L Knauth

Emeritus Professor,

School of Earth and Space Exploration

Other ASU affiliations

Emeritus College

PS F546 TEMPE, AZ 85287-1404
‌
‌

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)