R.J. Tracy
Virginia Tech, Blacksburg, VA
Activity
2019
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METAMORPHIC PATHS RECORD THE CONTRACTION AND THE EXTENSION THAT LED TO FORMATION OF THE DEATH VALLEY TURTLEBACKS
T77 A Life in Mineralogy and Petrology: A Session in Honor of Robert J. TracyMonday, 23 September 20198:00 AM - 12:00 PMRoom 126ABC, North Building
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CHEMICAL ZONING IN GARNET AS EVIDENCE FOR THE RAPID EXHUMATION OF UHP ROCKS
T77 A Life in Mineralogy and Petrology: A Session in Honor of Robert J. TracyMonday, 23 September 20198:00 AM - 12:00 PMRoom 126ABC, North Building
2018
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REAPPRAISAL OF THE DEATH VALLEY TURTLEBACKS FROM ANALYSIS OF METAMORPHISM AND DUCTILE DEFORMATION IN THE TURTLEBACKS AND PANAMINT MOUNTAINS
18 Tectonics of the Death Valley Region III: A Tribute to Bennie Troxel and Lauren WrightTuesday, 15 May 20181:30 PM - 3:15 PMCanyon Room
2016
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QUARTZ-CORDIERITE GNEISS IN SOUTHERN WYOMING PROVINCE SHEAR ZONES: MONAZITE GROWTH RECORDS MG-METASOMATISM DURING NEOARCHEAN ASSEMBLY OF NORTH AMERICA
T204 Proterozoic Accretion of the North American Continent – United Plates of America Revisited ITuesday, 27 September 20168:00 AM - 12:00 PMMile High Ballroom 3B
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HIGH-RESOLUTION IMAGING OF GARNET GROWTH ZONING IN METAPELITES: CAN IT INFORM US ABOUT GROWTH PROCESSES?
T108 Fifty Years of Innovation in Petrology and Orogenic Systems I: A Tribute to Lincoln HollisterMonday, 26 September 20168:00 AM - 12:00 PMRoom 205
2015
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HYBRID IGNEOUS ROCKS AND THE PRESERVATION OF EVIDENCE OF DEEP-CRUSTAL UHT METAMORPHISM
34 Metamorphism from Zeolite Facies to UHP and UHT with Emphasis on Models for Predicting Metamorphic Mineral StabilityFriday, 20 March 20151:00 PM - 5:00 PMRose
2014
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TWO-STAGE DEFORMATION, AND TWO STYLES OF LOCALIZATION, IN A DEEP CRUSTAL NORMAL SENSE SHEAR ZONE: MOUNT HAY BLOCK, CENTRAL AUSTRALIA
T91 Deformation Localization throughout the CrustMonday, 20 October 20148:00 AM - 12:00 PM118
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SINGLE CRYSTAL 40AR/39AR STUDY OF ALKALI FELDSPARS SUBJECT TO A LOW-GRADE METAMORPHIC OVERPRINT: A CASE STUDY OF MT. ROGERS RHYOLITE
29 Metamorphism in the Southeast and BeyondFriday, 11 April 20148:00 AM - 10:00 AMDuck Pond
2013
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HIGH-RESOLUTION IMAGING AND ANALYSIS OF LAMELLAR MICROSTRUCTURES IN UHP GARNET, ITALIAN ALPS
T323 STAMP: Structure, Tectonics, and Metamorphic Petrology IWednesday, 30 October 20138:00 AM - 12:00 PMRoom 506
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GARNET ZONING IMPLIES SPATIAL AND TEMPORAL MIGRATION OF THE MAIN CENTRAL THRUST ZONE, SUTLEJ VALLEY, NW INDIA
T404 Through the Looking Glass: Microstructural Insights into Tectonic ProcessesWednesday, 30 October 20131:00 PM - 5:00 PMRoom 507
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IS THERMODYNAMIC MODELING OF LOCAL MINERAL EQUILIBRIA REQUIRED TO ELUCIDATE HIGH TEMPERATURE P-T EVOLUTION?
