L Knauth

L Knauth

Emeritus Professor, School Of Earth and Space Exploration
Emeritus Professor, Emeritus College
Emeritus Professor, SESE Emerti
  • knauth@asu.edu
  • 480-965-2867
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  • PS F546 TEMPE, AZ 85287-1404
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Biography Research Teaching Public Work
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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
  • Westerhoff,Paul*, Chan,Candace Kay, Chan,Candace Kay, Chan,Candace Kay, Fox,Peter, Halden,Rolf, Knauth,L Paul, Lee,Taewoo, Lee,Taewoo, Lee,Taewoo, Mignolet,Marc Paul, Parrish,Kristen, Peet,Matthew M, Ruddell,Benjamin Lyle, Wang,Zhihua. SRPASU Cooperative Agreement. SRP-SALT RIVER PROJECT(7/1/2011 - 8/31/2016).
  • Knauth,L Paul*. Search for Earliest Metazoans. NSF-GEO-EAR(3/1/2009 - 2/28/2011).
  • Knauth,L Paul*. Climatic Temperature History of the Earth and Its Possible Effects on Biological Evolution. NASA-GODDARD SPACE FLIGHT CTR(6/16/2008 - 6/15/2010).
  • Knauth,L Paul*. Isotopic Paleotemperatures at Key Times in the Early History of Life. NASA-GODDARD SPACE FLIGHT CTR(5/1/2004 - 4/30/2009).
  • Knauth,L Paul*. EXPLORING THE RECORD OF EARLY LIFE ON LAND WITH APPLICATIONS TO THE SEARCH FOR PAST LIFE ON MARS. NASA-GODDARD SPACE FLIGHT CTR(6/1/2003 - 5/31/2005).
  • Knauth,L Paul*. ENVIRONMENTS OF EARLY EVOLUTION AND THE SEARCH FOR AN EXTRATERRESTRIAL FOSSIL RECORD. NASA-GODDARD SPACE FLIGHT CTR(6/1/2000 - 5/31/2005).
  • Farmer,Jack*, Blankenship,Robert E, Buseck,P R, Buseck,P R, Christensen,Philip R, Cronin,John Read, Dowling,Thomas Edmunds, Dowling,Thomas Edmunds, Elser,James Joseph, Elser,James Joseph, Fagan,William Fredric, Garcia-Pichel,Ferran, Greeley,Ronald, Holloway,John Requa, Knauth,L Paul, Leshin,Laurie Ann, Mccartney,Martha Rogers, Minckley,W L, Oday,Peggy Anne, Pizzarello,Sandra, Sharp,Thomas, Tang,Carol Marie. EXPLORING THE LIVING UNIVERSE: ORIGIN, EVOLUTION & DISTRIBUTION OF LIFE IN THE SOLAR SYSTEM. NASA-AMES RESEARCH CTR(7/1/1998 - 12/31/2004).
  • Knauth,L Paul*. FOSSIL RECORD OF LIFE IN THE PRECAMBRIAN. NASA-GODDARD SPACE FLIGHT CTR(6/1/1997 - 5/31/2000).
  • Knauth,L Paul*. CLIMACTIC TEMPERATURE OF CHERTS. NSF-GEO(1/1/1995 - 7/31/1997).
  • Knauth,L Paul*. GEOCHEMISTRY & PALENTOLOGY OF PRECABRIAN EXPOSURE SURFACES. NSF-GEO(4/16/1991 - 6/30/1994).
  • Knauth,L Paul*. THE ORIGIN AND PETROLOGIC OCCURANCE OF SILT-SIZE QUARTZ. UNIV OF OKLAHOMA-HSC(1/1/1991 - 12/31/1991).
  • Knauth,L Paul*. ISOTOPIC STUDIES OF PRECAMBRIAN SILICIFIED EROSION SURFACES. NSF-GEO(5/10/1989 - 12/31/1991).
  • Knauth,L Paul*. LIGHT ELEMENT ISOTOPIC GEOCHEMICAL ANALYSES. STONE & WEBSTER ENGINEERING CO(9/30/1982 - 3/31/1988).
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)
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