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Start Over Author "Ming, Douglas W." Journal journal of geophysical research: planets
17 results on '"Ming, Douglas W."'

1. Oxidized and Reduced Sulfur Observed by the Sample Analysis at Mars (SAM) Instrument Suite on the Curiosity Rover Within the Glen Torridon Region at Gale Crater, Mars

Author

Wong, Gregory M., primary, Franz, Heather B., additional, Clark, Joanna V., additional, McAdam, Amy C., additional, Lewis, James M. T., additional, Millan, Maëva, additional, Ming, Douglas W., additional, Gomez, Felipe, additional, Clark, Benton, additional, Eigenbrode, Jennifer L., additional, Navarro‐González, Rafael, additional, and House, Christopher H., additional

Published
2022
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2. Sulfur-bearing Phases Detected by Evolved Gas Analysis of the Rocknest Aeolian Deposit, Gale Crater, Mars

Author

McAdam, Amy C, Franz, Heather B, Sutter, Brad, Jr, Paul D. Archer, Freissinet, Caroline, Eigenbrode, Jennifer L, Ming, Douglas W, Atreya, Sushil K, Bish, David L, Blake, David F, Bower, Hannah E, Brunner, Anna, Buch, Arnaud, Glavin, Daniel P, Grotzinger, John P, Mahaffy, Paul R, McLennan, Scott M, Morris, Richard V, Navarro-González, Rafael, Rampe, Elizabeth B, Squyres, Steven W, Steele, Andrew, Stern, Jennifer C, Sumner, Dawn Y, and Wray, James J

Subjects
Lunar And Planetary Science And Exploration
Abstract

The Sample Analysis at Mars (SAM) instrument suite detected SO2, H2S, OCS, and CS2 from ~450 to 800degC during evolved gas analysis (EGA) of materials from the Rocknest aeolian deposit in Gale Crater, Mars. This was the first detection of evolved sulfur species from a Martian surface sample during in situ EGA. SO2 (~3-22 μmol) is consistent with the thermal decomposition of Fe sulfates or Ca sulfites, or evolution/desorption from sulfur-bearing amorphous phases. Reactions between reduced sulfur phases such as sulfides and evolved O2 or H2O in the SAM oven are another candidate SO2 source. H2S (~41-109 nmol) is consistent with interactions of H2O, H2 and/or HCl with reduced sulfur phases and/or SO2 in the SAM oven. OCS (~1-5nmol) and CS2 (~0.2-1 nmol) are likely derived from reactions between carbon-bearing compounds and reduced sulfur. Sulfates and sulfites indicate some aqueous interactions, although not necessarily at the Rocknest site; Fe sulfates imply interaction with acid solutions whereas Ca sulfites can form from acidic to near-neutral solutions. Sulfides in the Rocknest materials suggest input from materials originally deposited in a reducing environment or from detrital sulfides from an igneous source. The presence of sulfides also suggests that the materials have not been extensively altered by oxidative aqueous weathering. The possibility of both reduced and oxidized sulfur compounds in the deposit indicates a nonequilibrium assemblage. Understanding the sulfur mineralogy in Rocknest materials, which exhibit chemical similarities to basaltic fines analyzed elsewhere on Mars, can provide insight in to the origin and alteration history of Martian surface materials.

Published
2014
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3. Evidence for Perchlorates and the Origin of Chlorinated Hydrocarbons Detected by SAM at the Rocknest Aeolian Deposit in Gale Crater

Author

Glavin, Daniel P, Freissinet, Caroline, Miller, Kristen E, Eigenbrode, Jennifer L, Brunner, Anna E, Buch, Arnaud, Sutter, Brad, Archer, P. Douglas, Jr, Atreya, Sushil K, Brinckerhoff, William B, Cabane, Michel, Coll, Patrice, Conrad, Pamela G, Coscia, David, Dworkin, Jason P, Franz, Heather B, Grotzinger, John P, Leshin, Laurie A, Martin, Mildred G, McKay, Christopher, Ming, Douglas W, Navarro-Gonzalez, Rafael, Pavlov, Alexander, Steele, Andrew, Summons, Roger E, Szopa, Cyril, Teinturier, Samuel, and Mahaffy, Paul R

