Search Results - "Ehlmann, B. L"

Long-term drying of Mars by sequestration of ocean-scale volumes of water in the crust by Scheller, E L, Ehlmann, B L, Hu, Renyu, Adams, D J, Yung, Y L

“…Geological evidence shows that ancient Mars had large volumes of liquid water. Models of past hydrogen escape to space, calibrated with observations of the…”
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Elevation Anomalies of the Volcanic Floor Unit and Their Relationships to the Multiple Lakes of Jezero Crater, Mars by Annex, A. M., Ehlmann, B. L.

“…We reassessed several orbital topographic data sets for the Perseverance rover landing site at Jezero Crater, Mars to better understand its floor units…”
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Perseverance rover reveals an ancient delta-lake system and flood deposits at Jezero crater, Mars by Mangold, N, Gupta, S, Gasnault, O, Dromart, G, Tarnas, J D, Sholes, S F, Horgan, B, Quantin-Nataf, C, Brown, A J, Le Mouélic, S, Yingst, R A, Bell, J F, Beyssac, O, Bosak, T, Calef, 3rd, F, Ehlmann, B L, Farley, K A, Grotzinger, J P, Hickman-Lewis, K, Holm-Alwmark, S, Kah, L C, Martinez-Frias, J, McLennan, S M, Maurice, S, Nuñez, J I, Ollila, A M, Pilleri, P, Rice, Jr, J W, Rice, M, Simon, J I, Shuster, D L, Stack, K M, Sun, V Z, Treiman, A H, Weiss, B P, Wiens, R C, Williams, A J, Williams, N R, Williford, K H

“…Observations from orbital spacecraft have shown that Jezero crater on Mars contains a prominent fan-shaped body of sedimentary rock deposited at its western…”
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The Mars 2020 Perseverance Rover Mast Camera Zoom (Mastcam-Z) Multispectral, Stereoscopic Imaging Investigation by Bell, J. F., Maki, J. N., Mehall, G. L., Ravine, M. A., Caplinger, M. A., Bailey, Z. J., Brylow, S., Schaffner, J. A., Kinch, K. M., Madsen, M. B., Winhold, A., Hayes, A. G., Corlies, P., Tate, C., Barrington, M., Cisneros, E., Jensen, E., Paris, K., Crawford, K., Rojas, C., Mehall, L., Joseph, J., Proton, J. B., Cluff, N., Deen, R. G., Betts, B., Cloutis, E., Coates, A. J., Colaprete, A., Edgett, K. S., Ehlmann, B. L., Fagents, S., Grotzinger, J. P., Hardgrove, C., Herkenhoff, K. E., Horgan, B., Jaumann, R., Johnson, J. R., Lemmon, M., Paar, G., Caballo-Perucha, M., Gupta, S., Traxler, C., Preusker, F., Rice, M. S., Robinson, M. S., Schmitz, N., Sullivan, R., Wolff, M. J.

“…Mastcam-Z is a multispectral, stereoscopic imaging investigation on the Mars 2020 mission’s Perseverance rover. Mastcam-Z consists of a pair of focusable, 4:1…”
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Geologic setting of serpentine deposits on Mars by Ehlmann, B. L., Mustard, J. F., Murchie, S. L.

“…Serpentine, recently discovered on Mars using Mars Reconnaissance Orbiter data, is uncommon but found in three geologic settings: (1) in mélange terrains at…”
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Extensive water ice within Ceres’ aqueously altered regolith: Evidence from nuclear spectroscopy by Prettyman, T. H., Yamashita, N., Toplis, M. J., McSween, H. Y., Schörghofer, N., Marchi, S., Feldman, W. C., Castillo-Rogez, J., Forni, O., Lawrence, D. J., Ammannito, E., Ehlmann, B. L., Sizemore, H. G., Joy, S. P., Polanskey, C. A., Rayman, M. D., Raymond, C. A., Russell, C. T.

