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Browsing by Author "Farrand, W. H."

Browsing by Author "Farrand, W. H."

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  • Ancient Impact and Aqueous Processes at Endeavour Crater, Mars 
    Squyres, S. W.; Arvidson, R. E.; Bell, J. F.; Calef, F.; Clark, B. C.; Cohen, B. A.; Crumpler, L. A.; De Souza, P. A.; Farrand, W. H.; Gellert, R.; Grant, John A.; Herkenhoff, K. E.; Hurowitz, J. A.; Johnson, J. R.; Jolliff, B. L.; Knoll, A. H.; Li, R.; McLennan, S. M.; Ming, D. W.; Mittlefehldt, D. W.; Parker, T. J.; Paulsen, G.; Rice, M. S.; Ruff, S. W.; Schröder, C.; Yen, A. S.; Zacny, K. (2012)
    The rover Opportunity has investigated the rim of Endeavour Crater, a large ancient impact crater on Mars. Basaltic breccias produced by the impact form the rim deposits, with stratigraphy similar to that observed at ...
  • Context of Ancient Aqueous Environments on Mars from In Situ Geologic Mapping at Endeavour Crater 
    Crumpler, L. S.; Arvidson, R. E.; Bell, J.; Clark, B. C.; Cohen, B. A.; Farrand, W. H.; Gellert, R.; Golombek, M.; Grant, John A.; Guinness, E.; Herkenhoff, K. E. (2015)
  • Exploration of Victoria Crater by the Mars Rover Opportunity 
    Squyres, Steven W.; Knoll, A. H.; Arvidson, Raymond E.; Ashley, J. W.; Bell, James F., III; Calvin, W. M.; Christensen, Philip R.; Clark, Benton C.; Cohen, B. A.; de Souza, P. A., Jr.; Edgar, L.; Farrand, W. H.; Fleischer, I.; Gellert, R.; Golombek, M. P.; Grant, John A.; Grotzinger, J.; Hayes, A.; Herkenhoff, Kenneth E.; Johnson, J. R.; Jolliff, B.; Klingelhöfer, Göstar; Knudson, A.; Li, R.; McCoy, Timothy J.; McLennan, S. M.; Ming, D. W.; Mittlefehldt, D. W.; Morris, R. V.; Rice, J. W., Jr.; Schroder, C.; Sullivan, R. J.; Yen, A.; Yingst, R. A. (2009)
    The Mars rover Opportunity has explored Victoria crater, a ~750-meter eroded impact crater formed in sulfate-rich sedimentary rocks. Impact-related stratigraphy is preserved in the crater walls, and meteoritic debris is ...
  • Hydrothermal origin of halogens at Home Plate, Gusev Crater 
    Schmidt, M. E.; Ruff, S. W.; McCoy, Timothy J.; Farrand, W. H.; Johnson, J. R.; Gellert, R.; Ming, D. W.; Morris, R. V.; Cabrol, Nathalie A.; Lewis, K. W.; Schroeder, C. (2008)
    In the Inner Basin of the Columbia Hills, Gusev Crater is Home Plate, an 80 m platform of layered clastic rocks of the Barnhill class with microscopic and macroscopic textures, including a bomb sag, suggestive of a ...
  • Meteorites on Mars observed with the Mars Exploration Rovers 
    Schroeder, C.; Rodionov, D. S.; McCoy, Timothy J.; Jolliff, B. L.; Gellert, R.; Nittler, L. R.; Farrand, W. H.; Johnson, J. R.; Ruff, S. W.; Ashley, J. W.; Mittlefehldt, D. W.; Herkenhoff, Kenneth E.; Fleischer, I.; Haldemann, A. F. C.; Klingelhöfer, Göstar; Ming, D. W.; Morris, R. V.; de Souza, P. A.; Squyres, Steven W.; Weitz, Catherine M.; Yen, A. S.; Zipfel, J.; Economou, T. (2008)
    Reduced weathering rates due to the lack of liquid water and significantly greater typical surface ages should result in a higher density of meteorites on the surface of Mars compared to Earth. Several meteorites were ...
  • Nature and Origin of the Hematite-Bearing Plains of Terra Meridiani Based on Analyses of Orbital and Mars Exploration Rover Data Sets 
    Arvidson, R. E.; Poulet, F.; Morris, R. V.; Bibring, J. P.; Bell, J. F.; Squyres, S. W.; Christensen, P. R.; Bellucci, G.; Gondet, B.; Ehlmann, B. L.; Farrand, W. H.; Fergason, R. L.; Golombek, M.; Griffes, J. L.; Grotzinger, J.; Guinness, E. A.; Herkenhoff, K. E.; Johnson, J. R.; Klingelhofer, G.; Langevin, Y.; Ming, D.; Seelos, K.; Sullivan, R. J.; Ward, J. G.; Wiseman, S. M.; Wolff, M. (2006)
