2011 GSA Annual Meeting in Minneapolis (9–12 October 2011)
Session No. 237 Wednesday, 12 October 2011
8:00 AM-12:00 PM, Minneapolis Convention Center: Room 102D-F

T128. EARTHTIME Geochronology: Improving Age Interpretations through Integration and Intercalibration

M.D. Schmitz, Linda A. Hinnov and Blair Schoene, Presiding
 Paper #Start Time
237-18:00 AM COUPLING ORBITAL AND RADIOISOTOPIC CHRONOMETERS: LESSONS LEARNED FROM THE CRETACEOUS WESTERN INTERIOR BASIN (U.S.A.): MEYERS, Stephen R., Department of Geoscience, University of Wisconsin, 1215 West Dayton St, Madison, WI 53076, smeyers@geology.wisc.edu, SINGER, Brad S., Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53076, SIEWERT, Sarah E., Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706, SAGEMAN, Bradley B., Earth and Planetary Sciences, Northwestern University, 1850 Campus Drive, Evanston, IL 60208, CONDON, Daniel, NERC Isotope Geoscience Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, JICHA, Brian R., Department of Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706, SAWYER, David A., USGS, MS 980, Box 25046, Denver, CO 80225, and OBRADOVICH, John D., U.S. Geological Survey, MS 980, Box 25046, Denver, CO 80225
237-28:20 AM HIGH PRECISION RADIO ISOTOPIC AGE CONSTRAINTS ON THE LATE EOCENE – EARLY OLIGOCENE GEOMAGNETIC POLARITY TIME SCALE: SAHY, Diana1, FISCHER, Anne2, CONDON, Daniel1, TERRY, Dennis O. Jr3, HIESS, Joe1, ABELS, Hemmo A.4, HUESING, Silja K.5, and KUIPER, Klaudia2, (1) NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, dihy@bgs.ac.uk, (2) Faculty of Earth and Life Sciences, Vrije Universiteit, 1085 De Boelelaan, Amsterdam, 1081 HV, Netherlands, (3) Earth and Environmental Science, Temple University, Philadelphia, PA 19122, (4) Department of Earth Sciences, Utrecht University, Budapestlaan 4, Utrecht, 3584 CD, Netherlands, (5) Department of Earth Sciences, Utrecht University, Budapestlaan 17, Utrecht, 3584 CD, Netherlands
237-38:35 AM A CRETACEOUS TO PLEISTOCENE PERSPECTIVE ON INTERCALIBRATING 40Ar/39Ar AND U-PB RADIOISOTOPIC CLOCKS: SINGER, Brad S., Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53076, bsinger@geology.wisc.edu, CONDON, Daniel, NERC Isotope Geoscience Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, JICHA, Brian R., Department of Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706, KUIPER, Klaudia, Faculty of Earth and Life Sciences, Vrije Universiteit, 1085 De Boelelaan, Amsterdam, 1081 HV, Netherlands, SIEWERT, Sarah E., Geoscience, University of Wisconsin-Madison, 1215 West Dayton St, Madison, WI 53076, MEYERS, Stephen R., Department of Geoscience, University of Wisconsin, 1215 West Dayton St, Madison, WI 53076, SAGEMAN, Bradley B., Earth and Planetary Sciences, Northwestern University, 1850 Campus Drive, Evanston, IL 60208, SAWYER, David A., USGS, MS 980, Box 25046, Denver, CO 80225, and OBRADOVICH, John D., U.S. Geological Survey, MS 980, Box 25046, Denver, CO 80225
