David Spears
Division of Geology and Mineral Resour, Charlottesville, VA
Activity
2022
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NEW DIGITAL GEOLOGIC MAP OF VIRGINIA COMPLETED AS A LEVEL 2 GEMS GEODATABASE
21 Geologic Maps, Geophysical Maps, 3-D Geological Models, Digital Mapping Techniques, Map Derivatives, and Digital Map Preparation (Posters)Thursday, 7 April 20221:30 PM - 5:30 PMJunior Ballroom B
2021
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U.S. MINERALS POLICY AND THE RISE OF THE CRITICAL MINERALS AGENDA
T149 That Signpost up Ahead: At the Crossroads of Geoscience and Society—A Public Policy Perspective ITuesday, 12 October 20218:00 AM - 12:00 PMB112
2020
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GEOTRAVERSE ALONG THE NOTTOWAY RIVER IN SOUTHEASTERN VIRGINIA: NEW COOPERATIVE GEOLOGIC MAPPING ON THE WEST HALF OF THE EMPORIA 30X60-MINUTE QUADRANGLE
49 Geologic Maps, Digital Geologic Maps, Geophysical Maps, and Derivatives from Geologic and Geophysical Maps (Posters)Saturday, 21 March 20201:30 PM - 5:30 PMGrand Ballroom A–D
2018
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RESULTS FROM AGE-DATING AND PALEOSEISMIC TRENCHING ALONG THE LAKESIDE AND LITTLE FORK CHURCH FAULTS IN THE CENTRAL VIRGINIA SEISMIC ZONE
22 Seismic Hazards in the Eastern United StatesFriday, 13 April 20188:00 AM - 12:00 PMRoom 300 D
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GEOCHRONOLOGY OF THE ELK HILL COMPLEX AND LAKESIDE FAULT ZONE, CENTRAL VIRGINIA PIEDMONT
2 Longstanding Problems and New Ideas About the Structure and Tectonic Evolution of the Southern Appalachians and Other Mountain Belts I: In Honor of the Career of Robert D. Hatcher Jr.Thursday, 12 April 20188:00 AM - 12:00 PMRoom 301 C
2017
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GEOCHEMICAL DATABASE WITH GENERALIZED INTERPRETATION FOR IGNEOUS ROCKS FROM THE CENTRAL APPALACHIANS OF VIRGINIA, MARYLAND, AND PENNSYLVANIA
23 Petrology and Planetary Geology (Posters)Friday, 31 March 20178:00 AM - 12:00 PMJames River Ballroom
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NEW SHRIMP U-PB ZIRCON DATA FROM THE CENTRAL VIRGINIA PIEDMONT
20 Tectonics of Blue Ridge and Piedmont Terranes: Insight from Integrated Studies (Posters)Friday, 31 March 20178:00 AM - 12:00 PMJames River Ballroom
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PROGRESS OF USGS BEDROCK GEOLOGIC MAPPING IN THE CENTRAL VIRGINIA SEISMIC ZONE
21 Geologic Maps and Map Derivatives: The Legacy of Mike Higgins (Posters)Friday, 31 March 20178:00 AM - 12:00 PMJames River Ballroom
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TECTONOTHERMAL SIGNATURES OF TACONIAN AND ALLEGHANIAN OROGENESIS IN THE CENTRAL VIRGINIA SEISMIC ZONE
10 Deciphering Metamorphic Histories in Multiply-Deformed Terranes in the Piedmont and Blue RidgeThursday, 30 March 20171:00 PM - 5:00 PMPotomac E
2016
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U-PB DETRITAL ZIRCON GEOCHRONOLOGY OF TERRANES IN THE CENTRAL VIRGINIA PIEDMONT
9 Evolving Perspectives on Piedmont Geology: Terrane Studies, Structural Analyses, New Mapping, and Complementary Studies (Posters)Thursday, 31 March 20168:00 AM - 5:30 PMExhibit Hall
2015
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CORRELATING TERRANES AND THERMOTECTONIC HISTORIES OF CENTRAL VIRGINIA AND NORTHERN VIRGINIA AND MARYLAND, USA
T75 Rift-Drift, Seafloor Spreading, and Subduction Zone Tectonics of Collisional Orogens: Comparative Analysis of the Circum-Mediterranean and Appalachian-Caledonian Orogenic BeltsSunday, 1 November 20151:30 PM - 5:30 PMRoom 341
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ELK HILL VOLCANIC COMPLEX, AN ARC FRAGMENT IN THE CENTRAL VIRGINIA PIEDMONT
