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Your search keyword '"Franz, H. B."' showing total 7 results
Start Over Author "Franz, H. B." Journal journal of geophysical research: planets
7 results on '"Franz, H. B."'

1. Sedimentary Organics in Glen Torridon, Gale Crater, Mars: Results From the SAM Instrument Suite and Supporting Laboratory Analyses

Author

Millan, M., primary, Williams, A. J., additional, McAdam, A. C., additional, Eigenbrode, J. L., additional, Steele, A., additional, Freissinet, C., additional, Glavin, D. P., additional, Szopa, C., additional, Buch, A., additional, Summons, R. E., additional, Lewis, J. M. T., additional, Wong, G. M., additional, House, C. H., additional, Sutter, B., additional, McIntosh, O., additional, Bryk, A. B., additional, Franz, H. B., additional, Pozarycki, C., additional, Stern, J. C., additional, Navarro‐Gonzalez, R., additional, Archer, D. P., additional, Fox, V., additional, Bennett, K., additional, Teinturier, S., additional, Malespin, C., additional, Johnson, S. S., additional, and Mahaffy, P. R., additional

Published
2022
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2. Constraining Alteration Processes Along the Siccar Point Group Unconformity, Gale Crater, Mars: Results From the Sample Analysis at Mars Instrument

Author

Sutter, B., primary, McAdam, A. C., additional, Wong, G. M., additional, Clark, J. V., additional, Archer, P. D., additional, Franz, H. B., additional, Gasda, P. J., additional, Ming, D. W., additional, Yen, A., additional, Lewis, J. M. T., additional, Schwenzer, S. P., additional, Turner, S. M. R., additional, Rampe, E. B., additional, Eigenbrode, J. L., additional, Stern, J. C., additional, Thompson, L. M., additional, Dehouck, E., additional, Bedford, C., additional, Banham, S., additional, Bryk, A. B., additional, O’Connell‐Cooper, C., additional, House, C. S., additional, Millan, M., additional, Freissinet, C., additional, Navarro‐Gonzalez, R., additional, Mahaffy, P. R., additional, and Malespin, C. A., additional

Published
2022
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3. Evolved Gas Analyses of Sedimentary Rocks From the Glen Torridon Clay‐Bearing Unit, Gale Crater, Mars: Results From the Mars Science Laboratory Sample Analysis at Mars Instrument Suite

Author

McAdam, A. C., primary, Sutter, B., additional, Archer, P. D., additional, Franz, H. B., additional, Wong, G. M., additional, Lewis, J. M. T., additional, Clark, J. V., additional, Millan, M., additional, Williams, A. J., additional, Eigenbrode, J. L., additional, Knudson, C. A., additional, Freissinet, C., additional, Glavin, D. P., additional, Stern, J. C., additional, Navarro‐González, R., additional, Achilles, C. N., additional, Ming, D. W., additional, Morris, R. V., additional, Bristow, T. F., additional, Rampe, E. B., additional, Thorpe, M. T., additional, House, C. H., additional, Andrejkovičová, S., additional, Bryk, A. B., additional, Fox, V. K., additional, Johnson, S. S., additional, Mahaffy, P. R., additional, and Malespin, C. A., additional

Published
2022
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4. Evolved Gas Analyses of Sedimentary Rocks and Eolian Sediment in Gale Crater, Mars: Results of the Curiosity Rover's Sample Analysis at Mars Instrument from Yellowknife Bay to the Namib Dune

Author

Sutter, B, McAdam, A. C, Mahaffy, P. R, Ming, D. W, Edgett, K. S, Rampe, E. B, Eigenbrode, J. L, Franz, H. B, Freissinet, C, Grotzinger, J. P, Steele, A, House, C. H, Archer, P. D, Malespin, C. A, Navarro-González, R, Stern, J. C, Bell, J. F, Calef, F. J, Gellert, R, Glavin, D. P, Thompson, L. M, and Yen, A. S