“…The surface elemental composition of dwarf planet Ceres constrains its regolith ice content, aqueous alteration processes, and interior evolution. Using…”
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An interval of high salinity in ancient Gale crater lake on Mars by Rapin, W., Ehlmann, B. L., Dromart, G., Schieber, J., Thomas, N. H., Fischer, W. W., Fox, V. K., Stein, N. T., Nachon, M., Clark, B. C., Kah, L. C., Thompson, L., Meyer, H. A., Gabriel, T. S. J., Hardgrove, C., Mangold, N., Rivera-Hernandez, F., Wiens, R. C., Vasavada, A. R.

“…Precipitated minerals, including salts, are primary tracers of atmospheric conditions and water chemistry in lake basins. Ongoing in situ exploration by the…”
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Hydrated silicate minerals on Mars observed by the Mars Reconnaissance Orbiter CRISM instrument by Mustard, John F, Murchie, S. L, Pelkey, S. M, Ehlmann, B. L, Milliken, R. E, Grant, J. A, Bibring, J.-P, Poulet, F, Bishop, J, Dobrea, E. Noe, Roach, L, Seelos, F, Arvidson, R. E, Wiseman, S, Green, R, Hash, C, Humm, D, Malaret, E, McGovern, J. A, Seelos, K, Clancy, T, Clark, R, Marais, D. D, Izenberg, N, Knudson, A, Langevin, Y, Martin, T, McGuire, P, Morris, R, Robinson, M, Roush, T, Smith, M, Swayze, G, Taylor, H, Titus, T, Wolff, M

“…Phyllosilicates, a class of hydrous mineral first definitively identified on Mars by the OMEGA (Observatoire pour la Mineralogie, L'Eau, les Glaces et…”
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Distribution of phyllosilicates on the surface of Ceres by Ammannito, E., DeSanctis, M. C., Ciarniello, M., Frigeri, A., Carrozzo, F. G., Combe, J.-Ph, Ehlmann, B. L., Marchi, S., McSween, H. Y., Raponi, A., Toplis, M. J., Tosi, F., Castillo-Rogez, J. C., Capoccioni, F., Capria, M. T., Fonte, S., Giardino, M., Jaumann, R., Longobardo, A., Joy, S. P., Magni, G., McCord, T. B., McFadden, L. A., Palomba, E., Pieters, C. M., Polanskey, C. A., Rayman, M. D., Raymond, C. A., Schenk, P. M., Zambon, F., Russell, C. T.

“…The dwarf planet Ceres is known to host phyllosilicate minerals at its surface, but their distribution and origin have not previously been determined. We used…”
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Silica deposits in the Nili Patera caldera on the Syrtis Major volcanic complex on Mars by Skok, J. R, Mustard, J. F, Ehlmann, B. L, Milliken, R. E, Murchie, S. L

“…The martian surface features abundant volcanoes and evidence for past liquid water. Extant or relict martian volcanic hydrothermal systems have therefore been…”
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Mars Science Laboratory Observations of Chloride Salts in Gale Crater, Mars by Thomas, N. H., Ehlmann, B. L., Meslin, P.‐Y., Rapin, W., Anderson, D. E., Rivera‐Hernández, F., Forni, O., Schröder, S., Cousin, A., Mangold, N., Gellert, R., Gasnault, O., Wiens, R. C.

“…The Mars Science Laboratory Curiosity rover is traversing a sequence of stratified sedimentary rocks in Gale crater that contain varied eolian, fluviodeltaic,…”
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Igneous mineralogy at Bradbury Rise: The first ChemCam campaign at Gale crater by Sautter, V., Fabre, C., Forni, O., Toplis, M. J., Cousin, A., Ollila, A. M., Meslin, P. Y., Maurice, S., Wiens, R. C., Baratoux, D., Mangold, N., Le Mouélic, S., Gasnault, O., Berger, G., Lasue, J., Anderson, R. A., Lewin, E., Schmidt, M., Dyar, D., Ehlmann, B. L., Bridges, J., Clark, B., Pinet, P.

