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Activity

2023

• CONTINENTAL-SCALE GLACIATION DURING THE PALEOPROTEROZOIC: DETRITAL ZIRCON EVIDENCE FROM THE SNOWY PASS SUPERGROUP, WYOMING
  230 D17. Recent Advances in Sedimentology and Stratigraphy (Posters)
  Wednesday, 18 October 2023

  8:00 AM - 5:30 PM

  Hall B
• PROVENANCE OF PALEOGENE STRATA AT SLIM BUTTES, SOUTH DAKOTA, USA
  T112 Sedimentary Geology Division/SEPM Student Research Poster Competition: Dynamics of Stratigraphy and Sedimentation (Posters)
  Monday, 16 October 2023

  8:00 AM - 5:30 PM

  Hall B
• PROVENANCE ANALYSIS OF THE PALEOGENE MOUNTAIN MEADOWS FORMATION, BLACK HILLS SOUTH DAKOTA
  T112 Sedimentary Geology Division/SEPM Student Research Poster Competition: Dynamics of Stratigraphy and Sedimentation (Posters)
  Monday, 16 October 2023

  8:00 AM - 5:30 PM

  Hall B

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2021

• SEDIMENTOLOGY, PALEOMAGNETISM AND DETRITAL ZIRCON PROVENANCE OF A PROTEROZOIC METAGRAYWACKE SUCCESSION IN MARATHON COUNTY, WISCONSIN, USA
  227 D22. Recent Advances in Precambrian Geology (Posters)
  Wednesday, 13 October 2021

  9:00 AM - 1:00 PM

  Exhibit Hall A
• CONTINENTAL-SCALE SEDIMENT DISPERSAL OF THE MESOPROTEROZOIC BARABOO INTERVAL QUARTZITES IN THE SOUTHERN LAKE SUPERIOR REGION, USA
  T161 Sedimentary Geology Division/SEPM Student Research Poster Competition: Dynamics of Stratigraphy and Sedimentation (Posters)
  Tuesday, 12 October 2021

  9:00 AM - 1:00 PM

  Exhibit Hall A
• PROTEROZOIC GEOLOGY OF THE DELLS OF THE EAU CLAIRE RIVER IN EASTERN MARATHON COUNTY, WISCONSIN, USA
  T53 Sigma Gamma Epsilon Student Research Exhibition (Posters)
  Sunday, 10 October 2021

  2:30 PM - 6:30 PM

  Exhibit Hall A

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2020

• PROVENANCE AND STRATIGRAPHIC CORRELATION OF THE OLIGOCENE WHITE RIVER GROUP IN THE BIGHORN MOUNTAINS, WYOMING AND BLACK HILLS, SOUTH DAKOTA, USA
  30 D24. Recent Advances in Stratigraphy
  Monday, 26 October 2020

  5:30 PM - 8:00 PM

  Meeting Rooms
• A PALEOMAGNETIC AND STRUCTURAL STUDY OF THE PROTEROZOIC (1868 MA) GABBROIC XENOLITH, MARSHFIELD TERRANE, WISSOTA DAM, WISCONSIN
  2 Insights into Processes of Proterozoic Crustal Growth, Modification, and Stabilization in the North-Central U.S. Continental Interior
  Monday, 18 May 2020

  8:00 AM - 12:00 PM

  French River Room 1
• RECONNAISSANCE PALEOMAGNETIC STUDY OF THE ~1450 MA WOLF RIVER BATHOLITH, WISCONSIN
  2 Insights into Processes of Proterozoic Crustal Growth, Modification, and Stabilization in the North-Central U.S. Continental Interior
  Monday, 18 May 2020

  8:00 AM - 12:00 PM

  French River Room 1
• NEOPROTEROZOIC SEDIMENTATION IN THE LAURENTIAN MIDCONTINENT: DETRITAL ZIRCON PROVENANCE OF THE JACOBSVILLE SANDSTONE, LAKE SUPERIOR BASIN, USA AND CANADA
  2 Insights into Processes of Proterozoic Crustal Growth, Modification, and Stabilization in the North-Central U.S. Continental Interior
  Monday, 18 May 2020

