mars, U.S. Geol. Surv. Misc. Invest., Map I-2556.
49. Haining, R. (2003), Spatial Data Analysis: Theory and Practice, pp. 273-286, Cambridge Univ. Press, New York.
50. Hare, T. M., and K. L. Tanaka (2004), Expansion in Geographic Information Services for PIGWAD, Lunar Planet. Sci., XXXV, Abstract 1765.
51. Hare, T. M., K. L. Tanaka, and J. A. Skinner (2003), GIS 101 for planetary research, paper presented at ISPRS WG IV/9: Extraterrestrial Mapping Workshop, "Advances in Planetary Mapping 2003", Lunar and Planet. Inst., Houston, Tex.
52. Harris, S. A. (1977), The aureole of Olympus Mons, Mars, J. Geophys. Res., 82, 3099-3107.
53. Haskin, L. A., et al. (2005), Water alteration of rocks and soils on Mars at the Spirit rover site in Gusev crater, Nature, 436, 66-69.
54. Hauck, S. A., II, and R. J. Phillips (2002), Thermal and crustal evolution of Mars, J. Geophys. Res., 107(E7), 5052, doi:10.1029/ 2001JE001801.
55. Herd, C. D. K. (2003), The oxygen fugacity of olivine-phyric Martian basalts and the components within the mantle and crust of Mars, Meteorit. Planet. Sci., 38, 1793-1805.
56. Hiesinger, H., and J. W. Head III (2004), The Syrtis Major volcanic province, Mars: Synthesis from Mars Global Surveyor data, J. Geophys. Res., 109, E01004, doi:10.1029/2003JE002143.
57. Hodges, C. A., and H. J. Moore (1994), Atlas of volcanic landforms on Mars, U. S. Geol. Surv. Prof, 1534.
58. Hoefen, T. M., R. N. Clark, J. L. Bandfield, M. D. Smith, J. C. Pearl, and P. R. Christensen (2003), Discovery of olivine in the Nili Fossae region of Mars, Science, 302, 627-630.
59. Ivanov, M. A., and J. W. Head III (2003), Syrtis Major and Isidis Basin contact: Morphological and topographic characteristics of Syrtis Major lava flows and material of the Vastitas Borealis Formation, J. Geophys. Res., 108(E6), 5063, doi:10.1029/2002JE001994.
60. Karunatillake, S., et al. (2006), Composition of northern low-albedo regions of Mars: Insights from the Mars Odyssey Gamma Ray Spectrometer, J. Geophys. Res., 111, E03S05, doi:10.1029/2006JE002675 [printed 112(E3), 2007].
61. Keller, J. M., et al. (2006), Equatorial and midlatitude distribution of chlorine measured by Mars Odyssey GRS, J. Geophys. Res., 111, E03S08, doi:10.1029/2006JE002679 [printed 112(E3), 2007].
62. Kiefer, W. S. (2003), Melting in the Martian mantle: Shergottite formation and implications for present-day mantle convection on Mars, Meteorit. Planet. Sci., 38, 1815-1832.
63. Lopes, R. M. C., J. E. Guest, and C. J. Wilson (1982), Further evidence for a mass movement origin of the Olympus Mons aureole, J. Geophys. Res., 87, 9917-9928.
64. Malin, M. C., and K. S. Edgett (2000), Sedimentary rocks of early Mars, Science, 290, 1927-1937.
65. Malin, M. C., and K. S. Edgett (2001), Mars Global Surveyor Mars Orbiter Camera: Interplanetary cruise through primary mission, J. Geophys. Res., 106, 23,429-23,570.
66. McGovern, P. J., J. R. Smith, J. K. Morgan, and M. H. Bulmer (2004), Olympus Mons aureole deposits: New evidence for a flank failure origin, J. Geophys. Res., 109, E08008, doi:10.1029/2004JE002258.
67. McLennan, S. M. (2000), Chemical composition of Martian soil and rocks: Complex mixing and sedimentary transport, Geophys. Res. Lett., 27(9), 1335-1338.
68. McLennan, S. M. (2001), Crustal heat production and the thermal evolution of Mars, Geophys. Res. Lett., 28(21), 4019-4022.
69. McSween, H. Y., Jr., and K. Keil (2000), Mixing relationships in the Martian regolith and the composition of globally homogeneous dust, Geochim. Cosmochim. Acta, 64, 2155-2166.
70. McSween, H. Y., Jr., T. L. Grove, and M. B. Wyatt (2003), Constraints on the composition and petrogenesis of the Martian crust, J. Geophys. Res., 108(E12), 5135, doi:10.1029/2003JE002175.
71. Mellon, M. T., B. M. Jakosky, H. H. Kieffer, and P. R. Christensen (2000), High-resolution thermal inertia mapping from the Mars Global Surveyor Thermal Emission Spectrometer, Icarus, 148, 437-455.
