Browsing FAS Scholarly Articles by Keyword "mineralogy"

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    • Clay Mineralogy, Organic Carbon Burial, and Redox Evolution in Proterozoic Oceans 

      Tosca, Nicholas J.; Johnston, David T; Mushegian, Alexandra Arcadievna; Rothman, Daniel H.; Summons, Roger E.; Knoll, Andrew Herbert (Elsevier, 2010)
      Clay minerals formed through chemical weathering have long been implicated in the burial of organic matter (OM), but because diagenesis and metamorphism commonly obscure the signature of weathering-derived clays in Precambrian ...

    • High concentrations of manganese and sulfur in deposits on Murray Ridge, Endeavour Crater, Mars 

      Arvidson, Raymond E.; Squyres, Steven W.; Morris, Richard V.; Knoll, Andrew Herbert; Gellert, Ralf; Clark, Benton C.; Catalano, Jeffrey G.; Jolliff, Brad L.; McLennan, Scott M.; Herkenhoff, Kenneth E.; VanBommel, Scott; Mittlefehldt, David W.; Grotzinger, John P.; Guinness, Edward A.; Johnson, Jeffrey R.; Bell, James F.; Farrand, William H.; Stein, Nathan; Fox, Valerie K.; Golombek, Matthew P.; Hinkle, Margaret A.G.; Calvin, Wendy M.; de Souza, Paulo A. (Mineralogical Society of America, 2016)
      Mars Reconnaissance Orbiter HiRISE images and Opportunity rover observations of the ~22 km wide Noachian age Endeavour Crater on Mars show that the rim and surrounding terrains were densely fractured during the impact ...

    • Sedimentary talc in Neoproterozoic carbonate successions 

      Tosca, Nicholas; Macdonald, Francis Alexander; Strauss, Justin Vincent; Johnston, David T; Knoll, Andrew Herbert (Elsevier BV, 2011)
      Mineralogical, petrographic and sedimentological observations document early diagenetic talc in carbonate-dominated successions deposited on two early Neoproterozoic (~ 800–700 million years old) platform margins. In the ...