D.A. Sawyer
USGS, Denver, CO
Activity
2012
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THE CRETACEOUS TIME SCALE: PROGRESS AND PROSPECTS FROM RADIOISOTOPIC DATING AND ASTROCHRONOLOGY
T250 Geologic Timescale—Current Status, Future Enhancement, and Applications (Posters)Wednesday, 7 November 20129:00 AM - 6:00 PMHall B
2011
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COUPLING ORBITAL AND RADIOISOTOPIC CHRONOMETERS: LESSONS LEARNED FROM THE CRETACEOUS WESTERN INTERIOR BASIN (U.S.A.)
T237 EARTHTIME Geochronology: Improving Age Interpretations through Integration and IntercalibrationWednesday, 12 October 20118:00 AM - 12:00 PMRoom 102D-F
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A CRETACEOUS TO PLEISTOCENE PERSPECTIVE ON INTERCALIBRATING 40Ar/39Ar AND U-PB RADIOISOTOPIC CLOCKS
T237 EARTHTIME Geochronology: Improving Age Interpretations through Integration and IntercalibrationWednesday, 12 October 20118:00 AM - 12:00 PMRoom 102D-F
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CERROS DEL RIO VOLCANIC FIELD—LINKS TO THE GEOLOGY OF BANDELIER NATIONAL MONUMENT
T113 Geology in the National Parks: Research, Mapping, Outreach, and Resource Management (Posters)Monday, 10 October 20119:00 AM - 6:00 PMHall C
2010
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AT THE INTERFACE OF BIOSTRATIGRAPHY AND ISOTOPIC GEOCHRONOLOGY—EXPLORING THE CRETACEOUS WORLD
T160 Geochronology of the American West: In Honor of the Careers of Bill Cobban and John Obradovich and the Roots of EARTHTIMETuesday, 2 November 20108:00 AM - 12:00 PMRoom 205
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INTEGRATING RADIOISOTOPIC AND ASTROCHRONOLOGIC TIME SCALES FOR THE CRETACEOUS
T160 Geochronology of the American West: In Honor of the Careers of Bill Cobban and John Obradovich and the Roots of EARTHTIMETuesday, 2 November 20108:00 AM - 12:00 PMRoom 205
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40Ar/39Ar AND U-PB DATING OF THE CRETACEOUS NIOBRARA FORMATION
T160 Geochronology of the American West: In Honor of the Careers of Bill Cobban and John Obradovich and the Roots of EARTHTIMETuesday, 2 November 20108:00 AM - 12:00 PMRoom 205
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REDUCING ERROR BARS THROUGH THE INTERCALIBRATION OF RADIOISOTOPIC AND ASTROCHRONOLOGIC TIME SCALES FOR THE CENOMANIAN/TURONIAN BOUNDARY INTERVAL, WESTERN INTERIOR BASIN, USA
T160 Geochronology of the American West: In Honor of the Careers of Bill Cobban and John Obradovich and the Roots of EARTHTIMETuesday, 2 November 20108:00 AM - 12:00 PMRoom 205
2009
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IMPLICATIONS OF NEW 40Ar/39Ar AND U-PB AGES FOR CENOMANIAN-TURONIAN OAE2
T160 EARTHTIME: From Developing Tools to Teaching about TimeTuesday, 20 October 20098:00 AM - 12:00 PMC123
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A MAP DATABASE OF ISOTOPICALLY DATED CRETACEOUS BENTONITE LOCALITIES IN THE WESTERN INTERIOR U.S
T101 Geologic Maps, Digital Geologic Maps, Geophysical Maps, and Derivatives from Geologic Maps (Posters)Monday, 19 October 20099:00 AM - 6:00 PMHall A
2007
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RETHINKING AN ARCHETYPE OF RIFT HALF-GRABEN FORMATION—A REVISED MODEL OF BASIN GEOMETRY FOR THE ALBUQUERQUE SEGMENT OF THE RIO GRANDE RIFT, NEW MEXICO
T134 New Perspectives on the Rio Grande Rift: From Tectonics to GroundwaterTuesday, 30 October 20078:00 AM - 12:00 PM
2006