72. Meyer, C., Jr. (2003), Mars Meteorite Compendium, JSC#27672, Rev. B, NASA Johnson Space Cent., Houston, Tex. (Available at http:// curator.jsc.nasa.gov/antmet/mmc/index.cfm)
73. Meyer, J. D., and M. J. Grolier (1977), Geologic map of the Syrtis Major Quadrangle, U.S. Geol. Surv. Misc. Invest. Ser., Map I-995.
74. Ming, D. W., et al. (2006), Geochemical and mineralogical indicators for aqueous processes in the Columbia Hills of Gusev crater, Mars, J. Geophys. Res., 111, E02S12, doi:10.1029/2005JE002560.
75. Moore, H. J., D. B. Bickler, J. A. Crisp, H. J. Eisen, J. A. Gensler, A. F. C. Haldemann, J. R. Matijevic, L. K. Reid, and F. Pavlics (1999), Soil-like deposits observed by Sojourner, the Pathfinder rover, J. Geophys. Res., 104, 8729-8746.
76. Morris, E. C. (1982), Aureole deposits of the Martian volcano Olympus Mons, J. Geophys. Res., 87, 1164-1178.
77. Morris, E. C., and K. L. Tanaka (1994), Geologic maps of the Olympus Mons region of Mars, U.S. Geol Surv. Misc. Invest. Ser, Map I-2327.
78. Morris, R. V., et al. (2004), Mineralogy at Gusev Crater from the Mössbauer Spectrometer on the Spirit Rover, Science, 305, 833-836.
79. Morris, R. V., et al. (2006), Mössbauer mineralogy of rock, soil, and dust at Gusev crater, Mars: Spirit's journey through weakly altered olivine basalt on the plains and pervasively altered basalt in the Columbia Hills, J. Geophys. Res., 111, E02S13, doi:10.1029/ 2005JE002584.
80. Mouginis-Mark, P. J. (2002), Prodigious ash deposits near the summit of Arsia Mons volcano, Mars, Geophys. Res. Lett., 29(16), 1768, doi:10.1029/2002GL015296.
81. Mouginis-Mark, P. J., and P. R. Christensen (2005), New observations of volcanic features on Mars from the THEMIS instrument, J. Geophys. Res., 110, E08007, doi:10.1029/2005JE002421.
82. Mustard, J. F., and J. M. Sunshine (1995), Seeing through the dust - Martian crustal heterogeneity and links to the SNC meteorites, Science, 267(5204), 1623-1626.
83. Mustard, J. F., S. Erard, J.-P. Bibring, J. W. Head, S. Hurtrez, Y. Langevin, C. M. Pieters, and C. J. Sotin (1993), The surface of Syrtis Major: Composition of the volcanic substrate and mixing with altered dust and soil, J. Geophys. Res., 98, 3387-3400.
84. Mutch, T. A., R. E. Arvidson, A. B. Binder, E. A. Guinness, and E. C. Morris (1977), The geology of the Viking Lander 2 site, J. Geophys. Res., 82, 4452-4467.
85. Nelson, M. J., H. E. Newsom, and D. S. Draper (2005), Incipient hydrothermal alteration of basalts and the origin of Martian soil, Geochim. Cosmochim. Acta, 69, 2701-2711.
86. Neumann, G. A., J. B. Abshire, O. Aharonson, J. B. Garvin, X. Sun, and M. T. Zuber (2003), Mars Orbiter Laser Altimeter pulse width measurements and footprint-scale roughness, Geophys. Res. Lett., 30(11), 1561, doi:10.1029/2003GL017048.
87. Newsom, H. E. (1980), Hydrothermal alteration of impact melt sheets with implications for Mars, Icarus, 44, 207-216.
88. Newsom, H. E., and J. J. Hagerty (1997), Chemical components of the Martian soil: Melt degassing, hydrothermal alteration, and chondritic debris, J. Geophys. Res., 102, 19,345-19,356.
89. Newsom, H. E., J. J. Hagerty, and F. Goff (1999), Mixed hydrothermal fluids and the origin of the Martian soil, J. Geophys. Res., 104, 8717-8728.
90. Newsom, H. E., M. J. Nelson, C. K. Shearer, and D. S. Draper (2005), The Martian soil as a geochemical sink for hydrothermally altered crustal rocks and mobile elements: Implications of early MER results, Lunar Planet Sci., XXXVI, Abstract 1142.
91. Noble, S. K., and C. M. Pieters (2001), Type 2 terrain: Compositional constraints on the Martian lowlands, Lunar Planet Sci., XXXII, abstract 1230.