  8:00 AM - 12:00 PM

  French River Room 1

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2019

• AN EARLY PENOKEAN AGE FOR THE MCCAULEY GNEISS IN THE MOUNTAIN SHEAR ZONE, NORTHEASTERN WISCONSIN, USA
  T279 Precambrian Linkages across Laurentia: Looking for Geological, Geophysical, and Paleogeographic Connections and Controversies Associated with the Growth and Tectonic Evolution of Laurentia from the Neoarchean to the Neoproterozoic (Posters)
  Wednesday, 25 September 2019

  9:00 AM - 6:30 PM

  Hall AB, North Building
• PALEOPROTEROZOIC AGE FOR METASEDIMENTARY ROCKS IN JACKSON COUNTY, WISCONSIN, SOUTHERN LAKE SUPERIOR PROVINCE, USA
  T279 Precambrian Linkages across Laurentia: Looking for Geological, Geophysical, and Paleogeographic Connections and Controversies Associated with the Growth and Tectonic Evolution of Laurentia from the Neoarchean to the Neoproterozoic (Posters)
  Wednesday, 25 September 2019

  9:00 AM - 6:30 PM

  Hall AB, North Building
• TWINNING STRAINS FROM SYN-FAULTING CALCITE GOUGE: SMALL-OFFSET STRIKE-SLIP, NORMAL AND THRUST FAULTS
  T215 Structure and Tectonic Studies, from Outcrop to Supercontinent II: In Honor of Ian Dalziel
  Tuesday, 24 September 2019

  1:30 PM - 5:30 PM

  Room 229A, North Building
• COMPREHENSIVE PROVENANCE ANALYSIS OF THE EARLY PALEOGENE STRATA IN THE BIGHORN BASIN (NORTHWEST WYOMING, U.S.A.)
  39 D4. Sedimentology and Stratigraphy (Posters)
  Wednesday, 27 March 2019

  8:30 AM - 11:45 AM

  Big Basin/Kaw Nation Rooms

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2018

• DETRITAL ZIRCON U-PB GEOCHRONOLOGY OF THE NEOPROTEROZOIC JACOBSVILLE SANDSTONE ON THE EASTERN END OF LAKE SUPERIOR, ONTARIO, CANADA
  264 D31. Precambrian Geology (Posters)
  Wednesday, 7 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• DETRITAL ZIRCON PROVINCE OF THE JURASSIC SUNDANCE FORMATION LOCATED IN BUFFALO, WYOMING
  T121 Sedimentary Geology Division/SEPM Student Research Competition: Dynamics of Stratigraphy and Sedimentation (Posters)
  Monday, 5 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• DETRITAL ZIRCON PROVENANCE OF QUARTZITE GASTROLITHS IN THE JURASSIC MORRISON FORMATION, WYOMING, USA
  T121 Sedimentary Geology Division/SEPM Student Research Competition: Dynamics of Stratigraphy and Sedimentation (Posters)
  Monday, 5 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• DETRITAL ZIRCON U-PB GEOCHRONOLOGY AND PROVENANCE OF THE EOCENE WILLWOOD FORMATION, NORTHERN ABSAROKA BASIN, WYOMING
  T121 Sedimentary Geology Division/SEPM Student Research Competition: Dynamics of Stratigraphy and Sedimentation (Posters)
  Monday, 5 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• DETRITAL ZIRCON GEOCHRONOLOGY OF KEWEENAWAN INTERFLOW SEDIMENTS WITHIN THE NORTH SHORE VOLCANIC GROUP
  T119 Evolution of the Midcontinent Rift: A Window into Proterozoic Environments, a Repository of Minerals, and a Lesson in Rifting (Posters)
  Monday, 5 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• DETRITAL ZIRCON PROVENANCE OF THE ORDOVICIAN LANDER SANDSTONE LOCATED IN EASTERN AND CENTRAL WYOMING
  T121 Sedimentary Geology Division/SEPM Student Research Competition: Dynamics of Stratigraphy and Sedimentation (Posters)
  Monday, 5 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• EVIDENCE FOR LONG DISTANCE EOLIAN TRANSPORT OF 1460 MA ZIRCONS IN THE BORDEN SILTSTONE, ILLINOIS BASIN, USA
  T121 Sedimentary Geology Division/SEPM Student Research Competition: Dynamics of Stratigraphy and Sedimentation (Posters)
  Monday, 5 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• DETRITAL ZIRCON PROVENANCE OF THE EARLY PALEOZOIC ARENITES OF THE LAURENTIAN MIDCONTINENT
  T71 Celebrating the Sedimentary Legacy of Dr. Robert H. Dott, Jr., Part II
  Sunday, 4 November 2018