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TEMPORAL, STRATIGRAPHIC AND STRUCTURAL CONTROLS ON THE EVOLUTION OF THE CERROS DEL RIO VOLCANIC FIELD, NORTHERN RIO GRANDE RIFT, NEW MEXICO
18 Structural, Stratigraphic, and Igneous Evolution of the Rio Grande Rift SystemFriday, 19 May 20069:00 AM - 11:40 AM
2005
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INTEGRATED GEOLOGIC FRAMEWORK STUDIES IN THE ESPAÑOLA BASIN, RIO GRANDE RIFT, NORTH-CENTRAL NEW MEXICO
T59 Innovations in Geological Mapping (Posters)Sunday, 16 October 20051:30 PM - 5:30 PM
2002
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AEROMAGNETIC EXPRESSION OF VOLCANIC ROCKS OF THE CERROS DEL RIO VOLCANIC FIELD, RIO GRANDE RIFT, NORTH-CENTRAL NEW MEXICO
T198 New Views of Extensional Basins and Related Volcanic Fields Using Geophysics and Remote Sensing (Posters)Wednesday, 30 October 20028:00 AM - 12:00 PM
2001
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GEOLOGIC FRAMEWORK OF THE NORTHERN SANTO DOMINGO BASIN: STRUCTURAL OVERLAP OF THE LA BAJADA AND PAJARITO FAULT ZONES
16 Geologic Framework of the Middle Rio Grande BasinWednesday, 2 May 20018:10 AM - 12:00 PM
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DIGITAL GEOLOGIC MAP AND DATABASE OF THE COLLIER DRAW-BENAVIDEZ RANCH QUADS, NEW MEXICO
23 Geophysics of the Rio Grande Rift and Southern Rocky MountainsWednesday, 2 May 20011:10 PM - 5:00 PM
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GEOLOGIC FRAMEWORK FOR GROUND-WATER MODELING, MIDDLE RIO GRANDE BASIN, NEW MEXICO
1 Hydrogeology of the Middle Rio Grande BasinMonday, 30 April 20018:00 AM - 12:00 PM
Date Unknown
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ANALYSIS OF LANDSAT 7 IMAGERY FOR GEOLOGIC MAPPING IN NEW MEXICO
T123 Applications and New Opportunities in Geologic Remote Sensing (Posters)
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REVISED 40AR/39AR GEOCHRONOLOGY OF THE JEMEZ AND CERROS DEL RIO VOLCANIC FIELDS, NM
T182 New Perspectives on the Rio Grande Rift: From Tectonics to Groundwater (Posters)
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CORRELATION OF MAGNETOTELLURIC RESISTIVITY SOUNDINGS AND REGIONAL BOREHOLE GEOPHYSICAL ROCK PROPERTIES TO STRATIGRAPHY OF THE NORTHERN RIO GRANDE RIFT, NEW MEXICO
T182 New Perspectives on the Rio Grande Rift: From Tectonics to Groundwater (Posters)
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CROSS SECTION OF UPPER CRETACEOUS ROCKS (DAKOTA SANDSTONE-POINT LOOKOUT SANDSTONE) FROM GALLUP TO LAMY, NORTHERN NEW MEXICO
152 Paleontology (Posters) II: Biogeography/Biostratigraphy
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SPECTRAL CHARACTERISTICS OF CRETACEOUS ROCKS OF THE ALBUQUERQUE BASIN, NEW MEXICO
88 Remote Sensing/Geographic Info System (Posters)
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GEOLOGY AND GEOCHRONOLOGY OF THE CERROS DEL RIO VOLCANIC FIELD, NEW MEXICO
4 General Geology and Rio Grande Rift (Posters)
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INTEGRATION OF GEOLOGIC MAPPING, GEOCHRONOLOGY, PALEOMAGNETISM AND AEROMAGNETIC MAPPING IN THE CERROS DEL RIO VOLCANIC FIELD, RIO GRANDE RIFT, NEW MEXICO
T30 The National Geologic Map Database (Posters)
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VOLCANISM AND EXTENSIONAL TECTONISM OF THE SOUTHWESTERN ESPAÑOLA BASIN, NORTHERN RIO GRANDE RIFT, NEW MEXICO
T182 New Perspectives on the Rio Grande Rift: From Tectonics to Groundwater (Posters)