Joseph Colgan
Geosciences and Environmental Change Science Center, Denver, CO
Activity
2025
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A MAP SYNTHESIS ENGINE FOR COMPILING MULTIPLE GEOLOGIC MAPS IN THE USGS GEOLOGIC MAP SCHEMA (GEMS): AN EXAMPLE USING CALIFORNIA'S STATEWIDE 1:250,000-SCALE GEOLOGIC ATLAS MAP SERIES
33 Cordilleran and Other Orogenic Belt Evolution from Components to Whole (Posters)Friday, 4 April 20258:00 AM - 4:00 PMSierra Ballroom
2024
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GEOLOGIC MAP OF THE CONTERMINOUS UNITED STATES: EARTH’S SURFACE GEOLOGY
T105 Geologic Maps and Their Derivatives (Posters)Monday, 23 September 20248:00 AM - 5:30 PMHall D
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A MAP SYNTHESIS ENGINE FOR CONSTRUCTING GEOLOGIC MAPS OF THE UNITED STATES
T105 Geologic Maps and Their Derivatives (Posters)Monday, 23 September 20248:00 AM - 5:30 PMHall D
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GEOLOGIC MAP OF THE CONTERMINOUS UNITED STATES: PRE-QUATERNARY BEDROCK GEOLOGY
T105 Geologic Maps and Their Derivatives (Posters)Monday, 23 September 20248:00 AM - 5:30 PMHall D
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GEOLOGIC MAP OF THE CONTERMINOUS UNITED STATES: PRECAMBRIAN GEOLOGY
T105 Geologic Maps and Their Derivatives (Posters)Monday, 23 September 20248:00 AM - 5:30 PMHall D
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GEOLOGIC MAP OF THE CONTERMINOUS UNITED STATES: QUATERNARY GEOLOGY
T105 Geologic Maps and Their Derivatives (Posters)Monday, 23 September 20248:00 AM - 5:30 PMHall D
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PRELIMINARY QUATERNARY GEOLOGIC MAP OF THE UNITED STATES
39 Mapping the West (Posters)Friday, 17 May 20249:00 AM - 1:30 PMGrand Ballroom
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PRELIMINARY PRECAMBRIAN GEOLOGIC MAP OF THE CENTRAL UNITED STATES
14 Geologic Maps, Geophysical Maps, 3-D Geological Models, Digital Mapping Techniques, Map Derivatives, and Digital Map Preparation (Posters)Monday, 15 April 20248:00 AM - 12:00 PMGrand Ballroom
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PRELIMINARY BEDROCK GEOLOGIC MAP OF THE CENTRAL AND NORTHEASTERN UNITED STATES
24 Mapping in the Geosciences: Processes and Products (Posters)Monday, 18 March 20249:00 AM - 1:00 PMArmory Ballroom
2023
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A NATIONAL-RESOLUTION COMPILATION OF QUATERNARY GEOLOGY FOR THE CONTERMINOUS UNITED STATES
7 Geologic Mapping in the Rocky Mountains: Evolving Techniques and Challenges (Posters)Tuesday, 23 May 20238:00 AM - 6:00 PMC/D Ballroom
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GEOLOGIC MAP OF THE ELEVENMILE CANYON CALDERA, STILLWATER RANGE AND CLAN ALPINE AND DESATOYA MOUNTAINS, WEST-CENTRAL NEVADA
6 Drivers of Cordilleran Magmatic Processes and Geochemistry (Posters)Wednesday, 17 May 20238:00 AM - 6:00 PMCargo Room
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3D MODELING OF RANGE-BOUNDING FAULTS OF THE NORTHERN BASIN AND RANGE
8 Integrated Geologic Maps and 3D Models in a Complex Non-Layered World (Posters)Wednesday, 17 May 20238:00 AM - 6:00 PMCargo Room
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PRELIMINARY DETRITAL ZIRCON AND ΕHF DATA FROM THE UPPER TRIASSIC (NORIAN) AULD LANG SYNE BASIN OF NEVADA (USA), WITH IMPLICATIONS FOR ARC EVOLUTION AND CONTINENTAL PALEOGEOGRAPHY
5 Evolution of Transcrustal Cordilleran Arc Systems (Posters)Wednesday, 17 May 20238:00 AM - 6:00 PMCargo Room
2022
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EFFORTS TOWARDS CONSISTENT AND COMPLETE BEDROCK AND SURFICIAL MAPS OF THE UNITED STATES
T30 Geology across Geographic Boundaries: Identifying Challenges and Opportunities Related to the Creation of a Digital Geologic Map of the United States by the End of This Decade (Posters)Sunday, 9 October 20229:00 AM - 1:00 PMExhibit Hall F
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INTEGRATED 1:100,000-SCALE SURFICIAL AND BEDROCK GEOLOGIC MAPPING OF THE INDIAN SPRINGS QUADRANGLE, NORTHWEST OF LAS VEGAS, NEVADA, USA
T30 Geology across Geographic Boundaries: Identifying Challenges and Opportunities Related to the Creation of a Digital Geologic Map of the United States by the End of This Decade (Posters)Sunday, 9 October 20229:00 AM - 1:00 PMExhibit Hall F
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CONTINENTAL-SCALE INVESTIGATIONS USING A NATIONAL GEOLOGIC MAP DATABASE: FIRST STEPS TOWARDS A NATIONAL SYNTHESIS OF QUATERNARY GEOLOGIC MAPS
T30 Geology across Geographic Boundaries: Identifying Challenges and Opportunities Related to the Creation of a Digital Geologic Map of the United States by the End of This Decade (Posters)Sunday, 9 October 20229:00 AM - 1:00 PMExhibit Hall F
