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L Knauth

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Emeritus Professor
Faculty,
Emeritus Professor
Faculty,
Publications: 
  • Knauth, L.P. and M.J. Kennedy. The Late Precambrian Greening of the Earth. Nature (2009).
  • Burt, D.M., Knauth, L.P., Wohletz, K.H., and Sheridan, M.F. Surge deposit misidentification at Spor Mountain, Utah and elsewhere: A cautionary message for Mars. Journal of Volcanology and Geothermal Research. 177, 755-759 (2008).
  • Garvie, L., Knauth, L.P., Bungartz, F., Klonowski, S., Nash III, T., . Life in extreme environments: survival strategy of the endolithic desert lichen Verrucaria rubrocincta. Naturwissenshaften (2008).
  • Ohmoto, H., Runnegar, B., Kump, L.R., Fogel, M.L., Kamber B., Anbar, A.D., Knauth, L.P., Lowe, D.R., Sumner, D.Y., Watanabe, Y. Biosignatures in Ancient Rocks: A Summary of Discussions at a Field Workshop on Biosignatures in Ancient Rocks. Astrobiology (2008).
  • D Burt, K Wohletz, L Knauth. Mars and Mine Dumps. EOS, Transactions, American Geophysical Union (2006).
  • L Knauth. Signature Required. Nature (News and Views) (2006).
  • L Knauth. Temperature and salinity history of the Precambrian ocean: Implications for hte course of microbial evolution. Paleogeography, Paleoclimatology, Paleoecology (2005).
  • L Knauth, Donald Burt, K Wohletz. Impact origin of sediments at the Opportunity landing site on Mars. Nature (2005).
  • Knauth, L Paul. Siliceous Sediments. Encyclopedia of Sediments and sedimentary rocks (2003).
  • D Burt, L Knauth. Electrically conducting, Ca-rich brines, rather than water, expected in the martian subsurface. Journal of Geophysical Research (2003).
  • L Knauth, D Lowe. Archean climatic temperature inferred from oxygen isotope geochemistry of cherts in the 3.5 Ga Swaziland Supergroup, South Africa. Geological Society of America Bulletin (2003).
  • L Knauth, M Brilli, S Klonowski. Isotope geochemistry of caliche on basalt. Geochimica et Cosmochimica Acta (2003).
  • . Siliceous Sediments. Encyclopedia of Sediments and Sedimentary Rocks (2003).
  • L Knauth, Donald Burt. Eutectic brines on Mars: Origin and possible relation to young seepage features. Icarus (2002).
  • R Kenny, L Knauth. Stable isotope variations in the Neoproterozoic Beck Spring and Mesoproterozoic Mescal paleokarst: Implications for life on land in the Precambrian. Bulletin Geologic Society of America (2001).
  • L Knauth, S Klonowski, D Burt. Ideas about the surface runoff features on Mars. Science (2000).
Research Activity: 
Presentations: 
  • Knauth, L.P. The Late Precambrian Greening of the Earth. Colloquium presentation Penn State University (Nov 2008).
  • Burt, D.M., Knauth, L.P., Wohletz, K.H. The late heavy bombardment: Possible influence on Mars. Lunar and Lunar and Planetary Institute Workshop on Early solar System Impact Bombardment (Nov 2008).
  • Knauth, L.P. and Kennedy, M. Greening of the Late Precambrian Landscape. Annual meeting Geological Society of America, Houston (Sep 2008).
  • Burt, D.M., Knauth, L.P., Wohletz, K.H. The late heavy bombardment of Mars. Annual meeting Geological Society of America, Houston (Sep 2008).
  • Knauth, L.P. Carbon isotope biosignatures in rocks on early Earth and Mars. Astrobiology Science Conference 2008 (Apr 2008).
  • Knauth, L.P. and M.J. Kennedy. The Late Precambrian Greening of the Earth. Astrobiology Science Conference 2008 (Apr 2008).
  • Burt, D.M., Knauth, L.P., Wohletz, K.H. Martian gullies and salty sidewalks. 39th Lunar and Planetary Science Conference (Mar 2008).
  • Knauth L.P. Life on land in the Precambrian. Colloquium presentation University of Montana (Mar 2008).
  • Knauth, L.P. Impact origin of Sediments at the Opportunity landing site on Mars. Seminar (Mar 2008).
  • Knauth, L. The Archean Environment. NASA Astrobiology Institute Field Workshop Biosignatures in Ancient Rocks (Sep 2007).
  • Ohmoto, H, Watanabe, Y, Allwood, A, Burch, I, Yamaguchi, K, Johnson, I, Knauth, L. Discovery of probable >3.43 Ga Paleolaterites in the Pilbara Craton, Western Australia. Fall mtg. Amer. Geophys. Union (Dec 2006).