92. Pike, R. J. (1978), Volcanoes of the inner planets: Some preliminary comparisons of gross topography, Proc. Lunar Planet Sci. Conf. 9th, 3239-3273.
93. Plescia, J. B. (1994), Geology of the small Tharsis volcanoes: Jovis Tholus, Ulysses Patera, Biblis Patera, Mars, Icarus, 111, 246-269.
94. Pollack, J. B., M. E. Ockert-Bell, and M. K. Shepard (1995), Viking lander image analysis of Martian atmospheric dust, J. Geophys. Res., 100, 5235-5250.
95. Poulet, F., J. P. Bibring, J. F. Mustard, A. Gendrin, N. Mangold, Y. Langevin, R. E. Arvidson, B. Gondet, and C. Gomez (2005), Phyllosilicates on Mars and implications for early Martian climate, Nature, 438, 623-627.
96. Putzig, N. E., M. T. Mellon, K. A. Kretke, and R. E. Arvidson (2005), Global thermal inertia and surface properties of Mars from the MGS mapping mission, Icarus, 173, 325-341.
97. Rieder, R., et al. (2004), Chemistry of rocks and soils at Meridiani Planum from the Alpha Particle X-ray Spectrometer, Science, 306, 1746-1749.
98. Rotto, S. L., and K. L. Tanaka (1989), Geologic map of the Chryse Planitia region, U.S. Geol. Surv, Misc. Invest. Ser, Map I-2030.
99. Schaber, G. G. (1982), Syrtis Major: A low-relief, volcanic shield, J. Geophys. Res., 87, 9852-9866.
100. Schultz, R. A., and H. V. Frey (1990), A new survey of multiring basins on Mars, J. Geophys. Res., 95, 14,175-14,189.
101. Scott, D. H., and K. L. Tanaka (1986), Geologic map of the western equatorial region of Mars, scale 1:15,000,000, U.S. Geol. Surv. Misc. Invest. Ser, Map I-1802-A..
102. Squyres, S. W., et al. (2004), The Spirit Rover's Athena Science Investigation at Gusev Crater, Mars, Science, 305, 794-799, doi:10.1126/science.1100194.
103. Tanaka, K. L., and M. G. Chapman (1992), Kasei Valles, Mars: Interpretations of canyon materials and flood sources, Proc. Lunar Planet Sci. Conf. 22nd, 73-86.
104. Tanaka, K. L., and G. L. Leonard (1995), Geology and landscape evolution of the Hellas region of Mars, J. Geophys. Res., 100, 5407-5432.
105. Taylor, G. J., et al. (2006a), Bulk composition and early differentiation of Mars, J. Geophys. Res., 111, E03S10, doi:10.1029/2005JE002645 [printed 112(E3), 2007].
106. Taylor, G. J., et al. (2006b), Variations in K/Th on Mars, J. Geophys. Res., 111, E03S06, doi:10.1029/2006JE002676 [printed 112(E3), 2007].
107. Taylor, S. R., and S. M. McLennan (1985), The Continental Crust: Its Composition and Evolution: An Examination of the Geochemical Record Preserved in Sedimentary Rocks, Blackwell Sci., Malden, Mass.
108. Tomasko, M. G., L. R. Doose, M. Lemmon, P. H. Smith, and E. Wegryn (1999), Properties of dust in the Martian atmosphere from the Imager on Mars Pathfinder, J. Geophys. Res., 104, 8987-9007.
109. Wang, A., et al. (2006), Evidence of phyllosilicates in Wooly Patch, an altered rock encountered at West Spur, Columbia Hills, by the Spirit rover in Gusev crater, Mars, J. Geophys. Res., 111, E02S16, doi:10.1029/2005JE002516.
110. Wänke, H., and G. Dreibus (1988), Chemical composition and accretion history of the terrestrial planets, Philos. Trans. R. Soc. London, Ser. A, 325, 545-557.
111. Wänke, H., and G. Dreibus (1994), Chemistry and accretion history of Mars, Philos. Trans. R. Soc. London, Ser. A, 349, 285-293.
112. Wyatt, M. B., and H. Y. McSween (2002), Spectral evidence for weathered basalt as an alternative to andesite in the northern lowlands of Mars, Nature, 417, 263-266.
113. Yek, A. S., et al. (2005), An integrated view of the chemistry and mineralogy of Martian soils, Nature, 436, 49-54.
114. Zimbelman, J. R., and K. S. Edgett (1992), The Tharsis Montes, Mars: Comparison of volcanic and modified landforms, Proc. Lunar Planet. Sci. Conf. 22nd, 31-44.
115. Zimbelman, J. R., and R. Greeley (1982), Surface properties of ancient cratered terrain in the northern hemisphere of Mars, J. Geophys. Res., 87, 181-189.