T287 Hot Topics: Understanding Metamorphic Processes in the Middle to Lower CrustTuesday, 29 October 20131:00 PM - 5:00 PMRoom 502
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FORMATION OF CORUNDUM-BEARING RESIDUUM ASSEMBLAGES DURING RAPID CONTACT HEATING AND EXTRACTION OF HIGH-SI MELT FROM A PELITIC XENOLITH, CORTLANDT COMPLEX, NY
T287 Hot Topics: Understanding Metamorphic Processes in the Middle to Lower CrustTuesday, 29 October 20131:00 PM - 5:00 PMRoom 502
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PRESERVATION OF REGIONAL METAMORPHIC MINERAL COMPOSITIONS THROUGH A LATER HIGH-T CONTACT METAMORPHISM, WESTCHESTER COUNTY NY
70 Metamorphic Petrology and Thermodynamic Modeling: Progress and PracticeWednesday, 20 March 20138:00 AM - 12:00 PMGifford Room
2012
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PALEOZOIC HIGH PRESSURE METAMORPHISM IN THE MAIDENS GNEISS, GOOCHLAND TERRANE, VA: EVIDENCE FROM GNEISSES WITH KYANITE + K-FELDSPAR ASSEMBLAGES
228 Advances in Petrology and Mineralogy (Posters)Wednesday, 7 November 20129:00 AM - 6:00 PMHall B
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GARNET GROWTH ZONING IN METAPELITES: NOT SO SIMPLE AFTER ALL, AND REVEALING MORE THAN WE ONCE THOUGHT?
T148 From Composition and Modal Space, to Biopyriboles, to the Thermodynamics of Metamorphism: The Influence of James B. Thompson, Jr., on Present and Future Mineralogy, Metamorphic Petrology, and Northern Appalachian GeologyTuesday, 6 November 20128:00 AM - 12:00 PM208B
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MELTING OF METAPELITIC XENOLITHS IN MAFIC MAGMA, MELT REMOVAL, AND RESIDUUM FORMATION AT 0.8 GPA
T148 From Composition and Modal Space, to Biopyriboles, to the Thermodynamics of Metamorphism: The Influence of James B. Thompson, Jr., on Present and Future Mineralogy, Metamorphic Petrology, and Northern Appalachian GeologyTuesday, 6 November 20128:00 AM - 12:00 PM208B
2011
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A VERY CLOSE LOOK AT A VERY CLASSIC UHP WHITESCHIST FROM DORA MAIRA, ITALIAN ALPS: EMP MONAZITE DATING AND PHASE EQUILIBRIA
T12 Ultrahigh-Pressure Metamorphism: Observations from Nano- through Outcrop- to Plate-Tectonic Scales I: In Honor of J.G. Liou, 2011 MSA Roebling MedalistSunday, 9 October 20118:00 AM - 12:00 PMRoom 102D-F
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TECTONICS OF THE CENTRAL BLUE RIDGE PROVINCE: INSIGHTS FROM MONAZITE DATING AND P-T EVOLUTION
45 Advances in Defining Links between Deformation and MetamorphismMonday, 21 March 20111:30 PM - 5:30 PMAllegheny
2010
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UNDERSTANDING FLUID-ROCK INTERACTION DURING CORE COMPLEX EMPLACEMENT: STABLE ISOTOPE VARIATION AND WHITE MICA CHEMISTRY, KETTLE DETACHMENT, WASHINGTON, USA
65 Igneous/Metamorphic Petrology and Geochemistry (Posters)Tuesday, 16 March 20108:00 AM - 12:05 PMInternational ABCDF
2009
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EVIDENCE FOR ORDOVICIAN-SILURIAN LOW-PRESSURE REGIONAL METAMORPHISM OVERPRINTED BY AN ALLEGHANIAN-AGE CONTACT EVENT, SOUTHEASTERN VIRGINIA PIEDMONT
246 Petrology, Metamorphic (Posters)Wednesday, 21 October 20099:00 AM - 6:00 PMHall A
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UNDERSTANDING THE PRESERVATION OF AN INVERTED METAMORPHIC PROGRESSION, SCOTTISH CALEDONIDES: INTEGRATING QUANTITATIVE STRUCTURAL, KINEMATIC, AND METAMORPHIC DATA
268 Tectonics: Advances in Understanding Tectonics and Orogenesis Ancient and ModernWednesday, 21 October 20091:30 PM - 5:30 PMA107/108/109
2008
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Two Metamorphic Events Recorded in Granulite Facies Rocks from the Winding Stair Gap, Central Blue Ridge