  • Knauth, L, Awramik, S, Buchheim, H. Isotope geochemistry of 2.7 Ga chert and carbonate, Tumbiana Formation, Australia: Implications for late Archean climatic temperatures and early evolution of life. Annual mtg. Geol. Soc. Amer (Oct 2006).
  • Burt, D, Knauth, L, Wohletz, K. Impact dispersal and weathering of sulfides on early Mars: A source of acid sulfates and a possible habitat for microbes. Annual mtg Geol. Soc. Amer (Oct 2006).
  • Burt, D, Knauth, L, Wohletz, K. Impact excavation of sulfides that then weather into sulfates: An astrobiology-friendly explanation for acid sulfate formation on Mars. Martian Sulfates as Recorders of Atmospheric-Fluid-Rock Interactions, Lunar and Planetary Institute (Oct 2006).
  • Burt, Donald, Knauth, L, Wohletz, K, Sheridan, M. History of surge deposit misidentification at Spor Mountain, Utah and elsewhere: A cautionary message for Mars. Volcanic Flows and Falls: A Conference to Honor Professor Michael F. Sheridan (May 2006).
  • Knauth, L. An alternative view of C istoope variations in Neoproterozoic carbonates. Penn State Special Seminar (Apr 2006).
  • Knauth, L. Impact surge origin of sediments at the Oportunity landing site on mars--with implications for Astrobiology. Penn State Astrobiology Colloquium (Apr 2006).
  • Knauth, L, Burt, D, Wohletz, K. Impact surge as the simplest of the proposed hypotheses for the origin of sediments at the Opportunity Landing Site on Mars. Lunar and Planetary Science Conference XXXVII (Mar 2006).
  • Burt, D, Knauth, L, Wohletz, K. Origin of layered rocks, salts, and spherules at the opportunity landing site on Mars: No flowing or standing water evident or required. Annual Meeting Geological Society of America (Oct 2005).
  • Knauth, L. An alternative view of C isotope variations in neoproterozoic carbonates. Annual Meeting Geological Society of America (Oct 2005).
  • Knauth, L. An alternative view of the course of evolution with implications fro life elsewhere in the universe. 8th NASA Exobiology Principal Investigator Symposium, NASA Ames (Aug 2005).
  • Knauth, L. Fire Opal Oceans of the Archean. NASA Astrobiology Institute Field Conference, "Life int he Pilbara and the search for life on Mars" (Jun 2005).
  • Burt, D, Knauth, L, Wohletz, K. Origin of layered rocks, salts and spherules at the opportunity landing site on mars: No flowing or standing water evident or required. Lunar and Planetary Science Conference XXXVI annual meeting (Mar 2005).
  • McFadden, K, Knauth, L. Geochemistry at the Kaibab-Moenkopi contact and its relationship to the Permian-Triassic boundary for Northern Arizona. Geological Society of America, Annual National Meeting (Nov 2004).
  • Burt, D, Knauth, L. Brine splat interpretation of features seen at the Opportunity landing site on Mars. Geologic Society of America, Annual national meeting (Nov 2004).
  • Knauth, L, Burt, D. The "Brine Splat" hypthesis for features observed at the Opportunity Landing Stie. Lunar and Planetary Science Institute Conference on Early Mars (Oct 2004).
Service: 
  • SESE outreach raft trip through Grand Canyon, Organizer and leader (2009 - Present)
  • Penn State Astrobiology Research Center, Associate Member (2007 - Present)
  • Public Outreach Field Trips, Organizer and leader (2006 - Present)
  • Lincoln Center for Applied Ethics, Member, Affiliates Council (2003 - Present)
  • Geology Department Public Field Trips Outreach Program, Leader (1989 - Present)
  • University Committee on Academic Freedom and Tenure, Member (2010 - 2012)
  • Two SESE Public Raft trip through Grand Canyon, Organizer and leader (2008 - 2008)
  • Two SESE Public Raft trip through Grand Canyon, Organizer and leader (2007 - 2007)
  • CLAS Dean's Faculty Advisory Council, Chair (2006 - 2007)
  • CLAS Dean's Advisory Council, Elected member (2004 - 2006)
  • Search Committee for Sedimentology Position, Member (2005 - 2005)
  • Faculty mentor program, mentor (2004)
  • Lincoln Center for Applied Ethics, Member of Affiliates Council (2004)
  • Canada Foundation for Innovation, Panel member (1 of 5) (2003)
  • Center for Study of Evolution and the Origin of Life; UCLA, Invited Speaker (2003)
  • Co-Curricular Affairs, Field Trip leader (2003)
  • Lincoln Center for Applied Ethics--, Member of Affiliates Council-- (2003)
  • Scottsdale Community College, Invited Speaker (2003)
  • University of Illinois Champaign-Urbana; Department of Geology, Seminar Speaker (2003)
  • Bulletin of Geologic Society of America, Associate Editor (1994 - 2001)