Subjects
Lunar And Planetary Science And Exploration
Abstract

A single scoop of the Rocknest aeolian deposit was sieved (less than 150 micrometers), and four separate sample portions, each with a mass of approximately 50 mg, were delivered to individual cups inside the Sample Analysis at Mars (SAM) instrument by the Mars Science Laboratory rover's sample acquisition system. The samples were analyzed separately by the SAM pyrolysis evolved gas and gas chromatograph mass spectrometer analysis modes. Several chlorinated hydrocarbons including chloromethane, dichloromethane, trichloromethane, a chloromethylpropene, and chlorobenzene were identified by SAM above background levels with abundances of approximately 0.01 to 2.3 nmol. The evolution of the chloromethanes observed during pyrolysis is coincident with the increase in O2 released from the Rocknest sample and the decomposition of a product of N-methyl-N-(tert-butyldimethylsilyl)-trifluoroacetamide (MTBSTFA), a chemical whose vapors were released from a derivatization cup inside SAM. The best candidate for the oxychlorine compounds in Rocknest is a hydrated calcium perchlorate (Ca(ClO4)2·nH2O), based on the temperature release of O2 that correlates with the release of the chlorinated hydrocarbons measured by SAM, although other chlorine-bearing phases are being considered. Laboratory analog experiments suggest that the reaction of Martian chlorine from perchlorate decomposition with terrestrial organic carbon from MTBSTFA during pyrolysis can explain the presence of three chloromethanes and a chloromethylpropene detected by SAM. Chlorobenzene may be attributed to reactions of Martian chlorine released during pyrolysis with terrestrial benzene or toluene derived from 2,6-diphenylphenylene oxide (Tenax) on the SAM hydrocarbon trap. At this time we do not have definitive evidence to support a nonterrestrial carbon source for these chlorinated hydrocarbons, nor do we exclude the possibility that future SAM analyses will reveal the presence of organic compounds native to the Martian regolith.

Published
2013
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4. Constraints on the Mineralogy and Geochemistry of Vera Rubin Ridge, Gale Crater, Mars, From Mars Science Laboratory Sample Analysis at Mars Evolved Gas Analyses

Author

McAdam, Amy C., primary, Sutter, Brad, additional, Archer, P. Douglas, additional, Franz, Heather B., additional, Wong, Gregory M., additional, Lewis, James M. T., additional, Eigenbrode, Jennifer L., additional, Stern, Jennifer C., additional, Knudson, Christine A., additional, Clark, Joanna V., additional, Andrejkovičová, Slavka, additional, Ming, Douglas W., additional, Morris, Richard V., additional, Achilles, Cherie N., additional, Rampe, Elizabeth B., additional, Bristow, Thomas F., additional, Navarro‐González, Rafael, additional, Mahaffy, Paul R., additional, Thompson, Lucy M., additional, Gellert, Ralf, additional, Williams, Amy J., additional, House, Christopher H., additional, and Johnson, Sarah S., additional

Published
2020
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5. Abiotic Input of Fixed Nitrogen by Bolide Impacts to Gale Crater During the Hesperian: Insights From the Mars Science Laboratory

Author

Navarro‐González, Rafael, primary, Navarro, Karina F., additional, Coll, Patrice, additional, McKay, Christopher P., additional, Stern, Jennifer C., additional, Sutter, Brad, additional, Archer, P. Douglas, additional, Buch, Arnaud, additional, Cabane, Michel, additional, Conrad, Pamela G., additional, Eigenbrode, Jennifer L., additional, Franz, Heather B., additional, Freissinet, Caroline, additional, Glavin, Daniel P., additional, Hogancamp, Joanna V., additional, McAdam, Amy C., additional, Malespin, Charles A., additional, Martín‐Torres, F. Javier, additional, Ming, Douglas W., additional, Morris, Richard V., additional, Prats, Benny, additional, Raulin, François, additional, Rodríguez‐Manfredi, José Antonio, additional, Szopa, Cyril, additional, Zorzano‐Mier, María‐Paz, additional, Mahaffy, Paul R., additional, Atreya, Sushil, additional, Trainer, Melissa G., additional, and Vasavada, Ashwin R., additional

Published
2019
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6. Diverse Lithologies and Alteration Events on the Rim of Noachian‐Aged Endeavour Crater, Meridiani Planum, Mars: In Situ Compositional Evidence

Author

Mittlefehldt, David W., primary, Gellert, Ralf, additional, vanBommel, Scott, additional, Ming, Douglas W., additional, Yen, Albert S., additional, Clark, Benton C., additional, Morris, Richard V., additional, Schröder, Christian, additional, Crumpler, Larry S., additional, Grant, John A., additional, Jolliff, Bradley L., additional, Arvidson, Raymond E., additional, Farrand, William H., additional, Herkenhoff, Kenneth E., additional, Bell, James F., additional, Cohen, Barbara A., additional, Klingelhöfer, Göstar, additional, Schrader, Christian M., additional, and Rice, James W., additional

Published
2018
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7. Zinc and germanium in the sedimentary rocks of Gale Crater on Mars indicate hydrothermal enrichment followed by diagenetic fractionation

Author

Berger, Jeff A., primary, Schmidt, Mariek E., additional, Gellert, Ralf, additional, Boyd, Nicholas I., additional, Desouza, Elstan D., additional, Flemming, Roberta L., additional, Izawa, Matthew R. M., additional, Ming, Douglas W., additional, Perrett, Glynis M., additional, Rampe, Elizabeth B., additional, Thompson, Lucy M., additional, VanBommel, Scott J. V., additional, and Yen, Albert S., additional

Published
2017
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8. Abundances and implications of volatile‐bearing species from evolved gas analysis of the Rocknest aeolian deposit, Gale Crater, Mars

