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Browsing LPI Contributions by Author "Achilles, C. N."

Browsing LPI Contributions by Author "Achilles, C. N."

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  • Evidence for Multiple Diagenetic Episodes in Ancient Fluvial‐Lacustrine Sedimentary Rocks in Gale Crater, Mars 
    Achilles, C. N.; Rampe, Elizabeth; Downs, R. T.; Bristow, Thomas F.; Ming, D. W. (Douglas W.); Morris, Richard V.; Treiman, Allan H.; https://orcid.org/0000-0002-8073-2839 (American Geophysical Union, 2020-06-27)
    We present the mineralogy of four rocks determined by the CheMin X‐ray diffraction instrument onboard the rover. The results exhibit evidence of multiple diagenetic events, including aqueous alteration by warm groundwaters ...
  • Formation of Tridymite and Evidence for a Hydrothermal History at Gale Crater, Mars 
    Yen, A. S.; Morris, Richard V.; Ming, D. W. (Douglas W.); Schwenzer, Susanne Petra; Sutter, B.; Vaniman, David; Treiman, Allan H.; Gellert, R.; Achilles, C. N.; Berger, J. A.; Blake, D. F.; Boyd, N. I.; Bristow, Thomas F.; Chipera, S. J.; Clark, Benton C.; Craig, Patricia I.; Downs, R. T.; Franz, H. B.; Gabriel, T.; McAdam, A. C.; Morrison, S. M.; O'Connell-Cooper, C. D.; Rampe, Elizabeth; Schmidt, Mariek; Thompson, Lucy; VanBommel, Scott J.; https://orcid.org/0000-0001-7661-2626; https://orcid.org/0000-0002-8073-2839; https://orcid.org/0000-0002-9608-0759; https://orcid.org/0000-0003-4080-4997 (American Geophysical Union, 2021-03-10)
    Using data from Curiosity's instrument suite, we show that the tridymite‐bearing rocks exhibit similar chemical patterns with silicon‐rich alteration zones which crosscut the layered sediments. We infer that the tridymite ...
  • Hydrothermal precipitation of sanidine (adularia) having full Al,Si structural disorder and specular hematite at Maunakea Volcano (Hawai'i) and at Gale Crater (Mars) 
    Morris, Richard V.; Rampe, Elizabeth; Vaniman, David; Christoffersen, Roy; Yen, A. S.; Morrison, S. M.; Ming, D. W. (Douglas W.); Achilles, C. N.; Fraeman, A. A.; Le, L.; Tu, V. M.; Ott, J. P.; Treiman, Allan H.; Hogancamp, J. V.; Graff, T. G.; Adams, M.; Hamilton, J. C.; Mertzman, S. A.; Bristow, Thomas F.; Blake, D. F.; Castle, Nicholas; Chipera, S. J.; Craig, Patricia I.; Marais, D. J. Des; Downs, G.; Downs, R. T.; Morookian, J. M.; Thorpe, M.; https://orcid.org/0000-0001-7661-2626; https://orcid.org/0000-0002-8073-2839; https://orcid.org/0000-0003-4080-4997 (2020-06-19)
    A layer of weathering‐resistant material is located within the walls of an erosional gully of the Pu'u Poliahu cinder cone in the summit region of Maunakea volcano (Hawai'i). The volcanic cone, initially composed of unaltered ...
  • Mineralogy of an active eolian sediment from the Namib dune, Gale crater, Mars 
    Achilles, C. N.; Treiman, Allan H.; https://orcid.org/0000-0002-8073-2839; Craig, Patricia I.; https://orcid.org/0000-0003-4080-4997 (American Geophysical Union, 2017-11-30)
    Curiosity's recent traverse through an active basaltic eolian deposit, informally named the Bagnold Dune Field (Figure 1), provided the opportunity for a multi‐instrument investigation of the geomorphology, chemistry, and ...
  • Mineralogy of Vera Rubin Ridge From the Mars Science Laboratory CheMin Instrument 
    Rampe, Elizabeth; Bristow, Thomas F.; Morris, Richard V.; Morrison, S. M.; Achilles, C. N.; Ming, D. W. (Douglas W.); Vaniman, David; Blake, D. F.; Tu, V. M.; Chipera, S. J.; Yen, A. S.; Peretyazhko, T. S.; Downs, R. T.; Treiman, Allan H.; Grotzinger, John P.; Castle, Nicholas; Craig, Patricia I.; Marais, D. J. Des; Thorpe, M.; Fraeman, A. A.; Siebach, K. L.; Gellert, R.; Lafuente, B.; McAdam, A. C.; Meslin, P.-Y.; Sutter, B.; Salvatore, M. R.; https://orcid.org/0000-0001-7661-2626; https://orcid.org/0000-0002-8073-2839; https://orcid.org/0000-0003-4080-4997 (American Geophysical Union, 2020-06-24)
    The Mars Science Laboratory Curiosity rover performed an extensive campaign on Vera Rubin Ridge (VRR) to determine the geologic history of the ridge. Mineralogical data collected by the CheMin instrument of four rock samples ...

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