VITAE
L. Paul Knauth
02/28/2010
(480) 965-2867 (office) |
Department of |
Knauth@asu.edu |
EDUCATION:
B.A. 1966 University of Chicago
Ph.D. 1973
S. Epstein, Advisor
POSITIONS HELD
2006-present Professor, School of Earth and Space Exploration,
Arizona State University
1982 - 2006 Professor, Department of Geology, Arizona State
University
1982-1986 Chairman, Department of Geology, Arizona State University
1981-1994 Director, Arizona State University Summer Field Camp
1979-82 Associate Professor, Department of Geology, Arizona State University
1977-79 Associate Professor, Department of Geology, Louisiana State University
1972-77 Assistant Professor, Department of Geology, Louisiana State University
COURSES TAUGHT
(Underlined courses taught regularly or more than once)
Arizona State University (1979 - present)
Introduction to Geology
General Geology
Seminar in Isotope Geochemistry of Sedimentary Rocks
Physical Geology
Isotope
Geochemistry Advanced
Geomorphology seminar
Sedimentology Geology
Colloquium
Environmental Aqueous Geochemistry seminar
Advanced Field Geology
Summer Field Camp Seminar in Stable Isotope Geochemistry
Historical Geology
Geology of the Grand Canyon Advanced
Sedimentology
Co-Founder/Co-Director, ASU Summer Field Camp, 1980-1996
Astrobiology; Seminar in Astrobiology
Louisiana State University (1972-1979)
Introduction Physical Geology
Introduction Historical Geology
Mineralogy I
Mineralogy II
Physical Chemistry of Petrologic Systems
Isotope Geochemistry
Seminars in Isotope Geochemistry, Cherts, and Precambrian Sedimentation
THESIS AND DISSERTATIONS
DIRECTED
Marshall Haimson, M.S.
Ron
Matheney, Ph.D.
Tracey Carpenter, M.S.
Mark Feldman, M.S.
Ray Kenny, Ph.D
Gerald Pollack, M.S.
Mark Beeunas, M.S.
Bryce Winter, Ph.D.
Steve Skotnicki, Ph.D.
Joel Hennessy, M.S.
Donna Benson, M.S. Blair Lindford, M.S.
Tracy Thorliefson, M.S.
Karen Katrinak , M.S. Kathleen
McFadden, M.S.
Jennifer Abrahams, M.S.
Paul Clemens, M.S. Angela Bond, M.S. (in progress)
Sarah Roberts, M.S.
Mary Doppler, M.S. Michael Sheehan, M.S. (in progresss)
Bryce Winter, M.S.
Katrien van der Hoeven, (w/Burt) M.S.
Anthony Guerrea (w/Peacock)
Kerrie Neet, M.S.
Courtney Brand, M.S.
Merry Wilson Nowicki, M.S.
Louisiana State University
John Klasik, Ph.D.
Allen Ambuehl, M.S.
Daphne Jones, M.S.
LABORATORIES CONSTRUCTED
(Hands-on, including most of the glassblowing, metal vacuum line fabrication,
mass spectrometer reconstruction, and electronic wiring )
(1979-present) Stable Isotope Laboratory,
(1972-1979) Stable Isotope Laboratory,
EDITORIAL POSITIONS
Associate Editor, Bulletin
of Geologic Society of
Associate Editor, Journal of Sedimentary Petrology, 1989-1992.
Associate Editor, Geology, 1983-1984.
Guest Editor, Proceedings National Academy of Sciences
TEACHING AWARDS FROM ASU STUDENTS
(Thank you, students!)
FROM ASU GEOLOGY STUDENTS
(Presented at Annual Banquet):
TEACHER OF THE YEAR (Also
called "Outstanding Professor" or "Student Appreciation
Award"):
1990, 1994, 1995, 1997,
1998, 2008
BEST FIELD TRIP
1999, 2000
FROM ASU STUDENTS AT LARGE:
2002 "Last Lecture" (No, not an
invitation to leave, but an honor to be 1 of 3 selected annually to present an
evening lecture as if it were the last lecture you would ever give. Mine
was "What is Nature Doing? Campfire Reflections on the History of
Life in the Cosmos". April 24, 2002.
Leader For Geology Department Public
Field Trips Outreach Program
1989-present
1-4 public field trips each year including annual raft trip down
Elected Administrative Positions
Dean's Faculty Advisory
Council,
Invited Seminar Speaker (Partial List)
Lamont-Doherty Geological
Observatory
Phillips Petroleum Company Research Center
Chevron Oil Field Research Company (3 times)
University of Texas
University of Oklahoma (3 times)
Scripps Institute of Oceanography (2 times)
San Diego State University
Stanford University
Pennzoil Exploration Research
ARCO Exploration and Production Research (2 times)
AMOCO Production Company Research Laboratory (3 times)
U.S. Geological Survey, Flagstaff
University of Alberta
Battelle Memorial Institute
University of New Mexico (2 times)
Pennsylvania State University (3 times)
University of Arizona (3 times)
NASA Ames Research Center seminar series
California Institute of Technology (3 times)
Tulane University
University of California at Santa Cruz
University of Nevada, Las Vegas (2 times)
University of North Dakota
University of Texas at El Paso
Northern Illinois University
University of Chicago
University of Montana
UCLA (2 times)
University of Illinois (Walgreen Lecture, 2 times)
Yale University
New York Center for Studies on the Origin of Life (Rensselaer/SUNY
Albany) (see/hear it: http://www.origins.rpi.edu/seminar.html (10/23/00)
Lunar and Planetary Institute
University of California at Riverside (3 times)
Jet Propulsion Laboratory
Tellus World of Science, Edmonton, Alberta
Local:
Salt River Project Utility Company
U.S. Dept. Of Agriculture Water Conservation Lab
State of Arizona Dept. of Environmental Quality
Numerous talks to local astronomy clubs, citizen clubs, and associations
ARTICLES
Journal Listing: Science (3), Nature (4),
Geology (4), Journal of Geophysical Research (2), Earth and Planetary Science
Letters (2), Geochimica et Cosmochimica Acta (6) Journal of Geology (1),
Journal of Sedimentary Petrology (5), American Mineralogist (1), Journal of
Hydrology (1), Bulletin of the Geological Society of America (4), Economic
Geology (1), Applied Geochemistry (1), Chemical Geology (1), Precambrian
Research (2), Reviews in Mineralogy (1), Geochemical Society Special Papers
(1), Nuclear and Chemical Waste Management (1), Icarus (1), Paleogeography,
Paleoclimatology, Paleoecology (1), EOS, (1), Journal of Volcanology and
Geothermal Research (1), Naturwissenschaften (1), Astrobiology (1), other (4).