Subjects
Lunar And Planetary Science And Exploration
Abstract

The sample analysis at Mars instrument evolved gas analyzer (SAM-EGA) has detected evolved water, H2, SO2, H2S, NO, CO2, CO, O2, and HCl from two eolian sediments and nine sedimentary rocks from Gale Crater, Mars. These evolved gas detections indicate nitrates, organics, oxychlorine phase, and sulfates are widespread with phyllosilicates and carbonates occurring in select Gale Crater materials. Coevolved CO2 (160 +/- 248-2373 +/- 820 μgC(CO2)/g) and CO (11 +/- 3-320 +/- 130 μgC(CO)/g) suggest that organic C is present in Gale Crater materials. Five samples evolved CO2 at temperatures consistent with carbonate (0.32 +/- 0.05-0.70 +/- 0.1 wt % CO3). Evolved NO amounts to 0.002 +/- 0.007-0.06 +/- 0.03 wt % NO3. Evolution of O2 suggests that oxychlorine phases (chlorate/perchlorate) (0.05 +/- 0.025-1.05 +/- 0.44 wt % ClO4) are present, while SO2 evolution indicates the presence of crystalline and/or poorly crystalline Fe and Mg sulfate and possibly sulfide. Evolved H2O (0.9 +/- 0.3-2.5 +/- 1.6 wt % H2O) is consistent with the presence of adsorbed water, hydrated salts, interlayer/structural water from phyllosilicates, and possible inclusion water in mineral/amorphous phases. Evolved H2 and H2S suggest that reduced phases occur despite the presence of oxidized phases (nitrate, oxychlorine, sulfate, and carbonate). SAM results coupled with CheMin mineralogical and Alpha-Particle X-ray Spectrometer elemental analyses indicate that Gale Crater sedimentary rocks have experienced a complex authigenetic/diagenetic history involving fluids with varying pH, redox, and salt composition. The inferred geochemical conditions were favorable for microbial habitability and if life ever existed, there was likely sufficient organic C to support a small microbial population.

Published
2017
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5. Pyrolysis of Oxalate, Acetate, and Perchlorate Mixtures and the Implications for Organic Salts on Mars

Author

Lewis, J. M. T., primary, Eigenbrode, J. L., additional, Wong, G. M., additional, McAdam, A. C., additional, Archer, P. D., additional, Sutter, B., additional, Millan, M., additional, Williams, R. H., additional, Guzman, M., additional, Das, A., additional, Rampe, E. B., additional, Achilles, C. N., additional, Franz, H. B., additional, Andrejkovičová, S., additional, Knudson, C. A., additional, and Mahaffy, P. R., additional

Published
2021
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6. Formation of Tridymite and Evidence for a Hydrothermal History at Gale Crater, Mars

Author

Yen, A. S., primary, Morris, R. V., additional, Ming, D. W., additional, Schwenzer, S. P., additional, Sutter, B., additional, Vaniman, D. T., additional, Treiman, A. H., additional, Gellert, R., additional, Achilles, C. N., additional, Berger, J. A., additional, Blake, D. F., additional, Boyd, N. I., additional, Bristow, T. F., additional, Chipera, S., additional, Clark, B. C., additional, Craig, P. I., additional, Downs, R. T., additional, Franz, H. B., additional, Gabriel, T., additional, McAdam, A. C., additional, Morrison, S. M., additional, O’Connell‐Cooper, C. D., additional, Rampe, E. B., additional, Schmidt, M. E., additional, Thompson, L. M., additional, and VanBommel, S. J., additional

Published
2021
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7. In Situ Analysis of Opal in Gale Crater, Mars

Author

Rapin, W., primary, Chauviré, B., additional, Gabriel, T. S. J., additional, McAdam, A. C., additional, Ehlmann, B. L., additional, Hardgrove, C., additional, Meslin, P.‐Y., additional, Rondeau, B., additional, Dehouck, E., additional, Franz, H. B., additional, Mangold, N., additional, Chipera, S. J., additional, Wiens, R. C., additional, Frydenvang, J., additional, and Schröder, S., additional

Published
2018
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