T170 Strengthening Links between Metamorphic Conditions and Time: New Advances in High-Temperature Geochronology and Tracing P-T-t Paths of Metamorphic TerranesSunday, 5 October 20081:30 PM - 4:45 PM
2007
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ELECTRON MICROPROBE AGES OF MONAZITES FROM THE WINDING STAIR GAP, EASTERN BLUE RIDGE
15 Petrology and Tectonics of the Southern AppalachiansThursday, 29 March 20071:20 PM - 5:20 PM
2006
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U-TH-PB GEOCHRONOLOGY OF MONAZITE IN A QUARTZ-SILLIMANITE NODULAR LEUCOGRANITE FROM THE CARTHAGE-COLTON MYLONITE ZONE (CCMZ), NORTHWESTERN ADIRONDACK HIGHLANDS, NEW YORK
T143 Sigma Gamma Epsilon Student Research (Posters)Tuesday, 24 October 20068:00 AM - 12:00 PM
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SPATIAL AND TEMPORAL VARIABILITY IN DEFORMATION, METAMORPHISM, AND DISPLACEMENT ALONG THE SOUTH TIBETAN DETACHMENT SYSTEM; INSIGHTS INTO THE EXHUMATION OF THE GREATER HIMALAYAN SLAB, TIBET
92 Tectonics IMonday, 23 October 20061:30 PM - 5:30 PM
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ASPECTS OF THE ROLE OF SULFUR IN HIGH AND ULTRA-HIGH GRADE METAMORPHISM
T16 Petrologic Mineralogy—The Study of Minerals in Context I: In Honor of Charles V. GuidottiSunday, 22 October 20068:00 AM - 12:00 PM
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SHRIMP VERSUS ELECTRON MICROPROBE MONAZITE AGES: DIRECT COMPARISON OF ISOTOPIC VS CHEMICAL DATING, AND THE IMPLICATIONS FOR GEOLOGIC INTERPRETATION
25 New Geochronologic and Isotopic Approaches to Constraining Appalachian TectonicsFriday, 24 March 20068:00 AM - 12:00 PM
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MORE GEOCHRONOLOGIC EVIDENCE FOR POLYPHASE 1250-950 MA THERMOTECTONISM IN THE ADIRONDACK LOWLANDS, NEW YORK
25 New Geochronologic and Isotopic Approaches to Constraining Appalachian TectonicsFriday, 24 March 20068:00 AM - 12:00 PM
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ROCKS THAT PAUL WOULD HAVE LOVED: PETROLOGY OF HAUYNE PHONOLITES AND TRACHYTES FROM TAHITI
4 Magmatism in the Eastern US and Beyond: A Symposium in Honor of Paul C. RaglandThursday, 23 March 20068:00 AM - 12:00 PM
2005
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THERMAL-MECHANICAL EVOLUTION OF THE UPPER-SECTION OF THE GREATER HIMALAYAN SLAB, EVEREST-LHOTSE MASSIF, NEPAL
171 Tectonics IITuesday, 18 October 20051:30 PM - 5:30 PM
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EVIDENCE FOR OTTAWAN OVERPRINTING IN THE ADIRONDACK LOWLANDS, WITH IMPLICATIONS FOR LOWLANDS-HIGHLANDS JUXTAPOSITION HISTORY
4 Thermal History and Metamorphism of the Adirondacks in the Context of the Broader Grenville Orogenic Cycle IMonday, 14 March 20057:55 AM - 12:00 PM
2004
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CHEMISTRY AND MICROPROBE GEOCHRONOLOGY OF S-BEARING MONAZITE IN XENOLITHS IN THE CORTLANDT COMPLEX, NY: AN EXAMPLE OF MONAZITE IN A UHT ENVIRONMENT
195 Metamorphic PetrologyWednesday, 10 November 20048:00 AM - 12:00 PM
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THERMOBAROMETRY OF GARNET- AND BIOTITE-BEARING PYROXENE GRANULITES OF THE WESTERN BLUE RIDGE TERRANE, CENTRAL VIRGINIA
195 Metamorphic PetrologyWednesday, 10 November 20048:00 AM - 12:00 PM
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TIMING OF PROTEROZOIC THERMAL EVENTS IN THE POUDRE CANYON, COLORADO FRONT RANGE: CONSTRAINTS FROM MICROPROBE MONAZITE U-TH-PB DATING
T217 Pre-EarthScope Synthesis of the Rocky Mountains IV (Posters)Wednesday, 10 November 20048:00 AM - 12:00 PM
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DO 2450-2480 MA MINERAL AGES FROM WYOMING CRATONIC MARGINS (USA) INDICATE INCIPIENT BREAKUP OF SUPERCONTINENT KENORLAND?