Knauth, L.P. and S.
Epstein, 1975, Hydrogen and Oxygen Isotope Rations in Silica from the
Knauth, L.P. and S. Epstein, 1976, Oxygen and Hydrogen isotope ratios in
nodular and bedded cherts: Geochimica et Cosmochimica Acta 140, p. 1095-1108.
Lowe, D.R. and L.P. Knauth, 1977, Sedimentology of the Onverwacht Group (3.4
billion years),
Lowe, D.R. and L.P. Knauth, 1978, The oldest marine carbonate ooids
reinterpreted as volcanic accretionary lapilli, Onverwacht Group,
Knauth, L.P. and D.R. Lowe, 1978, Oxygen Isotope Geochemistry of Cherts from
the Onverwacht Group (3.4 billion years), Transvaal, South Africa with
Implications for
secular variations in the isotopic compositions of cherts: Earth and Planetary
Science Letters 41, p. 209-222.
Jones, D.R. and L.P. Knauth, 1979, Oxygen isotopic and petrographic evidence
relevant to the origin of the Arkansas Novaculite (Devonian-Mississippian) of
Knauth, L.P., 1979, A model for the origin of Chert in Limestone: Geology 7, p.
274-277.
Lowe, D.R. and L.P. Knauth, 1979, Reply to discussion on the oldest marine
carbonate ooids reinterprets as volcanic accretionary lapilli, Onverwacht
Group,
Knauth, L.P., M.B. Kumar and J.D. Martinez, 1980, Isotope Geochemistry of Water
in
Knauth, L.P. and M. B. Kumar, 1981, Trace Water Content in
Knauth, L.P. and S. Epstein, 1982, Nature of water in authigenic silica:
American Mineralogist: 67, p. 510-520.
Knauth, L.P. and M.B. Kumar, 1983, Oxygen and Hydrogen Isotopic Character of
Brine Leaks in the Avery Island Salt Mine, South Louisiana, U.S.A., Journal of
Hydrology 66, p. 343-350.
Haimson, M. and L.P. Knauth, 1983, Stepwise Fluorination, A new approach for
the isotopic analysis of hydrous minerals, Geochimica et Cosmochimica Acta 47,
p. 1589-1595.
Hennessy, J. and L.P. Knauth, 1985, Isotopic variation in dolomite concretions
from the
Monterey Formation, California, Journal of Sed. Pet., v. 55, p. 120-130.
Beeunas, M. and L.P. Knauth, 1985, Preserved stable isotopic signature of
subariel diagenesis in the 1.2 B.Y, Mescal Limestone,
Force, E.R., B. Back, E.C. Spiker, and L.P. Knauth, 1986, A ground-water mixing
model for the origin of the Imini manganese deposit (Cretaceous) of
Knauth, L.P. and M. Beeunas, 1986, Isotope Geochemistry of fluid inclusions in
Permian Halite with implications for the isotopic history of ocean water and
the origin of saline formation waters. Geochimica et Cosmochimica Acta 50, p.
419-433.
Knauth, L.P. and M. Beeunas, 1987, Preserved stable isotope signature of
subariel diagenesis in the Mescal Limestone,
Knauth, L.P., 1988, Origin and Mixing History of Brines:
Werner, M.L., M. Feldman, and L.P. Knauth, 1988, Petrography and Geochemistry
of Richton Dome, MS., Carock, Chemical Geology, v. 74, p. 113-135.
Tesoriero, A.J. and L.P. Knauth, 1988, The Distribution of Trace Water Around
Brine Leaks in the Avery Island Salt Mine: Implications for the Natural
Migration of Water Salt, Nuclear and Chemical Waste Management; Radioactive Waste
Management; v. 8, p. 189-197.
Matheney, R.K. and L.P. Knauth, 1989, Investigation of Oxygen Isotope
Fractionation between Marine Bigenic Silica and Seawater, Geochiica et
Cosmochimica Acta 53, p. 3207-3214.
Knauth, L.P. and S.K. Roberts, 1991, The Hydrogen and Oxygen Isotopic history
of the Silurian-Permian hydrosphere as determined by direct measurement of
Fossil Water. Geochemical Society Special Publication No. 3, p. 91-104.
Winter, B.L. and L.P. Knauth, 1992, Isotope Geochemistry of Carbonate Fracture
Fills in the
Winter, B.L. and L.P. Knauth, 1992, Isotope Geochemistry of Early Proterozoic
Carbonate Concentrations in the Animikie Group of the Lake Superior Region:
Evidence for anaerobic bacterial processes. Precambrian Research 54, p.
131-151.
Kenny, Ray and L.P. Knauth, 1992, Continental Paleoclimates from dD and d18O of Secondary Silica in Paleokarst Chert lags.
Geology, v. 20, p. 219-222.
Knauth, L.P., 1992, Origin and diagenesis of cherts: An isotopic perspective in
isotopic signatures and sedimentary records, N. Clauer and S. Chaudhuri (Eds.):
Lecture Notes in Earth Sciences #43, Springer-Verlag, p. 123-152.
Winter, Bryce and L.P. Knauth, 1992, Stable isotope geochemistry of cherts and
carbonates from the 2.0 Ga Gunflint Iron Formation: Implications for the
depositional setting and the effects of diagenesis and metamorphism,
Precambrian Research, v. 59, p. 283-313.
Knauth, L.P., 1993,
Hovorka, Susan D., L.P. Knauth, R. Stephen Fisher, and Guoqiu Gao, 1993, Marine
to Non-Marine facies transition in Permian Evaporites of the Palo Duro Basin,
Texas; Geochemical Response. Bull. Geol. Soc. Amer. 105, p. 1119-1134.
Matheney, R.K. and L.P. Knauth, 1993, New isotopic temperature estimates for
early silica diagenesis, Geology 21, p. 519-522.
Horodyski, R.J. and L.P. Knauth, 1994, Life on Land in the Precambrian,
Science, 263, p. 494-498.
Knauth, L.P. 1994 Petrogenesis of Cherts; in Reviews in Mineralogy, Vol. 29,
Silica: Physical Behavior, Geochemistry, and Materials Applications, P.J.
Heaney, C.T. Prewitt, G.V. Gibbs, Eds. Mineralogical Soc. Amer. 233-258.
Knauth, L.P. 1994, Life on land in the Precambrian - The Arizona connection; in
Fossils of Arizona, Vol. II, D.Boaz, M. Dornan, S. Bolander, Eds. Mesa
SouthWest Museum, Mesa Arizona, ISBN 0-935810-55-2, pp. 23-32.