Author

Archer, Paul Douglas, primary, Franz, Heather B., additional, Sutter, Brad, additional, Arevalo, Ricardo D., additional, Coll, Patrice, additional, Eigenbrode, Jennifer L., additional, Glavin, Daniel P., additional, Jones, John J., additional, Leshin, Laurie A., additional, Mahaffy, Paul R., additional, McAdam, Amy C., additional, McKay, Christopher P., additional, Ming, Douglas W., additional, Morris, Richard V., additional, Navarro‐González, Rafael, additional, Niles, Paul B., additional, Pavlov, Alex, additional, Squyres, Steven W., additional, Stern, Jennifer C., additional, Steele, Andrew, additional, and Wray, James J., additional

Published
2014
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10. The MECA Wet Chemistry Laboratory on the 2007 Phoenix Mars Scout Lander

Author

Kounaves, Samuel P., primary, Hecht, Michael H., additional, West, Steven J., additional, Morookian, John‐Michael, additional, Young, Suzanne M. M., additional, Quinn, Richard, additional, Grunthaner, Paula, additional, Wen, Xiaowen, additional, Weilert, Mark, additional, Cable, Casey A., additional, Fisher, Anita, additional, Gospodinova, Kalina, additional, Kapit, Jason, additional, Stroble, Shannon, additional, Hsu, Po‐Chang, additional, Clark, Benton C., additional, Ming, Douglas W., additional, and Smith, Peter H., additional

Published
2009
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11. Search for magnetic minerals in Martian rocks: Overview of the Rock Abrasion Tool (RAT) magnet investigation on Spirit and Opportunity

Author

Goetz, Walter, primary, Leer, Kristoffer, additional, Gunnlaugsson, Haraldur P., additional, Bartlett, Paul, additional, Basso, Brandon, additional, Bell, Jim, additional, Bertelsen, Preben, additional, Binau, Charlotte S., additional, Chu, Phillip C., additional, Gorevan, S., additional, Hansen, Mikkel F., additional, Hviid, Stubbe F., additional, Kinch, Kjartan M., additional, Klingelhöfer, Göstar, additional, Kusack, Alastair, additional, Madsen, Morten B., additional, Ming, Douglas W., additional, Morris, Richard V., additional, Mumm, Erik, additional, Myrick, Tom, additional, Olsen, Malte, additional, Squyres, Steven W., additional, Wilson, Jack, additional, and Yen, Albert, additional

Published
2008
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12. Coordinated analyses of orbital and Spirit Rover data to characterize surface materials on the cratered plains of Gusev Crater, Mars

Author

Lichtenberg, Kimberly A., primary, Arvidson, Raymond E., additional, Poulet, Francois, additional, Morris, Richard V., additional, Knudson, Amy, additional, Bell, James F., additional, Bellucci, Giancarlo, additional, Bibring, Jean‐Pierre, additional, Farrand, William H., additional, Johnson, Jeffrey R., additional, Ming, Douglas W., additional, Pinet, Patrick C., additional, Rogers, A. Deanne, additional, and Squyres, Steven W., additional

Published
2007
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14. Rocks of the Columbia Hills

Author

Squyres, Steven W., primary, Arvidson, Raymond E., additional, Blaney, Diana L., additional, Clark, Benton C., additional, Crumpler, Larry, additional, Farrand, William H., additional, Gorevan, Stephen, additional, Herkenhoff, Kenneth E., additional, Hurowitz, Joel, additional, Kusack, Alastair, additional, McSween, Harry Y., additional, Ming, Douglas W., additional, Morris, Richard V., additional, Ruff, Steven W., additional, Wang, Alian, additional, and Yen, Albert, additional

Published
2006
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16. Thermal and Evolved Gas Analyzer: Part of the Mars Volatile and Climate Surveyor integrated payload

Author

Boynton, William V., primary, Bailey, Samuel H., additional, Hamara, David K., additional, Williams, Michael S., additional, Bode, Rolfe C., additional, Fitzgibbon, Michael R., additional, Ko, WenJeng, additional, Ward, Michael G., additional, Sridhar, K. R., additional, Blanchard, Jeff A., additional, Lorenz, Ralph D., additional, May, Randy D., additional, Paige, David A., additional, Pathare, Asmin V., additional, Kring, David A., additional, Leshin, Laurie A., additional, Ming, Douglas W., additional, Zent, Aaron P., additional, Golden, D. C., additional, Kerry, Kristopher E., additional, Lauer, H. Vern, additional, and Quinn, Richard C., additional

Published
2001
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17. Mineralogy, composition, and alteration of Mars Pathfinder rocks and soils: Evidence from multispectral, elemental, and magnetic data on terrestrial analogue, SNC meteorite, and Pathfinder samples

Author

Morris, Richard V., primary, Golden, D. C., additional, Bell, James F., additional, Shelfer, Tad D., additional, Scheinost, Andreas C., additional, Hinman, Nancy W., additional, Furniss, George, additional, Mertzman, Stanley A., additional, Bishop, Janice L., additional, Ming, Douglas W., additional, Allen, Carlton C., additional, and Britt, Daniel T., additional

Published
2000
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