  1:30 PM - 5:30 PM

  Sagamore Ballroom 7

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2017

• COMPARISON OF U-PB DETRITAL ZIRCON PROVENANCE BETWEEN UPPER JURASSIC MORRISON FORMATION AND LOWER CRETACEOUS CLOVERLY FORMATION (BIGHORN BASIN, NORTHWEST WYOMING, USA)
  T303 The Timing and Causes of Jurassic–Cretaceous Biological, Climatic, and Tectonic Transitions in North America
  Wednesday, 25 October 2017

  8:00 AM - 12:00 PM

  Room 611
• PALEOMAGNETISM OF AN ARCHEAN HARZBURGITE, BIGHORN MOUNTAINS, WYOMING, USA
  T153 Sigma Gamma Epsilon-Undergraduate Research (Posters)
  Monday, 23 October 2017

  9:00 AM - 6:30 PM

  Halls 4EF
• DETRITAL ZIRCON U-PB GEOCHRONOLOGY OF THE WASATCH FORMATION, POWDER RIVER BASIN, WYOMING
  T153 Sigma Gamma Epsilon-Undergraduate Research (Posters)
  Monday, 23 October 2017

  9:00 AM - 6:30 PM

  Halls 4EF
• U-PB GEOCHRONOLOGY OF AN ARCHEAN SERPENTINIZED HARZBURGITE, SOUTHERN BIGHORN MOUNTAINS, WYOMING
  T181 Cratonic Assembly in the Precambrian: Forming the Core of Modern and Ancient Landmasses (Posters)
  Monday, 23 October 2017

  9:00 AM - 6:30 PM

  Halls 4EF

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2016

• PROVENANCE ANALYSIS OF THE BASAL AMSDEN FORMATION OF WYOMING USING DETRITAL ZIRCON GEOCHRONOLOGY BY LA-ICP-MS
  T169 Detrital Zircons on the North American Continental Interior (Posters)
  Monday, 26 September 2016

  9:00 AM - 6:30 PM

  Exhibit Hall E/F
• DETRITAL ZIRCON U-PB GEOCHRONOLOGY OF THE BASAL NEOPROTEROZOIC JACOBSVILLE SANDSTONE AT L’ANSE, MI, USA
  T169 Detrital Zircons on the North American Continental Interior (Posters)
  Monday, 26 September 2016

  9:00 AM - 6:30 PM

  Exhibit Hall E/F
• DETRITAL ZIRCON GEOCHRONOLOGY OF PROTEROZOIC QUARTZITE CLASTS IN THE PERMIAN ABO FORMATION, SACRAMENTO MOUNTAINS, NEW MEXICO, USA
  T169 Detrital Zircons on the North American Continental Interior (Posters)
  Monday, 26 September 2016

  9:00 AM - 6:30 PM

  Exhibit Hall E/F
• DETRITAL ZIRCON U-PB GEOCHRONOLOGY OF THE UPPER NEOPROTEROZOIC JACOBSVILLE SANDSTONE EASTERN UPPER PENINSULA, MICHIGAN, USA
  T169 Detrital Zircons on the North American Continental Interior (Posters)
  Monday, 26 September 2016

  9:00 AM - 6:30 PM

  Exhibit Hall E/F
• U-PB GEOCHRONOLOGY OF THE BIGHORN DOLOMITE, WYOMING, USA: IMPLICATIONS FOR ORDOVICIAN WIND PATTERNS AND STRENGTH
  T52 Detrital Zircons on the North American Continental Interior I
  Sunday, 25 September 2016

  1:30 PM - 5:30 PM

  Room 402
• DETRITAL ZIRCON GEOCHRONOLOGY OF CHESTERIAN SANDSTONES IN THE ILLINOIS BASIN, USA
  T52 Detrital Zircons on the North American Continental Interior I
  Sunday, 25 September 2016