Guerrera, A., Peacock, S., and Knauth, L.P. (1997) Large 18O and 13C depletions
in greenschist facies carbonate rocks, western Arizona, Geology, 25, 943-946.
Knauth, L.P. (1998) Salinity history of the Earth's early ocean, Nature, 395,
554-555.
Eastoe, C.J., Long, A., and L.P. Knauth (1999) Stable chlorine isotopes in the
Palo Duro Basin, Texas: Evidence for preservation of Permian evaporite brines.
Geochim. Cosmochim. Acta, v.63, 1375-1382.
Knauth, L.P., Klonowski, S., Burt, D (2000) Ideas about the surface runoff
features on Mars (letter). Science, 290, 711-712.
Kenny, R. and L.P. Knauth (2001) Stable isotope variations in the
Neoproterozoic Beck Spring and Mesoproterozoic Mescal paleokarst: Implications
for life on land in the Precambrian. Bulletin Geologic Society of
Knauth, L.P. and Burt, D.M. (2002) Eutectic brines on Mars: Origin and possible
relation to young seepage features. (Icarus, v. 158, 267-271).
Knauth, L.P. (2003) Siliceous Sediments. Encyclopedia of Sediments and
sedimentary rocks. G.V. Middleton, Ed. Kluwer Academic Publishers.
Burt, D.R. and Knauth, L.P. (2003) Electrically conducting, Ca-Rich Brines,
rather than water, expected in the Martian Subsurface. Journal of Geophysical
Research, 108 (E4) 8026, doi:10.1029/2002JE001862, 2003.
Knauth, L.P. and D.R. Lowe (2003) Archean climatic temperature inferred
from oxygen isotope geochemistry of cherts in the 3.5 Ga
Knauth, L.P., Brilli, M., and Klonowski, S. (2003) Isotope geochemistry
of caliche on basalt. Geochimica et Cosmochimica Acta, 67, 185-195. (Selected
for inclusion in Virtual Journal of Geobiology, http://earth.elsevier.com/geobiology)
Knauth, L.P. (2005) Temperature and salinity history of the Precambrian
ocean: Implications for the course of microbial evolution. Paleogeography,
Paleoclimatology, Paleoecology, 219, 53-69.
Knauth, L.P., Burt, D.M., and Wohletz, K.H. (2005) Impact origin of sediments
at the
Burt,D.M., Wohletz, K.H., and Knauth, L.P. (2006) Mars and Mine Dumps. EOS, Transactions, American geophysical
Knauth, L.P. (2006) Signature Required. Nature (News and Views), 442, 873-874.
Skotnicki, S.J. and L.P. Knauth (2007) The middle Proterozoic Mescal
Paleokarst, central Arizona, U.S.A.: karst development, silicification, and
cave deposits. Journal of Sedimentary
Research, 77, 1046-1062.
Burt, D.M., Knauth, L.P., Wohletz, K.H., and Sheridan, M.F. (2008) Surge
deposit misidentification at Spor Mountain, Utah and elsewhere: A cautionary
message for Mars. Journal of Volcanology
and Geothermal Research. 177, 755-759.
Garvie, L., Knauth, L.P., Bungartz, F., Klonowski, S., Nash III, T., (2008)
Life in extreme environments: survival strategy of the endolithic desert lichen
Verrucaria rubrocincta.
Naturwissenschaften, 95, 705-712.
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. (2008) Biosignatures in Ancient Rocks: A Summary of
Discussions at a Field Workshop on Biosignatures in Ancient Rocks. Astrobiology. 8, 883-895.
Knauth, L.P. and Kennedy, M.J. (2009) The Late Precambrian Greening of the
Earth. Nature. 460, 728-732.
TECHNICAL REPORTS
Knauth, L.P. (1979)
Isotopic Studies of Waters in Salt Mines, in an investigation of the utility of
Gulf Coast salt domes for the storage or disposal of radioactive wastes, J.D.
Martinez, ed., p. 197-219, LSU Institute for Environmental Studies E511-02511-A-1.
Knauth, L.P. (1980) Trace Water Analysis of Salt and Isotopic Studies, in
Report of the LSU Institute for Environmental Studies, E511-02500-Q-4, p.
20-27.
Knauth, L.P. and M. Beeunas (1985) Origin of fluid inclusion water in bedded
salt deposits,
Palo Duro Basin, Texas, Office of Nuclear Waste Isolation Technical Report
#569, Battelle Memorial Institute, 60 p
Knauth, L.P. (1981) Light Element Isotopic Geochemical Analysis, Technical
Report, ONWI-9(81-4), p. 90-92, Battelle Memorial Institute,Columbus, Ohio.
Knauth, L.P. (1982) Light Element Isotopic Geochemical Analysis, 1982,
Technical
Report, 1982, ONWI-9(83-3), p. 72-74, Battelle Memorial Institute,
Knauth, L.P. (1982) Light Element Isotopic Geochemical Analysis, 1982, Technical
Report, ONWI-9(82-4), p. 80-82, Battelle Memorial Institute,
Knauth, L.P. (1982) Light Element Isotopic Geochemical Analysis, 1982,
Technical
Report, ONWI-9(83-1), p. 47.49, Battelle Memorial Institute,
Kreitler, C.W., J.B. Chapman, and L.P. Knauth (1984) Chemical and isotopic
composition of
waters from the Salina Ometepec. Baja California, Texas Bureau of Economic
Geology, OF-WTWI-1984-41, 30 p.
Knauth, L.P. (1985) ASU testing of water in salt, Proceedings of Salt
Respiratory Projects'
Workshop on Brine Migration, ONWI Technical Report, Battelle Memorial
Institute; P.C.910, C.101.
Knauth, L.P. (1987) Stable isotope constraints on the origin of brine in the
Strategic Petroleum Reserve. 24 pp. For
Knauth, L.P. (1989) Stable isotope constraints on the origin of brine in the
Weeks Island
Strategic Petroleum Reserve. Update following analyses of samples taken in
1989, 16 pp., For U.S. Dept. Energy Strategic Petroleum Reserve.
Knauth , L.P. (1990) Stable isotope constraints on the origin of brine in the
Weeks Island
Strategic Petroleum Reserve; Update following analyses of samples taken in 1990,
9 pp., For U.S. Dept. Energy Strategic Petroleum Reserve.
Knauth, L.P. (1993) Stable isotope studies at the Coronado Generating Station,
22 pp., For Salt River Project, Phoenix, AZ.
Knauth, L.P. and Greenbie, M. (1997) Stable isotope investigation of Ground
water-Surface water interactions in the Verde River Headwaters Area. Report for
Arizona Groundwater Protection Fund, award #95-001. 52 pp + appendices.