10 Structural Geology and Tectonics (Posters)Thursday, 19 March 20158:00 AM - 12:00 PMBallroom
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NEW GEOLOGIC MAPPING AND GEOPHYSICAL SURVEYS IN THE EPICENTRAL REGION OF THE 2011 MINERAL, VIRGINIA EARTHQUAKE
20 Geologic Maps, Geophysical Maps, Digital Geologic Maps, and Derivatives from Geologic and Geophysical Maps (Posters)Thursday, 19 March 20151:00 PM - 5:00 PMBallroom
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TACONIAN OROGENESIS AND ALLEGHANIAN OVERPRINTING IN CENTRAL VIRGINIA PIEDMONT AS REVEALED BY NEW 40AR/39AR DATA
16 Ordovician Tectonics of the Appalachians: New Ideas on an Ancient OrogenThursday, 19 March 20151:00 PM - 5:00 PMRoberts
2014
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MAGNETIC AND GRAVITY ANOMALIES REVEAL GEOLOGIC FEATURES ASSOCIATED WITH THE 2011 MW5.8 MINERAL, VIRGINIA EARTHQUAKE
T15 Magnetic Surveys for Imaging the Geology of Earth and Other Planetary Bodies: A Session Honoring the Legacy of Isidore ZietzSunday, 19 October 20148:00 AM - 12:00 PM119/120
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ASSOCIATION OF MODERN SEISMICITY WITH PALEOZOIC CROSS-STRIKE STRUCTURES IN THE CENTRAL VIRGINIA SEISMIC ZONE
3 Lessons Learned from the 2011 Virginia EarthquakeThursday, 10 April 20148:00 AM - 12:00 PMAssembly Hall
2013
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GEOLOGY OF THE PENDLETON QUADRANGLE, VIRGINIA, WITH NOTES ON THE AUGUST 2011 MINERAL EARTHQUAKE
T146 Geologic Maps and Their Derivatives (Posters)Monday, 28 October 20139:00 AM - 6:30 PMHall D
2012
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PRELIMINARY FINDINGS FROM RECENT GEOLOGIC MAPPING IN THE CENTRAL VIRGINIA SEISMIC ZONE
T252 Central Virginia Earthquakes of 2011: Geology, Geophysics, and Significance for Seismic Hazards in Eastern North America (Posters)Wednesday, 7 November 20129:00 AM - 6:00 PMHall B
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MIDDLE MIOCENE DINOFLAGELLATES DEMONSTRATE THE PRESENCE OF UPPER CHOPTANK MARINE BEDS BENEATH THE MIDLOTHIAN GRAVELS IN SOUTHERN VIRGINIA
T226 Mid-Atlantic Coastal Plain Stratigraphy and PaleontologyWednesday, 7 November 20128:00 AM - 12:00 PM203A
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GEOLOGIC FRAMEWORK OF THE CENTRAL VIRGINIA SEISMIC ZONE
5 The August 23, 2011 Virginia Mw5.8 Earthquake: Highlighting Earthquake Hazards Throughout the Southeastern United StatesSunday, 1 April 20128:00 AM - 12:00 PMGrand Ballroom, Salon C1
2010
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NEW FINDINGS FROM OLD ROCKS: GEOLOGY OF THE LAKESIDE VILLAGE QUADRANGLE, CENTRAL VIRGINIA PIEDMONT
T108 Geologic Maps, Digital Geologic Maps, and Derivatives from Geologic and Geophysical Maps (Posters)Monday, 1 November 20108:00 AM - 6:00 PMHall D
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LEGISLATIVE AND REGULATORY FRAMEWORK OF OFFSHORE ENERGY RESOURCES – SCIENCE AND SENSE IN THE MAKING OF PUBLIC POLICY
8 Energy Resources in the Eastern United States and Associated Environmental EffectsSunday, 14 March 20108:00 AM - 12:05 PMPratt A/B
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FAULT-BOUNDED BLOCKS OF UNCERTAIN AFFINITY ASSOCIATED WITH THE GOOCHLAND-CHOPAWAMSIC TERRANE BOUNDARY, CENTRAL VIRGINIA PIEDMONT
22 Structural Geology and Tectonics (Posters)Sunday, 14 March 20101:30 PM - 4:15 PMInternational ABCDF
2004
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THE PAST, PRESENT, AND FUTURE OF COALBED METHANE DEVELOPMENT IN VIRGINIA
6 Geological Carbon Sequestration, Coalbed Gas Resources, and Future PotentialThursday, 25 March 20048:00 AM - 12:00 PM