  1:30 PM - 5:30 PM

  Room 402
• SPATIOTEMPORAL EVOLUTION OF BRITTLE FAULT ACTIVITY BASED ON STRAIN ANALYSIS AND IN SITU U-PB AGES OF SYNTECTONIC TWINNED CALCITE
  T25 Deconstructing Damage: Holistic Perspectives on the Spatiotemporal Evolution of Brittle Fault Zones
  Sunday, 25 September 2016

  8:00 AM - 12:00 PM

  Room 203
• PROVENANCE OF EARLY-MIDDLE PENNSYLVANIAN SANDSTONES OF THE MIDCONTINENT: DETRITAL ZIRCON EVIDENCE FOR THE UNROOFING OF APPALACHIAN OROGENIES IN IOWA
  T52 Detrital Zircons on the North American Continental Interior I
  Sunday, 25 September 2016

  1:30 PM - 5:30 PM

  Room 402

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2015

• AGE OF THE JACOBSVILLE SANDSTONE AND IMPLICATIONS FOR THE EVOLUTION OF THE MIDCONTINENT RIFT
  T319 Mountains across the Oceans: Caledonian, Variscan, and Appalachian Orogenies through Time (Posters)
  Wednesday, 4 November 2015

  9:00 AM - 6:30 PM

  Exhibit Hall
• STRAIN VARIATIONS IN MARBLES ACROSS THE PROTEROZOIC GRENVILLE OROGEN, USA
  T24 Perspectives on Orogenic Evolution, Dating Brittle Faults and Mylonitic Shear Zones, Bending Mountains, and Assembling Supercontinents I: A Session to Honor the Career of Ben Van Der Pluijm
  Sunday, 1 November 2015

  8:00 AM - 12:00 PM

  Room 343
• MAGNETIC FABRICS IN AN EOCENE ANDESITIC DIKE, UPPER PLATE, HEART MOUNTAIN SLIDE, WY
  46 Structural Geology (Posters)
  Sunday, 1 November 2015

  9:00 AM - 5:30 PM

  Exhibit Hall
• AGE OF THE JACOBSVILLE SANDSTONE AND IMPLICATIONS FOR THE EVOLUTION OF THE MIDCONTINENT RIFT
  16 New Insights into the Midcontinent Rift and Continental Rifting
  Tuesday, 19 May 2015

  1:30 PM - 4:50 PM

  Hall of Ideas H

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2013

• DETRITAL ZIRCON U/PB PROVENANCE OF THE LOWER CRETACEOUS CLOVERLY FORMATION, BIG HORN AND POWDER RIVER BASINS, WYOMING
  T247 Sigma Gamma Epsilon Undergraduate Research (Posters)
  Tuesday, 29 October 2013

  9:00 AM - 6:30 PM

  Hall D
• AGE AND PROVENANCE OF QUARTZITE CLASTS IN TERTIARY CONGLOMERATES, WESTERN BIG HORN BASIN, WY USING DETRITAL ZIRCON U/PB GEOCHRONOLOGY
  T247 Sigma Gamma Epsilon Undergraduate Research (Posters)
  Tuesday, 29 October 2013

  9:00 AM - 6:30 PM

  Hall D
• PROVENANCE ANALYSIS OF THE FORT UNION FORMATION IN THE WESTERN BIG HORN BASIN USING U-PB DETRITAL ZIRCON GEOCHRONOLOGY
  T252 Advances in Quantitative Sediment Provenance Research: Novel Approaches from Multi-Proxy Provenance Data to Provenance Modeling (Posters)
  Tuesday, 29 October 2013

  9:00 AM - 6:30 PM

  Hall D
• AGE AND PROVENANCE OF EOCENE VOLCANIC ROCKS AT HOMINY PEAK, NORTHERN TETON RANGE, WY
  T247 Sigma Gamma Epsilon Undergraduate Research (Posters)
  Tuesday, 29 October 2013

  9:00 AM - 6:30 PM

  Hall D
• AGE AND PROVENANCE OF PROXIMAL TERTIARY QUARTZITE COBBLE CONGLOMERATES NEAR JACKSON HOLE, WY USING DETRITAL ZIRCON U/PB GEOCHRONOLOGY
  T247 Sigma Gamma Epsilon Undergraduate Research (Posters)
  Tuesday, 29 October 2013