Knauth, L.P. and Tracey Carpenter (2000) Stable isotope investigation of Salt
River Project Ground Water Recharge Facility, 17pp., For Salt River Project,
THESIS AND DISSERTATION TITLES
AT
MS:
Haimson, Marshall, 1982, "Oxygen Isotope Studies of Silica in the Monterey
Formation, California", 77 p.
Hennessy, Joel, 1983, "Isotopic Variation in Dolomite Concretions from the
Monterey Formation, California", 50 p.
Beeunas, Mark Anthony, 1984, "Preserved Stable Isotopic Signature of
Subaerial Diagenesis in the 1.2 b.y. Mescal Limestone, Central Arizona:
Implications for the Timing and Development of a Terrestrial Plant Cover",
91 p.
Feldman, Mark David, 1984, "Hydrogen Isotope Geochemistry of Trace Water
in Sedimentary Dolomite", 64 p.
Thorleifson, James Tracy, 1984, "A Modified Stepwise Fluorination
Procedure for the Oxygen Isotopic Analysis of Hydrous Silica", 71 p.
Tesoriero, Anthony John, 1985, "Distribution of trace water around brine
leaks in the Avery Island Salt mine: Implications for natural migration of
water in salt. 102 p.
Abrahams, Jennifer Anne, 1986, "Isotopic Investigation of Coastal
Paleozoic Carbonate Diagenesis Adjacent to Crystalline Rock Highlands", 92
p.
Katrinak, Karen Ann, 1987, "Stable Isotope Studies of Cherts From the
Archean Swaziland Supergroup of South Africa:", 100 p.
Winter, Bryce, 1987, "Isotopic Investigation of Carbonate Fracture fills
in the Monterey Formation, California", 141 p.
Neet, Kerrie Elise, 1988, "A Stable Isotopic Investigation of the Mazatzal
Peak Quartzite: Implications for Source Terranes", 109 p
Roberts, Sarah Kealy, 1990, "Stable Isotope Systematics of Dolomite
Concretions and Beds from the Miocene Monterey Formation, California", 68
p.
Brand, Courtney 1995, " Evolution Of Surface Water In Central And Southern
Arizona, Using Hydrogen And Oxygen Isotopic Analysis". 126p.
Guerrera Jr., Antonio 1996, "Stable Isotope Variations During Progressive
Metamorphism and Deformation of the Kaibab and Martin Formations". 104 p.
(co-advisor: S. Peacock).
Clemens, Paul Leslie 1996, "A modified procedure for the oxygen isotopic
analysis of water and brines" 65 P (Department of Chemistry) MS
Benson, Donna 1996, "The Effect Of Stratigraphic Unconformities On The
Development Of Fractures In Layered Sedimentary Rocks". 83 p.
Knadel, Gwen 1997, "A Stable Isotope Study Of The Secondary Silica Of The
Doppler, Mary 1998, "Diagenetic features of chert as a guide to sourcing
chert artifacts of the east-central Mogollon rim Region of Arizona. 86p.
Van der Hoeven, Kaatje, 1999 "Proterozoic chrysotile skarn deposits in the
salt
Nowicki, Meredith J., 2000, "d13C and d18O variations in the Thunder
Springs Member of the
Carpenter, Tracey, 2001, "The origin of isotopically anomalous waters of
the Mogollon Rim Region of Arizona", 107p.
Pollack, Gerald, 2001, The origin of secondary silica in volcanic rocks,
Lindford, Blair, 2001, Isotope chemostratigraphy of the Beck Spring Dolomite,
McFadden, Kathleen, 2004, End-Permian Karst Stratigraphy and geochemistry at
the Kaibab-MoenKoopi contact and its relationship to the Permian-Triassic
boundary for Northern Arizona, 94p.
Bond, Angela, 2007 in progress: Isotope
hydrology of the Phoenix Basin.
PhD:
Matheney, Ronald Kenneth,
1989, "Oxygen Isotopic Investigations in Stepwise Fluorination of Hydrous
Silica And Other Geologic Materials", 136 p.
Kenny, Ray, 1991, "Stable Isotopes on Chert and Carbonate from
Continental, and Lowland Subaerial Exposure Surfaces: southwestern U.S.",
204 p.
Winter, Bryce L., 1991, "Stable Isotope Geochemistry of Early Proterozoic
Sedimentary Rocks in the Lake Superior Region, North America", 193 p.
Skotnicki, Steven J., 2001, "Timing of silicification of the Middle
Proterozoic Mescal Paleokarst and the transition from the Mescal to Troy
Quartzite, Central Arizona, 293 p.+map.
AT
PhD:
Klasik, John Arthur 1976 "The silicification of Eocene Deep-Sea Sediments
in the Atlantic Ocean" 201 p.
MS:
Jones, Daphne L. 1978 "Oxygen isotopic and petrographic evidence relevant
to the origin of the Arkansas Novaculite (Devonian-Mississippian) of Arkansas
and Oklahoma" 90 p.
Ambuehl, Alan Wayne 1979 "Surficial Tertiary authigenic silica of the Gulf
Coastal Plain" 177p.
PUBLISHED ABSTRACTS
Knauth, L.P. and
S. Epstein (1971) Oxygen and hydrogen isotope relationships in cherts and
implications regarding the isotopic history of the hydrosphere, Geol. Soc.
America Abstracts with Programs 3(7), p. 624
Knauth, L.P. and S. Epstein (1973) Hydrogen and oxygen isotope ratios in cherts
from theJOIDES Deep Sea Drilling Project, Geol. Soc. America Abstracts with
Programs 5(7), p.694.
Knauth, L.P. and S. Epstein (1973) Implications of the isotopic composition of
cherts for the
climatic temperature history of the Earth, Geol. Soc. America Abstracts with
Programs
5(7), p. 695.
Jendrzejewski, J. and L.P. Knauth (1973) SEM observations of quartz in cherts:
etched vs.
unetched surfaces, Abstract in Proc. Electron Microscopy Soc.
Meeting.
Knauth, L.P. (1974) Relationship of the isotopic composition f cherts to the
depositional
environments of carbonates, Geol. Soc. America Abstracts with Programs 6(7), p.
828.
Lowe, D.R. and L.P. Knauth (1976) Sedimentology of the cherts of the Overnwacht
Group (3.4. B.Y.),
Jones, D.R. and L.P. Knauth (1978) Oxygen isotopic evidence relevant to the
origin of the
Arkansas Novaculite, Geol, Soc. America Abstracts with Programs 10(7), p. 430.