“…Textural and compositional analyses using Chemistry Camera (ChemCam) remote microimager and laser‐induced breakdown spectroscopy (LIBS) have been performed on…”
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Composition, Morphology, and Stratigraphy of Noachian Crust around the Isidis basin by Mustard, J. F., Ehlmann, B. L., Murchie, S. L., Poulet, F., Mangold, N., Head, J. W., Bibring, J.-P., Roach, L. H.

“…Definitive exposures of pristine, ancient crust on Mars are rare, and the finding that much of the ancient Noachian terrain on Mars exhibits evidence of…”
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Compositional stratigraphy of clay-bearing layered deposits at Mawrth Vallis, Mars by Wray, J. J., Ehlmann, B. L., Squyres, S. W., Mustard, J. F., Kirk, R. L.

“…Phyllosilicates have previously been detected in layered outcrops in and around the Martian outflow channel Mawrth Vallis. CRISM spectra of these outcrops…”
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Geochemical diversity in first rocks examined by the Curiosity Rover in Gale Crater: Evidence for and significance of an alkali and volatile-rich igneous source by Schmidt, M. E., Campbell, J. L., Gellert, R., Perrett, G. M., Treiman, A. H., Blaney, D. L., Olilla, A., Calef III, F. J., Edgar, L., Elliott, B. E., Grotzinger, J., Hurowitz, J., King, P. L., Minitti, M. E., Sautter, V., Stack, K., Berger, J. A., Bridges, J. C., Ehlmann, B. L., Forni, O., Leshin, L. A., Lewis, K. W., McLennan, S. M., Ming, D. W., Newsom, H., Pradler, I., Squyres, S. W., Stolper, E. M., Thompson, L., VanBommel, S., Wiens, R. C.

“…The first four rocks examined by the Mars Science Laboratory Alpha Particle X‐ray Spectrometer indicate that Curiosity landed in a lithologically diverse…”
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Columbus crater and other possible groundwater-fed paleolakes of Terra Sirenum, Mars by Wray, J. J., Milliken, R. E., Dundas, C. M., Swayze, G. A., Andrews-Hanna, J. C., Baldridge, A. M., Chojnacki, M., Bishop, J. L., Ehlmann, B. L., Murchie, S. L., Clark, R. N., Seelos, F. P., Tornabene, L. L., Squyres, S. W.

“…Columbus crater in the Terra Sirenum region of the Martian southern highlands contains light‐toned layered deposits with interbedded sulfate and phyllosilicate…”
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The stratigraphy and evolution of lower Mount Sharp from spectral, morphological, and thermophysical orbital data sets by Fraeman, A. A., Ehlmann, B. L., Arvidson, R. E., Edwards, C. S., Grotzinger, J. P., Milliken, R. E., Quinn, D. P., Rice, M. S.

“…We have developed a refined geologic map and stratigraphy for lower Mount Sharp using coordinated analyses of new spectral, thermophysical, and morphologic…”
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The Global Context Camera (CTX) Mosaic of Mars: A Product of Information‐Preserving Image Data Processing by Dickson, J. L., Ehlmann, B. L., Kerber, L., Fassett, C. I.

“…The Mars Reconnaissance Orbiter and its Context Camera (CTX) have acquired more than 100,000 separate panchromatic images that capture nearly the entire…”
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A PCA‐Based Framework for Determining Remotely Sensed Geological Surface Orientations and Their Statistical Quality by Quinn, D. P., Ehlmann, B. L.

“…The orientations of planar rock layers are fundamental to our understanding of structural geology and stratigraphy. Remote sensing platforms including…”
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A probabilistic approach to remote compositional analysis of planetary surfaces by Lapotre, M. G. A., Ehlmann, B. L., Minson, S. E.

“…Reflected light from planetary surfaces provides information, including mineral/ice compositions and grain sizes, by study of albedo and absorption features as…”
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