  9:00 AM - 6:30 PM

  Hall D

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2012

• PROVENANCE ANALYSIS OF THE PASS PEAK, PINYON, AND HAREBELL FORMATIONS USING U/PB DETRITAL ZIRCON GEOCHRONOLOGY
  161 Recent Advances in Stratigraphy (Posters)
  Tuesday, 6 November 2012

  9:00 AM - 6:00 PM

  Hall B
• THE AGE AND PROVENANCE OF THE EOCENE CRANDALL CONGLOMERATE, NORTHWEST WYOMING
  T41 The Next Generation—Sedimentary Geology Student Poster Session (Posters)
  Sunday, 4 November 2012

  9:00 AM - 6:30 PM

  Hall B
• PROVENANCE ANALYSIS OF THE LOWER EOCENE WILLWOOD FORMATION IN THE ABSAROKA BASIN USING U/PB DETRITAL ZIRCON GEOCHRONOLOGY
  T41 The Next Generation—Sedimentary Geology Student Poster Session (Posters)
  Sunday, 4 November 2012

  9:00 AM - 6:30 PM

  Hall B
• U/PB DETRITAL ZIRCON GEOCHRONOLOGY OF THE WILLWOOD FORMATION IN THE BIGHORN BASIN, WY: IMPLICATIONS FOR EARLY EOCENE PALEOGEOGRAPHY
  T41 The Next Generation—Sedimentary Geology Student Poster Session (Posters)
  Sunday, 4 November 2012

  9:00 AM - 6:30 PM

  Hall B
• THE TIMING AND EMPLACEMENT OF THE HEART MOUNTAIN DETACHMENT AT WHITE MOUNTAIN AND SILVERGATE, WYOMING: DETRITIAL ZIRCON AND ANISOTROPY OF MAGNETIC SUCEPTIBILITY ANALYSIS
  11 Detrital Zircons Studies in the Western Interior U.S. and Their Implications for Ancient Landscape Evolution (Posters)
  Wednesday, 9 May 2012

  8:00 AM - 5:30 PM

  Alvarado D&E
• PROVENANCE ANALYSIS OF PENNSYLVANIAN SANDSTONES IN THE ILLINOIS BASIN USING DETRITAL ZIRCON GEOCHRONOLOGY
  25 Stratigraphy and Sedimentology (Posters)
  Tuesday, 24 April 2012

  8:00 AM - 11:30 AM

  Exhibit Hall 101/102
• CALCITE TWINNING STRAIN ANALYSIS OF THE ALLOCHTHONOUS JURASSIC SUNDANCE, SOUTH FORK DETACHMENT, NORTHWEST WYOMING
  6 Special Poster Session on Undergraduate Research (Posters)
  Monday, 23 April 2012

  8:00 AM - 11:40 AM

  Exhibit Hall 101/102

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2011

• VERTICAL INJECTITES OF DETACHMENT CARBONATE ULTRACATACLASITE AT WHITE MOUNTAIN, HEART MOUNTAIN DETACHMENT, WYOMING
  31 Structural Geology (Posters): Advances in Structural Geology
  Sunday, 9 October 2011

  9:00 AM - 6:00 PM

  Hall C
• PROVENANCE ANALYSIS OF THE WILLWOOD AND WAPITI FORMATION (EOCENE) SANDSTONES IN THE ABSAROKA BASIN, WY USING DETRITAL ZIRCON GEOCHRONOLOGY
  T39 Sigma Gamma Epsilon Undergraduate Research (Posters)
  Sunday, 9 October 2011

  9:00 AM - 6:00 PM

  Hall C
• NEW INSIGHTS ON THE STRUCTURAL EVOLUTION OF THE EOCENE SOUTH FORK DETACHMENT, WYOMING
  T39 Sigma Gamma Epsilon Undergraduate Research (Posters)
  Sunday, 9 October 2011

  9:00 AM - 6:00 PM

  Hall C

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2010

• HEAVY MINERAL PROVENANCE ANALYSIS OF THE WILLWOOD FM., ABSAROKA RANGE, NORTHWESTERN WYOMING
  T110 Sigma Gamma Epsilon Undergraduate Research (Posters)
  Monday, 1 November 2010