Knauth, L.P. and D.R. Lowe (1978) Oxygen isotopic compositions of cherts from
the
Onverwacht Group (3.4. B.Y.),
Knauth, L.P. and C.H. Moore (1979) Isotope Geochemistry of subsurface Jurassic
Smackover carbonates, 1979, Geol. Soc. America Abstracts with Programs.
Lowe, D.R. and L.P. Knauth (1979) Petrology of archean carbonate rocks in the
Overnwacht
and Fig Tree Groups,
Abstracts 4, p. 64.
Knauth, L.P. and M.B. Kumar (1980) Trace water content of Gulf Coast Salt
Domes, Geol. Soc. America Abstracts with Programs.
Sykes, M.L., G.H. Heiken, J.R. Smyth, and L.P. Knauth (1980) Zeolites in
silicic tuffs of the
Knauth, L.P. (1982) The Origin of Water in Salt, Geol. Soc. America Abstracts
with Programs, v. 14, No. 7, p. 532.
Knauth, L.P. (1982) Isotopic Analysis of Upper Proterozoic Cherts with Possible
Implications
for Upper Precambrian Climates and the Phanerozoic Explosion of Life. Geol.
Soc.
America Abstracts with Programs, v. 14, No. 7, p. 532.
Haimson, M. and L.P. Knauth (1982) Stepwise Flourination-A New Approach for
Isotopic
Analysis of Hydrous Minerals. Geol. Soc. America Abstrcts with Programs, v. 14,
No. 7,
p. 505.
Beeunas, M. and L.P. Knauth (1982) Preserved Stable Isotopic Signature of
Subariel diagenesis in the 1-2 B.Y. Mescal Limestone of Central Arizona. Geol.
Soc. America Abstracts with Programs, v. 14, No. 7, p. 44.
Hennessy, J. and L.P. Knauth (1983) Isotopic Variation in Dolomite Concretions
from the
Beeunas, M. and L.P. Knauth (1983) Isotopic Composition of Fluid Inclusion in
Permian Halite-Implications for the Isotopic History of Sea Water, Geol. Soc.
America Abstracts with Programs, v. 15, No. 6., p. 524.
Knauth, L.P. and N. Hubbard (1984) Isotope Geochemistry of Formation Waters in
the
Feldman, M. and L.P. Knauth (1984) Hydrogen Isotope Geochemistry of Trace Water
in
Sedimentary Dolomite, Geol. Soc. America Abstracts with Programs, v. 16, No. 6,
p. 507.
Thorliefson, T. and L.P. Knauth (1984) An Improved Stepwise Flourination
Procedure the
Oxygen Isotopic Analysis of Hydrous Silica, Geol. Soc. America Abstracts with
Programs, v. 16, No. 6, p. 675.
Knauth, L.P., S. Kealy, and S. Larimer (1985) Isotopic composition of Silurian
sea water, Geol. Soc. America Abstract with Program, v. 17, No. 7, p. 630.
Beeunas, M. and L.P. Knauth (1986) Isotope Geochemistry of Fluid Inclusions in
Permian
Halite with Implications for Isotopic History of Ocean Water, American Chemical
Society
192nd National Meeting, Div. Geochemistry Abstracts #24.
Knauth, L.P. (1986) Stable isotope variations of deep basins brines reexamined,
Geol. Soc.
America Abstracts with Programs, v. 18, No. 6, p. 659.
Knauth, L.P., S. Hovorka and R.S. Fisher (1986) Isotope Geochemistry of Fluid
Inclusions in
relation to Sedimentology and bromide geochemistry of halite in the Palo Duro
Basin,
Texas, American Current Research on Fluid Inclusions, Programs and Abstracts,
Inaugural vol., New Mexico Institute of Mining and Technology, Socorro, New
Mexico.
Werner, M.L., M. Feldman, and L.P. Knauth (1987) Petrography and geochemistry
of calcite
caprock at Richton Dome, Miss: a model for dark/light layering, Soc. Econ.
Paleontologists and Mineralogists, Midyear Meeting, IV, p. 91.
Werner, M.L., M. Feldman, and L.P. Knauth (1987) Petrography, structure and
geochemistry of gypsum veins in Richton Dome Caprock, Miss: Evidence for
incomplete hydration, Soc. Econ. Paleontologists and Mineralogists, Midyear
Meeting, IV, p. 91.
Feldman, M. and L.P. Knauth (1987) Paleoatmospheric Gases in brine inclusions
in halite, Geol. Soc. America Abstracts with Programs, v. 19, No. 7, p. 661.
McHone, J.F. and L.P. Knauth (1988) Barringer Crater Stishovite: Oxygen-18 rich
relative to
bulk target rock: Lunar Science XIX, p. 756-757, Lunar and Planetary Science
Institute,
Houston, Tx.
Katrinak, K. and L.P. Knauth (1988) Oxygen and hydrogen isotope ratios in
Archean Cherts as indicators of climatic temperature, American Geophysical
Union, EOS, 69, p. 1514.
Matheney, R. and L.P. Knauth (1988) Investigation of oxygen isotope equilibrium
in marine
biogenic silica, 1988, Am. Geophy.
Winter, B. and L.P. Knauth (1989) Isotopic investigation of carbonate fracture
fills in the
Monterey Formation, Califormia, 1989, Geol. Soc. America, Abstracts with
Programs, v.
21, No. 5, p. 160.
Neet, K.E. and L.P. Knauth (1989) The oxygen isotopic composition of the
Mazatzal Peak
Quartzite: implications for source terranes, Geol. Soc. America, Abstracts with
Programs, v. 21, No. 5, p. 121.
Roberts, S. and L.P. Knauth (1989) Stable isotope systematics of dolomite
concretions and beds from the Miocene Monterey Formation, California, Geol.
Soc. America, Abstracts with Programs, 1989 Annual Meeting, p. A17.
Feldman, M. and L.P. Knauth (1989) The oxygen content of the Permian
atmosphere: results from direct measurement of paleoatmospheric gasses
dissolved in brine inclusion in halite, Geol. Soc. America, Abstracts with
Programs Annual Meeting, p. A138.
Winter, B. and L,P, Knauth (1989) Isotopic investigation of early Proterozoic
carbonate
concretions from the Animikie Group of th eLake Superior Region: Evidence for
anaerobic bacterial process, Geol. Soc. America, Abstracts with Programs 1989
Annual
Meeting, p. A138.