237-48:50 AM U-PB AND AR/AR DATING OF THE CRETACEOUS-PALEOGENE BOUNDARY INTERVAL IN EASTERN MONTANA: MITCHELL, William S. III1, RENNE, Paul R.2, MUNDIL, Roland2, DEINO, Alan L.2, KUIPER, Klaudia F.3, and SMIT, Jan3, (1) Department of Chemistry, University of California Berkeley, Berkeley, CA 94720, bill.mitchell@berkeley.edu, (2) Berkeley Geochronology Ctr, 2455 Ridge Rd, Berkeley, CA 94709-1211, (3) Faculty of Earth Sciences, Free University of Amsterdam, De Boelelaan 1085, Amsterdam, 1081 HV, Netherlands
237-59:05 AM TESTING GLOBAL CORRELATIONS IN THE JURASSIC TOARCIAN STAGE WITH U-PB ZIRCON AND CHEMOSTRATIGRAPHY: SELL, Bryan, Section of Earth & Environmental Sciences, University of Geneva, Rue des Maraîchers 13, Geneva, CH-1205, Switzerland, Bryan.Sell@unige.ch, BARTOLINI, Anachiara, Histoire de la Terre, Muséum National d'Histoire Naturelle, CP 38 CR2P UMR 7207 du CNRS, 8 Rue Buffon, Paris, 75005, France, GUEX, Jean, Institute of Geology, University of Lausanne, UNIL-Dorigny, Bâtiment Anthropole 3182, Lausanne, 1015, Switzerland, SPANGENBERG, Jorge, Institute of Geochemistry, University of Lausanne, UNIL-Dorigny, Bâtiment Anthropole 3182, Lausanne, 1015, Switzerland, VICENTE, J-C., Laboratoire de Tectonique, Université P. & M. Curie-Paris 6 Case 129, Case 129, F, Paris, 75252, France, and SCHALTEGGER, Urs, Earth Sciences, University of Geneva, Rue des Maraîchers 13, Geneva, CH-1205, Switzerland
237-69:20 AM PRECISION IN CARBON ISOTOPE STRATIGRAPHY—THE IMPORTANCE OF SAMPLING INTERVAL IN RECOGNIZING FORM AND RATES: MCLAUGHLIN, Patrick I., Bedrock Division, Wisconsin Geological and Natural History Survey, 3817 Mineral Point Rd, Madison, WI 53705-5100, pimclaughlin@wisc.edu, SELL, Bryan, Section of Earth & Environmental Sciences, University of Geneva, Rue des Maraîchers 13, Geneva, CH-1205, Switzerland, EMSBO, Poul, Denver Inclusion Analysis Laboratory, USGS, Ms-973, Box 25046, Denver, CO 80225, and EMERSON, Norlene R., Department of Geography and Geology, University of Wisconsin - Richland, 1200 Hwy 14 West, Richland Center, WI 53581
237-79:35 AM TIERED INTERPOLATION OF RADIOISOTOPIC AND BIOSTRATIGRAPHIC GEOCHRONOLOGY RESOLVES THE TEMPO OF THE ORDOVICIAN ICEHOUSE TO GREENHOUSE TRANSITION: SMITH, M. Elliot, Geology, Sonoma State University, 1801 E Cotati Ave, Rohnert Park, CA 94928, michael.smith@sonoma.edu, SINGER, Brad S., Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53076, and SIMO, Toni, Upstream Research, ExxonMobil, P.O.Box 2189, Houston, TX 77252-2189
237-89:50 AM U-PB CHRONOLOGY OF THE EDIACARAN GEOLOGY AND ASSOCIATED FOSSILS OF CHARNWOOD FOREST, UK: NOBLE, Stephen R.1, CARNEY, John N.2, and CONDON, Daniel1, (1) NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, srn@bgs.ac.uk, (2) British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom
 10:05 AM Break
237-910:20 AM EXTRAPOLATING NUMERICAL AGES FOR THE MESOZOIC GEOLOGIC TIMESCALE – A STATUS REPORT: OGG, James G., Earth and Atmospheric Sciences, Purdue Univ, 550 Stadium Mall Drive, West Lafayette, IN 47907-2051, jogg@purdue.edu