  • Pancam multispectral imaging results from the Spirit Rover at Gusev crater 
    Bell, James F., III; Squyres, Steven W.; Arvidson, Raymond E.; Arneson, H. M.; Bass, D.; Blaney, Diana L.; Cabrol, Nathalie A.; Calvin, W. M.; Farmer, J.; Farrand, W. H.; Goetz, W.; Golombek, M. P.; Grant, John A.; Greeley, Ronald; Guinness, E.; Hayes, A. G.; Hubbard, M. Y. H.; Herkenhoff, Kenneth E.; Johnson, M. J.; Johnson, J. R.; Joseph, J.; Kinch, K. M.; Lemmon, M. T.; Li, R.; Madsen, M. B.; Maki, J. N.; Malin, M.; McCartney, E.; McLennan, S.; McSween, Harry Y.; Ming, D. W.; Moersch, J. E.; Morris, R. V.; Dobrea, E. Z. N.; Parker, T. J.; Proton, J.; Rice, J. W.; Seelos, F.; Soderblom, J.; Soderblom, L. A.; Sohl-Dickstein, J. N.; Sullivan, R. J.; Wolff, M. J.; Wang, A. (2004)
  • Pyroclastic activity at Home Plate in Gusev Crater, Mars 
    Squyres, Steven W.; Aharonson, O.; Clark, Benton C.; Cohen, B. A.; Crumpler, Larry S.; de Souza, P. A.; Farrand, W. H.; Gellert, R.; Grant, John A.; Grotzinger, J. P.; Haldemann, A. F.; Johnson, J. R.; Klingelhöfer, Göstar; Lewis, K. W.; Li, R.; McCoy, Timothy J.; Mcewen, A. S.; McSween, Harry Y.; Ming, D. W.; Moore, J. M.; Morris, R. V.; Parker, T. J.; Rice, J. W.,Jr.; Ruff, S.; Schmidt, M.; Schroder, C.; Soderblom, L. A.; Yen, A. (2007)
    Home Plate is a layered plateau in Gusev crater on Mars. It is composed of clastic rocks of moderately altered alkali basalt composition, enriched in some highly volatile elements. A coarsegrained lower unit lies under a ...
  • Results from the first geologic traverse on the topographic rim of a complex impact crater, Endeavour Crater, Mars 
    Crumpler, L. S.; Arvidson, R. E.; Mittlefehldt, D. W.; Grant, J. A.; Farrand, W. H. (2020)
    A geologic traverse along the rim of the 22-km-diameter Endeavour Crater by the Opportunity Mars rover has provided the first field geologic observations of outcrop-scale structure and stratigraphy at a complex impact ...
  • Spectral, mineralogical, and geochemical variations across Home Plate, Gusev Crater, Mars indicate high and low temperature alteration 
    Schmidt, M. E.; Farrand, W. H.; Johnson, J. R.; Schröder, C.; Hurowitz, J. A.; McCoy, Timothy J.; Ruff, S. W.; Arvidson, Raymond E.; Des Marais, D. J.; Lewis, K. W.; Ming, D. W.; Squyres, Steven W.; de, Souza,Jr (2009)
    Over the last ~ 3 years in Gusev Crater, Mars, the Spirit rover observed coherent variations in color, mineralogy, and geochemistry across Home Plate, an ~ 80 m-diameter outcrop of basaltic tephra. Observations of Home ...
  • Spirit Mars Rover Mission to the Columbia Hills, Gusev Crater: Mission overview and selected results from the Cumberland Ridge to Home Plate 
    Arvidson, Raymond E.; Ruff, S. W.; Morris, R. V.; Ming, D. W.; Crumpler, Larry S.; Yen, A. S.; Squyres, Steven W.; Sullivan, R. J.; Bell, James F., III; Cabrol, Nathalie A.; Clark, Benton C.; Farrand, W. H.; Gellert, R.; Greenberger, R.; Grant, John A.; Guiness, E. A.; Herkenhoff, Kenneth E.; Hurowitz, J. A.; Johnson, J. R.; Klingelhöfer, Göstar; Lewis, K. W.; Li, R.; McCoy, Timothy J.; Moersch, J.; McSween, Harry Y.; Murchie, Scott L.; Schmidt, M.; Schroder, C.; Wang, A.; Wiseman, S.; Madsen, M. B.; Goetz, W.; McLennan, S. M. (2008)
  • Spirit Mars Rover Mission: Overview and selected results from the northern Home Plate Winter Haven to the side of Scamander crater 
    Arvidson, Raymond E.; Bell, James F., III; Bellutta, P.; Cabrol, Nathalie A.; Catalano, J. G.; Cohen, J.; Crumpler, Larry S.; Des Marais, D. J.; Estlin, T. A.; Farrand, W. H.; Grant, John A.; Gellert, R. (2010)

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