Knauth, L.P. (1989) Climatic Temperature history of the earth as deduced from
secular
variations in the 180O/16O ratios of cherts. The Sun in Time, Univ. of
Knauth, L.P. (1989) The hydrogen and oxygen isotopic history of the hydrosphere
for the last 400 million years as determined by direct measurement of fossil
water, Extended abstract for the Epstein Symposium, Div. Geological and
Planetary Science, Calif. Inst. Of Technology, Dec. 1989.
Winter, B. and L.P. Knauth (1989) Oxygen, hydrogen and carbon isotope study of
the
Proterozoic pillow basalt in the Cornucopia Member of the Alder Senes,
Kenny, R., L.P. Knauth and R.J. Hordyski (1990) Isotopic, field and
micropaleontologic study
of the Proterozoic Beck Spring (CA.) and Mescal (AZ.) Formations: Evidence for
Precambrial terrestrial photosynthetic communities. Geol. Soc. America
Abstracts with
Programs, v. 22, No. 7, p. A191.
Winter, B.L. and L.P. Knauth (1990) Isotopic constraints on the origin of the
Gunflint Cherts.
Geol. Soc. America Abstracts with Programs, v. 22, No. 7, p. A263.
Knauth, L.P. and S.K. Roberts (1990) Use of stable isotopes and chemical
analyses to determine brine sources in salt domes: Progress and problems. Geol.
Soc. America Abstracts with Programs, v. 22, No. 7, p. A247.
Winter, B.L. and L.P. Knauth (1990) Carbon and oxygen constraints on the origin
of carbonate in the ~2.0 GA Gunflint
Matheney, R.J. and L.P. Knauth (1992) Reduced oxygen-isotope temperature
estimates for the Opal -A/Opal-CT Transition, Monterey Fm.,
Knauth, L.P. and R.J. Horodyski (1992) Life on Land in the Precambrian, Geol.
Soc. America Abstracts with Programs, v. 24, p. A-99.
Shirley, D.H. and L.P. Knauth (1992) The use of stable isotopes to characterize
groundwater and interpret contaminated water sources.
Knauth, L.P. and R.J. Horodyski (1993) Evidence for and implications of life on
land in the
Proterozoic, Geol. Soc.
Knauth, L.P. and Dennis Shirley (1993) Use of stable isotopes to evaluate the
impact of plant operations on ground water quality at a major power generating
facility. Geol. Soc. America Abstracts with Programs, v. 25, No. 6, p. A-80.
Knauth, L.P. (1994) Paleokarst: A window of life on land in the Precambrian.
Karst Waters
Institute Special Pub. No. 1, Breakthroughs in Karst Geomicrobiology and Redox
Geochemistry, I.D. Sasowsky and M.V. Palmer, Eds., p. 42-43.
Knauth, L.P. and Clemens, P.L. (1995) Climatic temperature history of the Earth
based on isotopic analyses of cherts. Geological Society of
Brand, C.C. and L.P. Knauth (1995) Stable isotopic evolution of watersheds with
implications for the origin of "local meteoric water lines".
Geological Society of
Runnegar, B., Gehling, J.G., Horodyski, R.J., Jensen, S., and L.P. Knauth
(1995) Base of the Sauk Sequence is a global eustatic event that lies just
above the Precambrian-Cambrian boundary. Geological Society of
Knadel, G. and L.P. Knauth (1996) Origin of secondary quartz in a silicic
volcanic complex; implications of O and H isotope data for hydrothermal
deposition versus low temperature weathering. Geological Society of
Guerrera, A., Knauth, L.P. and Peacock, S.M. (1996) Large 18O and 13C depletions
in carbonates during low grade metamorphism; examples from western
Knauth, LP (1998) Early evolution of life in non-marine environments, 6th
symposium on chemical evolution and the origin and evolution of life, NASA
Ames. Acevedo, S.E., DeVincenzie, D., and chang, S., eds. NASA /CP-1998-10156,
p. 68-69.
Knauth, L.P (1998) Salinity, temperature, and oxygen history of the
Knauth, L.P. (1999) Oxygen isotopic analyses of diagenetic cherts and the
climatic temperature history of the earth. 9th annual V.M. Goldschmidt
Conference,
Knauth, L.P. (1999) Salinity history of seawater. 9th annual V.M. Goldschmidt
Conference,
Knauth, L.P. (1999) Isotopic investigation of the source of the Verde river
Headwaters with implications for their possible hydrologic connection with
groundwater in the
Van der Hoeven, K.J. Knauth, L.P.,and Burt, D. (1999) Extremely low-temperature
magnesian skarns: chrysotile deposits of the
Knauth, L.P. and Farmer, J. (1999) Biosignatures in calcite formed during the
weathering of basalt. Geological Society of
P. Westerhoff, P. Knauth, P. Dahlen, and T. Carpenter (1999) Regional
assessment of GRUSP and other recharge projects on groundwater quality:
benefits of recharging into ephemeral channels, AWPCA Annual Conference, Tucson, AZ, May 5-7 (1999).
Knauth, L.P. (2000) Life on land in the Precambrian and the marine vs
non-marine setting of early evolution. First Astrobiology Science conference,
April 3-5, 2000,
Garvie, L.A.J., Bungartz, F., Nash III,
T.H., and Knauth, L.P. (2000) Caliche dissolution and calcite biomineralization
by the endolithic lichen Verrucaria rubrocincta Breuss in the
Knauth, L.P., Burt, D.M. and Klonowski, S. (2000) Dense, eutectic,
valley-forming, intermediate latitude (DEVIL) brines on Mars. Geologic
Society of
Knauth, L.P. and D.R. Lowe (2001) Environmental conditions of the early Earth
at the time of the earliest microfossil record. Second Astrobiology Science
Conference, April 10-12, Carnegie Institution of
Knauth, L.P. and D.M. Burt (2001) "Follow the water, beware the
brine": Astrobiological Implications of aqueous seeps on Mars. Second
Atrobiology Science Conference, April 10-12, Carnegie Institution of
Knauth, L.P. (2001) Isotopic biosignature in calcite formed during weathering
of basalt: Implications for past life on Mars, early life on land, and ALH
84001. Second Astrobiology Science Conference, April 10-12, Carnegie
Institution of
Skotnicki, S.J. and L.P.Knauth (2001) Timing of silicification of the Middle
Proterozoic Mescal paleokarst and the transition from the Apache Group to the
Troy Quartzite in
Knauth LP, Burt DM, and Tyburczy, JA, 2001, Highly conductive eutectic brines
rather than water expected in the martian subsurface. In Conference on the
Geophysical Detection of Subsurface Water on Mars, p. 60-61. LPI Contribution
No. 1095, Lunar and Planetary Institute,
Knauth, L.P., 2001, Is hydrology of Mars the hydrology of brines?
