2006 Philadelphia Annual Meeting (22–25 October 2006)

Session No. 216
Wednesday, 25 October 2006: 1:30 PM-5:30 PM

T36. Surficial Processes at the Hyperarid Limit: Current Research in the Atacama Desert, Chile II

GSA Geobiology & Geomicrobiology Division

 

Jason A. Rech, Ronald G. Amundson and Gregory D. Hoke, Advocates
Paper #
Start Time
1
1:30 PM
LOW LEVELS OF LIFE IN THE HYPERARID CORE OF THE ATACAMA DESERT
MCKAY, Christopher P., Space Science Division, NASA Ames Rsch Ctr, Mail Stop 245-3, Moffett Field, CA 94035-1000, cmckay@mail.arc.nasa.gov, cmckay@mail.arc.nasa.gov
2
1:50 PM
BACTERIAL COMMUNITY STRUCTURE OF SOILS OF A HYPER-ARID REGION OF THE ATACAMA DESERT, CHILE
NEILSON, Julia W.1, DREES, Kevin P.2, BETANCOURT, Julio L.3, QUADE, Jay4 and MAIER, Raina M.1, (1)Soil Water and Environmental Science, University of Arizona, Shantz Building Room 429, PO Box 210038, Tucson, AZ 85721, (2)Department of Civil Engineering, University of Minnesota, Minneapolis, MN 55455, (3)Desert Laboratory, U.S. Geol Survey, 1675 W. Anklam Rd, Tucson, AZ 85745, (4)Department of Geosciences, University of Arizona, Tucson, AZ 85721, jneilson@ag.arizona.edu, jneilson@ag.arizona.edu
3
2:05 PM
ENDOLITHIC CYANOBACTERIA IN SOIL SULFATES FROM HYPERARID ENVIRONMENTS ON EARTH
DONG, Hailiang1, RECH, Jason A.1, JIANG, Hongchen1, SUN, Henry2 and BUCK, Brenda J.3, (1)Department of Geology, Miami University, 114 Shideler Hall, Oxford, OH 45056, (2)Desert Research Institute, 755 E. Flamingo Rd, Las Vegas, NV 89119, (3)Geoscience, Univ of Nevada, Las Vegas, Box 4010 Lilly Fong Hall, 4505 Maryland Parkway, Las Vegas, NV 89154, dongh@muohio.edu, dongh@muohio.edu
4
2:20 PM
FOCUSED GROUNDWATER FLOW AND THE ACCUMULATION OF GIANT SALT DEPOSITS IN THE SALAR DE ATACAMA
GODFREY, Linda V., Institute of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road, New Brunswick, NJ 08901 and JORDAN, Teresa E., Department of Earth and Atmospheric Sciences, Cornell University, Snee Hall, Ithaca, NY 14853, godfrey@imcs.rutgers.edu, godfrey@imcs.rutgers.edu
 
2:35 PM
Break
5
2:50 PM
SOILS AT THE HYPERARID MARGIN: THE ISOTOPIC COMPOSITION OF SOIL CARBONATE FROM THE ATACAMA DESERT
QUADE, Jay, Department of Geosciences, The Univ of Arizona, Tucson, AZ 85721, RECH, Jason, Department of Geology, Miami University, Oxford, OH 45056, LATORRE, Claudio H., Departmento de Ecologia, Universidad Catolica de Chile, Santiago, 114-D, Chile and BETANCOURT, Julio, U. S. Geological Survey, 1675 W. Anklam Road, Tucson, AZ 85745, jquade@geo.arizona.edu, jquade@geo.arizona.edu
6
3:05 PM
TRANSFORMATION OF THE SOIL N CYCLE AT THE ARID-HYPERARID TRANSITION ON EARTH
EWING, Stephanie A., Division of Ecosystem Sciences, University of California, Berkeley, 137 Mulford Hall, Berkeley, CA 94720, MICHALSKI, Greg, Earth and Atmospheric Sciences, Purdue University, 50 Stadium Mall Drive, West Lafayette, IN 47907, THIEMENS, Mark, Chemistry and Biochemistry, Univ of California at San Diego, La Jolla, CA 92093, MACALADY, Jennifer, Geosciences, Pennsylvania State University, 210 Deike Building, University Park, PA 16802, MCKAY, Christopher P., NASA-Ames Research Center, Moffett Field, CA 94035 and AMUNDSON, Ronald, Division of Ecosytem Sciences, University of California, 137 Mulford Hall, Berkeley, CA 94720, saewing@nature.berkeley.edu, saewing@nature.berkeley.edu
7
3:20 PM
PHYLLOSILICATE MINERALOGY OF ATACAMA DESERT SOILS: INSIGHT INTO ATACAMA SOIL FORMATION PROCESSES
SUTTER, Brad, NASA-Ames Rsch Ctr, MS 245-3, Moffett Field, CA 94035, AMUNDSON, Ronald, Division of Ecosystem Sciences, University of California, Berkeley, 137 Mulford Hall, Berkeley, CA 94720 and OWEN, Justine, ESPM, Division of Ecosytem Sciences, University of California, Berkeley, 137 Mulford Hall #3114, Berkeley, CA 94720-3114, bsutter@mail.arc.nasa.gov, bsutter@mail.arc.nasa.gov
8
3:35 PM
A NEW FORMATION PROCESS FOR PATTERNED GROUND, ATACAMA DESERT, CHILE
BUCK, Brenda J.1, RECH, Jason2, HOWELL, Michael1, PRELLWITZ, Joel2 and BROCK, Amy L.1, (1)Geoscience, Univ of Nevada, Las Vegas, Box 4010 Lilly Fong Hall, 4505 Maryland Parkway, Las Vegas, NV 89154, (2)Department of Geology, Miami University, Oxford, OH 45056, buckb@unlv.nevada.edu, buckb@unlv.nevada.edu
9
3:50 PM
ASSESSING CATION DEPOSITION AND REMOBILIZATION IN ARID SOILS OF THE ATACAMA DESERT, CHILE
HYNICKA, Justin D.1, STEWART, Brian W.1, EWING, Stephanie A.2 and AMUNDSON, Ronald2, (1)Department of Geology & Planetary Science, University of Pittsburgh, Pittsburgh, PA 15260, (2)Division of Ecosystem Sciences, University of California, Berkeley, 137 Mulford Hall, Berkeley, CA 94720, jdh21@pitt.edu, jdh21@pitt.edu
10
4:05 PM
MID-MIOCENE NITRATE PALEOSOLS FROM THE ATACAMA DESERT: IMPLICATIONS FOR THE ANTIQUITY OF THE ATACAMA DESERT
RECH, Jason A., CURRIE, Brian S. and COWAN, Angela M., Department of Geology, Miami University, 114 Shideler Hall, Oxford, OH 45056, rechja@muohio.edu, rechja@muohio.edu
 
4:20 PM
Concluding Remarks
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