T142 Early Paleoproterozoic (2.5–2.0 Ga) Events and Rates: Bridging Field Studies and ModelsTuesday, 9 November 20048:00 AM - 12:00 PM
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ELECTRON MICROPROBE AND ISOTOPIC GEOCHRONOLOGY OF SHEARED MONAZITE PORPHYROCLASTS: DOCUMENTATION OF VARIABLE LEAD LOSS AT GREENSCHIST-FACIES CONDITIONS
61 PetrologySaturday, 27 March 20048:00 AM - 12:00 PM
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TACONIAN METAMORPHISM ALIVE AND WELL IN THE SOUTHERN BLUE RIDGE
61 PetrologySaturday, 27 March 20048:00 AM - 12:00 PM
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THE APPALACHIAN PERI-GONDWANAN REALM: A PALEOGEOGRAPHIC PERSPECTIVE FROM THE SOUTH
38 Peri-Gondwanan Terranes of the Appalachians IFriday, 26 March 20048:00 AM - 12:00 PM
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PRELIMINARY REASSESSMENT OF THE TECTONOTHERMAL EVOLUTION OF THE SMITH RIVER ALLOCTHON, VA: IMPLICATIONS FOR TERRANE AFFINITY
38 Peri-Gondwanan Terranes of the Appalachians IFriday, 26 March 20048:00 AM - 12:00 PM
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PALEOZOIC (NOT MESOPROTEROZOIC) HIGH-GRADE METAMORPHISM IN THE GOOCHLAND TERRANE, VIRGINIA: NEW RESULTS FROM ELECTRON MICROPROBE DATING OF MONAZITE
20 Nature and Timing of Grenvillian Orogenesis in Eastern North America (pre-Cambrian) IIThursday, 25 March 20041:00 PM - 5:00 PM
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AUGITE-INVERTED FERROPIGEONITE THERMOMETRY IN "CHARNOCKITIC" ROCKS OF THE GRENVILLIAN BLUE RIDGE, CENTRAL VIRGINIA
20 Nature and Timing of Grenvillian Orogenesis in Eastern North America (pre-Cambrian) IIThursday, 25 March 20041:00 PM - 5:00 PM
2003
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TACONIAN METAMORPHISM IN EASTERN GREAT SMOKY MOUNTAINS INFERRED FROM U-TH-PB MONAZITE CHEMICAL AGES
10 Petrotectonic History of the Blue Ridge Belt: Faults, Fault Blocks, Terrains, and OphiolitesThursday, 13 March 20031:00 PM - 5:20 PM
2002
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DATING MYLONITE FORMATION USING MICROPROBE MONAZITE DATA: EXAMPLES FROM THE SOUTHERN APPALACHIANS AND NEW ENGLAND, AND A TIMS-MICROPROBE COMPARISON
T25 Microprobe Monazite Geochronology: New Developments and ApplicationsSunday, 27 October 20028:00 AM - 12:00 PM
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SINGLE-CRYSTAL AND WITHIN-GRAIN VARIATION IN U-TH-PB MONAZITE AND 40AR/39AR MUSCOVITE AGES FOR SAMPLES OF THE GASSETTS-TYPE SCHIST, VERMONT APPALACHIANS
T25 Microprobe Monazite Geochronology: New Developments and ApplicationsSunday, 27 October 20028:00 AM - 12:00 PM
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MONAZITE CHEMICAL AGES REVEAL MORE THAN ONE “GREAT SMOKY GROUP” IN SOUTHERN BLUE RIDGE, APPALACHIAN OROGEN
T25 Microprobe Monazite Geochronology: New Developments and ApplicationsSunday, 27 October 20028:00 AM - 12:00 PM
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PROTEROZOIC AND PALEOZOIC THERMAL HISTORY OF THE GRENVILLIAN BLUE RIDGE TERRANE, CENTRAL VIRGINIA, AS PRESERVED BY COMPLEXLY ZONED MONAZITES