Knauth, L.P. 2001, Importance of brines and caliche in the search for past life
on Mars. EOS Trans. AGU, 82(47), Fall Meet. Suppl. Abstract P21C-05.
Bungartz, F. ,
Knauth, L.P. (2002) Early Oceans: Cradles of Life or Death Traps? Astrobiology
Science Conference 2002, April 7-11,
Knauth, L.P. and Burt, D.M. (2004) The “Brine Splat” Hypothesis for
Features Observed at the
Burt, D.M. and Knauth, L.P. (2004) Brine splat interpretation of features seen
at hte
McFadden, K.A. and Knauth. L.P. (2004) Geochemistry at the Kaibab-Moenkopi
contact and its relationship to the Permian-Triassic boundary for
Burt, D.M., L.P. Knauth, K.M. Wohletz, (2005) 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 XXXVI, Abstract 1527.
Knauth, L.P. (2005) An alternative view of the course of evolution with
implications for life elsewhere in the Universe. The eighth NASA Exobiology Principal
Investigator Symposium,
Burt, D.M., Knauth, L.P., Wohletz, (2005) Impact derived sedimentary rocks: How
common Mars? Geol. Soc. Amer. Annual mtg.
Knauth, L.P. and Kennedy, M. (2005) An alternative view of C isotope variations
in Neoproterozoic carbonates. Geol. Soc. Amer. Annual mtg.
Knauth L.P., Burt, D.M., and Wohletz K.H. (2006) 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 XXXVII, #1869.
Burt, D.M., Knauth, L.P.,
Wohletz, K.H., and
Burt, D.M., Knauth, L.P. and Wohletz, K.H. (2006) 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,
Burt, D.M., Knauth, L.P. and Wohletz,
K.H. (2006) Impact dispersal and weathering of sulfides on early Mars: A source
of acid sulfates and a possible habitat for microbes: Geol.
Soc. Am., Abstracts with Programs, v. 38, no. 7, p. 308, Paper 123-8.
Knauth, L.P., Awramik, S.M., and Buchheim, H.P. (2006) Isotope geochemistry of
2.7 Ga chert and carbonate, Tumbiana Formation,
Ohmoto, H. Watanabe, Y., Allwood, A.C., Burch, I.W.,Knauth, P., Yamaguchi,
K.E., Johnson, I. (2006) Discovery of probable >3.43 Ga Paleolaterites in
the
Burt, D.M. , Knauth L.P., Wohletz,
K.H., (2007) Sedimentary concretions vs
impact condensates: Origin of hematitic spherules of Meridiani Planum, Mars. Lunar and Planetary Science XXXVIII, #1922.
Burt, D.M. and L.P. Knauth (2007) Impacts, salts, and ice on Mars: how brine flow in young gullies
and elsewhere could be related to impact cratering. Lunar and Planetary Science XXXVIII, #2054.
Knauth, L.P., Bryan, S., Burt, D.M., Wohletz, K.H. (2007) Impact surge on Mars.
Lunar and Planetary Science XXXVIII #1757.
Awramik, S.M. and Knauth, L.P. (2007) Neoproterozoic stromatolites of the Death
Valley Region: Let the rehabilitation begin. Annual meeting of the Geological
Society of America, Denver, Paper no. 12-5.
Knauth, L.P. and Kennedy, M. (2008) Greening of the late Precambrian
landscape. Abstracts with
Programs-Geological Society of America, v. 40, no. 6, p. 96.
Burt, D.M., Knauth, L.P., Wohletz, K.H. (2008) The late heavy bombardment and
Mars. Abstracts with Programs-Geological Society of America, v. 40, no.l6, 238.
Burt, D.M., Knauth, L.P., Wohletz, K.H. (2008) The late heavy bombardment:
Possible influence on Mars. Lunar and
Planetary Institute Workshop on Early solar System Impact Bombardment, 2008, abstract #3030.
Burt, D.M., Knauth, L.P., Wohletz, K.H. (2008) Martian gullies and salty
sidewalks. 39th Lunar and Planetary Science conference, LPI
Contribution, report: 1301, pp.19-20.
Knauth, L.P. (2008) Carbon isotope biosignatures in rocks on early Earth and
Mars. Astrobiology v. 8, no. 2, Session 24, #24-27-O.
Knauth, L.P. (2008) The Late Precambrian Greening of the Earth. Astrobiology v. 8, no. 2 Session 38, # 38-07-P
GRANTS
Grant
Sources: Federal: National
Science Foundation (12)
Department of Energy (8)
NASA (9)
Department of Agriculture (1)
State: Arizona Water Protection Fund
(1)
Universities (2)
Industry: Amoco Oil (3)
Exxon Oil (1)
Chevron Oil (4) ARCO Oil (1)
Shell Oil (2)
Salt River Utility Co. (2)
Grant Listing: (Principal Investigator on all but one DOO grant, one
NASA grant, one SRP grant, and 2 NSF grants
1. National Science Foundation. 06/01/73-09/01/73
2. National Science Foundation. 12/01//73-05/31/76.
3. Shell Development Company-6 inch isotope ratio mass spectrometer and
accessories plus spare parts. 1974.
4.
5. Summer Research Award, Louisiana State University Council on Research. 1976.
6. National Science Foundation. 06/01/76-11/30/77.
7. Louisiana State University Applied Carbonate Research Program.
05/15/78-06/15/78.
8. National Science Foundation. 06/15/77-08/14/79.
9. Department of Energy. 10/01/78-10/01/79. (Principle Investigator, J.D.
Martinez. L.S.U. Institute for Environmental Studies,).
10. Exxon Production Research Company-6 inch isotope ratio mass spectrometer
and accessories plus spare parts, 1979.
11. Water in Zeolites. Department of Energy (Los Almos).
12. National Science Foundation. 01/01/80-06/30/81.
13. Department of Energy via Battelle Memorial Institute (Office of Nuclear
Waste Isolation. 06/01/81-09/30/81.
14. Amoco Production Company. 01/82-indefinite.
15. Chevron Oil Field Research Company. 08/82-indefinite.
16. Department of Energy via Battelle Memorial Institute (Office of Nuclear Waste
Isolation. 10/01/82-09/30/82.
17. Amoco Production Research. 01/83-indefinite. Isotopic Investigations of
Authigenic Silica.
18. Department of Energy via Battelle Memorial Institute (Office of Nuclear
Waste Isolation. 10/01/82-09/30/83.
19. U.S. Department of Agriculture, Water Resources Laboratory.
06/01/83-09/30/83.
20. Atlantic
21. Amoco Production Research-$6,000. Isotope Studies, Authigenic Silica.
01/84-indefinite.