237-1010:40 AM THE DIGITAL INTEGRATED STRATIGRAPHY PROJECT (DISP): QUANTIFYING THE DEEP TIME HIGH-RESOLUTION CHRONOSTRATIGRAPHIC REVOLUTION: MUNNECKE, Axel1, CRAMER, Bradley D.2, SÖDERLUND, Ulf3, AIKEN, Carlos L.V.4, SCHOFIELD, D.I.5, KHARWAT, Ranyah6, and BOON, D.5, (1) GeoZentrum Nordbayern, Fachgruppe Paläoumwelt, Universität Erlangen, Loewenichstrasse 28, Erlangen, D-91054, Germany, (2) Kansas Geological Survey/Department of Geology, University of Kansas, 1930 Constant Avenue, Lawrence, KS 66047, cramerbd@gmail.com, (3) Earth and Ecosystem Sciences, Lund University, Lund, S-223 62, Sweden, (4) Geosciences, University of Texas at Dallas, 800 West Campbell Rd, Richardson, TX 75080, (5) British Geological Survey, Kingsley Dunham Centre, Keyworth, Nottingham, NG12 5GG, United Kingdom, (6) Geosciences and Arts and Technology, The University of Texas at Dallas, 800 W. Campbell Rd, Richardson, TX 75080-3021
237-1110:55 AM THE DIGITAL INTEGRATED STRATIGRAPHY PROJECT (DISP): A WEB BASED OPEN-ACCESS DIGITAL RESOURCE FOR EARTHTIME: KHARWAT, Ranyah1, AIKEN, Carlos L.V.2, MUNNECKE, Axel3, BOON, D.4, SCHOFIELD, D.I.4, and CRAMER, Bradley D.5, (1) Geosciences and Arts and Technology, The University of Texas at Dallas, 800 W. Campbell Rd, Richardson, TX 75080-3021, ranyah.k@gmail.com, (2) Geosciences, University of Texas at Dallas, 800 West Campbell Rd, Richardson, TX 75080, (3) GeoZentrum Nordbayern, Fachgruppe Paläoumwelt, Universität Erlangen, Loewenichstrasse 28, Erlangen, D-91054, Germany, (4) British Geological Survey, Kingsley Dunham Centre, Keyworth, Nottingham, NG12 5GG, United Kingdom, (5) Kansas Geological Survey/Department of Geology, University of Kansas, 1930 Constant Avenue, Lawrence, KS 66047
237-1211:10 AM SPATIALLY SELECTIVE URANIUM SERIES GEOCHRONOLOGY OF ACCESSORY MINERALS AND THE DURATION OF MAGMATIC CRYSTALLIZATION: SCHMITT, A.K., Earth and Space Sciences, University of California, 595 Charles Young Dr E, Los Angeles, CA 90095, axel@argon.ess.ucla.edu
237-1311:30 AM INTEGRATING GEOCHEMISTRY, THERMOMETRY AND ISOTOPE RATIOS TO IMPROVE AGE INTERPRETATION THROUGH TANDEM QUADRUPOLE LA-ICPMS AND CA-TIMS ON THE SAME ZIRCON CRYSTALS: SCHMITZ, M.D.1, OLIN, Paul H.2, and CROWLEY, James L.1, (1) Department of Geosciences, Boise State University, Boise, ID 83725, markschmitz@boisestate.edu, (2) Geosciences, Boise State University, 1910 University Drive, Geosciences Dept, Boise, ID 83725-1535
237-1411:45 AM RETENTION OF INHERITED ARGON IN ALKALI FELDSPAR XENOCRYSTS: CONSTRAINTS FROM BA DIFFUSION PROFILES: RENNE, Paul R.1, MULCAHY, Sean R.2, CASSATA, William S.2, MORGAN, Leah E.2, HLUSKO, Leslea J.3, and NJAU, Jackson K.3, (1) Berkeley Geochronology Ctr, 2455 Ridge Rd, Berkeley, CA 94709-1211, prenne@bgc.org, (2) University of California, Dept. of Earth and Planetary Science, Berkeley, CA 94720, (3) University of California, Human Evolution Research Center, Berkeley, CA 94720

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