  8:00 AM - 6:00 PM

  Hall D
• HEAVY MINERAL ANALYSIS OF THE BASAL WAPITI FORMATION IN THE SOUTH FORK SHOSHONE RIVER VALLEY, WYOMING
  T110 Sigma Gamma Epsilon Undergraduate Research (Posters)
  Monday, 1 November 2010

  8:00 AM - 6:00 PM

  Hall D

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2006

• ALPINE DEFORMATION FROM THE INTERNAL AUSTRIAN TAUREN WINDOW NORTHWESTWARD TO THE BRITISH FORELAND AND IRISH TERTIARY PROVINCE
  T199 Deformation in Sedimentary Rocks I: A Tribute to Richard H. Groshong, Jr.
  Wednesday, 25 October 2006

  8:00 AM - 12:00 PM

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2005

• GEOLOGY AND BIOLOGY IN THE GALAPAGOS ISLANDS
  T80 International Undergraduate Field Trips: Logistics, Challenges, and Successes
  Monday, 17 October 2005

  8:00 AM - 12:00 PM
• PROGRESSIVE DEFORMATION IN MIDCONTINENTAL MINNESOTA FROM THE PENOKEAN (1.8 GA) THROUGH LARAMIDE OROGENS (~50 MA)
  2 Continental Tectonics of Shield Regions
  Thursday, 19 May 2005

  8:25 AM - 11:50 PM

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2002

• CHARACTERIZATION OF MIDDLE PROTEROZOIC STRAIN IN THE MID-CONTINENT: EVIDENCE FROM THE “BARABOO INTERVAL” QUARTZITES (1700 MA) USING THREE STRAIN-GAUGE TECHNIQUES
  T30 Structure and Tectonics of the Midcontinent, North America
  Sunday, 27 October 2002

  8:00 AM - 12:00 PM

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Date Unknown

• DYNAMICS OF THE EMPLACEMENT OF THE HEART MOUNTAIN ALLOCHTHON AT WHITE MOUNTAIN: CONSTRAINTS FROM CALCITE TWIN STRAIN, ANHYSTERETIC MANETIC SUSCEPTIBILITY, AND THERMODYNAMIC CALCULATIONS
  88 Structural Geology (Posters) I: Deformation Processes
• CALCITE TWINNING CONSTRAINTS ON ALPINE NAPPE EMPLACEMENT, HELLENIC ARC, CRETE, GREECE
  27 Tectonics (Posters) I: Strike-slip, Extension, Alpine-Himalayan Tectonics
• SYN-CLEAVAGE TWINNING IN CALCITE IN FOLDED CLASTIC DIKES, DELAWARE WATER GAP, NEW JERSEY
  83 Structural Geology and Tectonics (Posters)
• CALCITE STRAIN ANALYSIS ON LAMPROPHYRE DIKES: STRESS-STRAIN ORIENTATIONS DURING EMPLACEMENT
  61 Structural Geology (Posters): Faulting, Folding, and Fabric Development
• FABRIC ANALYSIS AND STRESS-STRAIN IN HIGH P-T VARISCAN CALCSILICATE TECTONITES TO THE SOUTH OF THE TAUERN WINDOW, AUSTRIAN ALPS
  182 Structural Geology (Posters)
• PALEOMAGNETIC ANALYSIS OF BASALT DIKES AT CATHEDRAL CLIFFS, WY: IMPLICATIONS FOR HEART MOUNTAIN FAULTING
  89 Structural Geology (Posters)
• Origin of Lake Superior Region Early Paleozoic Super-Mature Quartz Arenites: Evidence from U-Pb Detrital Zircon Ages
  304 Sediments, Carbonates / Clastic (Posters)
• SOURCE ROCK AGES AND PATTERNS OF SEDIMENTATION IN THE LAKE SUPERIOR REGION: RESULTS OF PRELIMINARY U-PB DETRITAL ZIRCON STUDIES
  T207 Using Detrital Zircon Geochronology to Answer Geologic Questions We Formerly Could Not Ask (Posters)
• U-PB DATING OF DETRITAL ZIRCON FROM THE NEOPROTEROZOIC (?) FOND DU LAC AND HINCKLEY SANDSTONE FORMATIONS NEAR DULUTH, MINNESOTA
  T207 Using Detrital Zircon Geochronology to Answer Geologic Questions We Formerly Could Not Ask (Posters)