22. National Science Foundation-$77,182. Isotope Studies of Hydrous Silica and
Isotopic History of Sea Water, 02/84-12/86.
23. Chevron Oil Field Research Company. Isotopic Studies of Hydrogen,
07/01/84-12/30/84.
24. Department of Energy via Battelle Memorial Institute. Brines in Salt and
Isotope Hydrology, 10/01/83-09/31/86.
25. Department of Energy via Battelle Memorial Institute. Brines in Salt and
Isotope Hydrology, 10/01/86-09/30/87.
26. Shell Development Company: Mattach-Herzog Double Focusing Analytical Mass
Spectrometer plus accessories and spare parts, 1986.
27. National Science Foundation. Isotopic Studies of Hydrous Silica and the
Isotopic History of Sea Water,.
28. Department of Energy via Stone & Webster Engineering Corporation.
10/01/87-03/31/88, Isotope Studies in brines and salt.
29. Chevron Oil Field Research Company-VG Micromass 602 C isotope ratio mass
spectrometer, 1988.
30. National Science Foundation. Isotopic Studies of Precambrian Silicified
Erosion Surfaces, 07/01/89-12/31/91.
31. National Science Foundation-Origin or silt-sized quartz in shales. (ASU
component of grant to H. Blatt,
32. National Science Foundation-Geochemistry and Paleontology of Precambrian
Silicified Erosion Surfaces. 07/01/91-06/30/94.
33. Chevron Oil Field Research Company: Automated MAT-250 Isotope Ratio Mass
Spectrometer, 1992.
34. Stable Isotope studies of the Coronado Generating Station, Salt River
Project, 7/1/92 - 7/1/93.
35. Geochemistry and Paleontology of Precambrian silicified erosion surfaces.
National Science Foundation (joint proposal with R. Horodyski, Tulane
University). (7/1/91 - 6/30/94).
36. Climatic temperature record of cherts. National Science Foundation 1/1/95 -
1/31/97.
37. Stable isotope hydrology of
38. Salt River Project 8/15/98 - 8/15/99 (co PI with P. Westerhoff in C.E.)
39. NASA Astrobiology Institute 7/1/98 - 6/30/99 (year 1 of 5),.
40. Fossil Record of life on land in the Precambrian. NASA Exobiology 6/1/97 -
5/31/00.
41. NASA Astrobiology Institute 7/1/99 - 6/30/00 (year 2 of 5),.
42. NASA Astrobiology Institute 7/1/00 - 6/30/00, (year 3 of 5),.
43. NASA Astrobiology Institute 7/1/01 - 6/30/02, (year 4 of 5),
44. NASA Astrobiology Institute 7/1/02- 10/31/03 (year 5 of 5),
44. Environments of early evolution and the search for an
extraterrestrial fossil record: NASA Exobiology 6/1/00-5/31/03,.
45. Exploring the record of early life on land with applications to the
search for past life on Mars, NASA Exobiology and Evolutionary Biology, 6/1/03
- 5/31/05,.
46. Isotopic Paleotemperatures at key times in the early history of life,
NASA Exobiology and Evolutionary Biology, 5/01/04-4/30/07.
47. Climatic Temperature History of the
Earth, NASA Exobiology and Evolutionary Biology, 6/15/08-6/15/09.
48. Search for Earliest Metazoans, NSF
Geology and Paleobiology, 5/15/09-5/15/10.
Participation in Special Scientific Meetings, Service on Working Groups
(Partial list)
Invited speaker at
Conference on Archean Granites, and Exogenic Processes. Mont. Ste. Marie,
Invited speaker, Penrose Conference on Siliceous Deposits, Vancouver, British
Colombia, 1978.
NASA Workshop on Early Evolution of the Earth's Crust,
Invited speaker, SEPM Conference on 'Stable Isotopes in Sedimentological
Research',
Invited speaker, SEPM Conference on 'Fluid Inclusions in Sedimentary Rock',
Lost Valley Ranch,
Invited speaker, American Chemical Society Symposium on origin and evolution of
subsurface brines,
Nuclear Waste Isolation Workshop on Isotope Hydrology,
Member International Geological Correlation Program (IGCP) Project No. 160:
Precambrian Exogenic Processes.
Member, Surface Processes Working Group, NASA program on Early Evolution of the
Earth'sCrust.
Member, International Geological Correlation Program (IGCP) Project No. 115:
Siliceous Deposits in the Pacific Region.
Attended and gave invited presentation at NASA workshop on preservation of
microorganisms in ancient salt deposits,
Taught 3-day Short Course on "Cherts and other forms of authigenic
silica", ARCO Oil, 1984.
Speaker, Inaugural Meeting "American Current Research on Fluid
Inclusion",
Keynote Speaker, Penrose Conference on "Geochemistry of Oil Field
Brines",
Speaker, Epstein Symposium, on Stable Isotope Geochemistry, California
Institute of Technology, 1989.
Taught Short Course on Isotopic Hydrogeology, Salt River Project Utility
Company,
Speaker: Karst Waters Symposium: Breakthroughs in Karst Geomicrobiology and
Redox Geochemistry,
Review Panel for Department of Energy High-Level Nuclear Waste Repository Site
Characterization Documents (Argonne National Labs, 1986-1994).
Member, Risk Abatement Panel; Department of Energy Strategic Petroleum Reserve,
Expert Witness before Texas Water commission regarding application of Hunter
Industries to put toxic waste in Dayton Salt Dome, August 1992.
Review Panel member, NASA Exobiology Program 1997, 1998
Member, NASA Astrobiology Institute 1999-present
Invited speaker, Gordon Research Conference on "Origin of Life",
2000, Plymouth, New Hampshire
Invited speaker, Hudnall Symposium in Honor of Robert N. Clayton, June 7-8,
2001.
Plenary Speaker, Second Atrobiology Science Conference, April 10-12,
2002, Carnegie Inst. of Washington, Washington, DC.
Plenary Speaker, Astrobiology Science Conference, April 7-11, 2002,
Participant and speaker: NASA Astrobiology Institute Field Conference on
Archean Surface Processes, 2003,
Participant and speaker: NASA Astrobiology Institute Field Conference, (2005)
Life in the Pilbara and the search for life on Mars,
Participant: Pale Blue Dot III,
Searching for life on distant worlds.
Adler Planetarium,
Senior Lecturer: NASA Astrobiolog Institute Field Workshop Biosignatures in
Ancient Rocks, September 16-27, 2007.
Sudbury to Thunder Bay, Ontario, Canada
2008 Participant, Variable Atmospheric Laboratory Workshop. 2/23-2/24. Arizona State University