T25 Microprobe Monazite Geochronology: New Developments and ApplicationsSunday, 27 October 20028:00 AM - 12:00 PM
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A NEW MODEL FOR PALEOZOIC TECTONICS IN SOUTHWESTERN NEW ENGLAND: CONSTRAINTS ON THERMAL HISTORY FROM MONAZITE U-TH-PB GEOCHRONOLOGY AND AR THERMOCHRONOLOGY
18 Paleozoic Tectonics of the Northern Appalachian Mountains: New Insights and Persistent Problems: First Annual NETectonics Symposium ITuesday, 26 March 20028:00 AM - 12:00 PM
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MONAZITE MICROPROBE AGES FROM A STRUCTURALLY COMPLEX OUTCROP, CENTRAL MASSACHUSETTS: EXPLORATION OF “ACADIAN” TECTONOTHERMAL EVENTS
5 New Frontiers in Geologic MicroanalysisMonday, 25 March 20028:00 AM - 12:00 PM
2001
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IMPLICATIONS OF A CAMBRIAN (530 MA) TECTONOTHERMAL EVENT IN THE SMITH RIVER ALLOCHTHON, SOUTHERN VIRGINIA
T110 Arc Terranes in the Appalachians and Caledonides and their Role in Paleozoic Orogenesis IIWednesday, 7 November 20018:00 AM - 12:00 PM
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ELECTRON MICROPROBE U-TH-PB GEOCHRONOLOGY OF MONAZITES IN CONTACT METAMORPHOSED ALUMINOUS ROCKS OF THE MARTINSVILLE INTRUSIVE COMPLEX, SMITH RIVER ALLOCHTHON, VIRGINIA
6 Advances in Geochronology and Thermochronology in the Appalachian OrogenThursday, 5 April 20018:15 AM - 12:00 PM
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APPLICATIONS OF LASER 40AR/39AR DATING TO STUDIES OF APPALACHIAN METAMORPHIC EVOLUTION, EXAMPLES FROM NEW ENGLAND AND THE SOUTHWESTERN BLUE RIDGE
6 Advances in Geochronology and Thermochronology in the Appalachian OrogenThursday, 5 April 20018:15 AM - 12:00 PM
Date Unknown
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RETROGRESSION OF MONAZITE IN SHEARED AND UNSHEARED ROCKS AND THE RESETTING OF MONAZITE U-TH-PB AGES
T76 Microprobe Monazite Geochronology: New Developments and Applications (Posters)
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U-PB GEOCHRONOLOGY OF MONAZITE AND ZIRCON IN ARCHEAN METAMORPHIC ROCKS FROM THE SOUTH MADISON AND BEARTOOTH RANGES, SW MONTANA, WITH IMPLICATIONS FOR THERMOTECTONIC EVOLUTION OF THE WYOMING PROVINCE
244 Precambrian Geology (Posters)
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EVIDENCE FOR ~2550 MA CONVERGENT THERMOTECTONISM IN SW MONTANA, WITH IMPLICATIONS FOR NEOARCHEAN SUPERCONTINENT ASSEMBLY
T236 Minerals, Melts, Fluids, and the Evolution of Mountain Belts (Posters): A Tribute to Maria Luisa Crawford
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MONAZITES IN THE NW ADIRONDACK LOWLANDS RECORD EVIDENCE OF THE OTTAWAN ORGOENY
50 Metamorphic Petrology (Posters)
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GEOCHRONOLOGY OF U-BEARING ACCESSORIES FROM PRECAMBRIAN METAMORPHIC ROCKS, RUBY RANGE, SW MONTANA: DECIPHERING GEOLOGICAL EVENTS THAT SHAPED THE NW WYOMING PROVINCE
244 Precambrian Geology (Posters)