2021
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DETRITAL ZIRCON RECORD OF CORDILLERAN MAGMATISM AS PRESERVED BY JURASSIC-PALEOCENE FOREARC AND FORELAND BASINS OF THE NORTH AMERICAN CORDILLERA
T143 Insights into Cordilleran Tectonics and Magmatism from the Sedimentary RecordTuesday, 12 October 20218:00 AM - 12:00 PMPortland Ballroom 255 (Hybrid Room)
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PRELIMINARY 1:48,000-SCALE GEOLOGIC MAP OF THE SPOTTED RANGE AND ADJACENT AREAS, SOUTH-CENTRAL NEVADA, USA
T96 Cenozoic Tectonism, Magmatism, Sedimentation, and Landscape Evolution in the Intermountain West (Posters)Monday, 11 October 20219:00 AM - 1:00 PMExhibit Hall A
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RECORD OF PALEOGENE SEDIMENTARY BASIN AND FLUVIAL SYSTEM DEVELOPMENT IN SOUTHERN NEVADA, USA
T34 Cenozoic Tectonism, Magmatism, Sedimentation, and Landscape Evolution in the Intermountain West IISunday, 10 October 20211:30 PM - 5:30 PMPortland Ballroom 257 (Hybrid Room)
2020
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MODIFIED GEOLOGIC MAPPING SCHEMA (GEMS) FOR REGIONAL GEOLOGIC MAP COMPILATION: AN EXAMPLE FROM THE USGS GEOLOGIC FRAMEWORK OF THE INTERMOUNTAIN WEST PROJECT
13 Geologic Maps and GIS—The Foundation of Research and Exploration (Posters)Tuesday, 5 May 20208:30 AM - 4:30 PMBallroom A
2019
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A NEW MODEL FOR DIGITAL, INTEGRATED REGIONAL GEOLOGIC MAPS AND ASSOCIATED SUBSURFACE MODELS OF THE INTERMOUNTAIN WEST, USA
T28 Geologic Maps and Their Derivatives (Posters)Sunday, 22 September 20199:00 AM - 5:30 PMHall AB, North Building
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EXPLORING THE SPATIAL AND TEMPORAL VARIABILITY OF FAULT ACTIVITY ALONG THE SANGRE DE CRISTO RANGE WITH LOW-TEMPERATURE THERMOCHRONOLOGY, RIVER PROFILE INVERSIONS, AND ANALYSIS OF FAULT SCARP MORPHOLOGY
T51 Exploring Connections between Extension, Sedimentation, and Volcanism in the Rio Grande Rift (Posters)Sunday, 22 September 20199:00 AM - 5:30 PMHall AB, North Building
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RECONSTRUCTING MIOCENE PALEOGEOGRAPHY OF THE MIDDLEGATE AND EASTGATE BASINS, NV THROUGH GEOLOGIC MAPPING AND SEDIMENTARY PROVENANCE ANALYSIS
T65 Advances in Using Sedimentary Data to Constrain the Timing and Rates of Geologic Events and Processes IISunday, 22 September 20191:30 PM - 5:30 PMRoom 222BC, North Building
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TWO-PHASE CENOZOIC EXTENSION IN THE STILLWATER RANGE AND DIXIE VALLEY, NEVADA
2 Cordilleran Tectonics from the Basin and Range to Alaska and the Arctic I: A Celebration of Elizabeth Miller’s Career (2018 GSA Structure and Tectonics Division Career Contribution Award)Wednesday, 15 May 20198:00 AM - 12:00 PMRoom B117-119
2018
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INTERPRETATION OF LOW-TEMPERATURE THERMOCHRONOMETER AGES FROM TILTED NORMAL FAULT BLOCKS
T113 EARTHTIMEs and EarthRates: Exploring the Tempo and Mode of Earth-System Processes and Evolution (Posters)Monday, 5 November 20189:00 AM - 6:30 PMHalls J-K
2017
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ARCHITECTURE AND GENESIS OF HYDROTHERMAL SYSTEMS IN TILTED MID-CENOZOIC CALDERAS, NORTHERN GREAT BASIN, USA
T237 System-Scale Zonation of Ore Systems: Insights into 3D Architecture from Lateral and Deep Exposures Due to Mining and Structural DeformationTuesday, 24 October 20171:30 PM - 5:30 PMYakima 1
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LONG-TERM OFFSET HISTORY OF THE CENTRAL SAN ANDREAS FAULT SYSTEM: NEW INSIGHTS INTO OLD QUESTIONS USING SEDIMENTARY SYSTEMS ANALYSIS
T55 Multi-Proxy Records for Large-Scale Translation and Vertical Strain along Active and Ancient Strike-Slip Fault SystemsSunday, 22 October 20171:30 PM - 5:30 PMTahoma 3
2016
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MAGMATIC-HYDROTHERMAL HISTORIES OF MIOCENE EPITHERMAL GOLD-SILVER DEPOSITS IN THE TONOPAH AND DIVIDE DISTRICTS, WESTERN NEVADA
268 Economic GeologyWednesday, 28 September 20168:00 AM - 12:00 PMRoom 301
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ERUPTIVE HISTORY, GEOCHRONOLOGY, AND POST-ERUPTION STRUCTURAL EVOLUTION OF THE LATE EOCENE HALL CREEK CALDERA, TOIYABE RANGE, NEVADA
89 Recent Advances in Volcanology: Volcanic PhenomenaMonday, 26 September 20168:00 AM - 12:00 PMRoom 503
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SULFIDE SATURATION IN MAGMAS ASSOCIATED WITH PRECIOUS METAL DEPOSITION AND QUARTZ-ALUNITE ALTERATION AT GOLDFIELD AND OTHER DISTRICTS IN THE ANCESTRAL CASCADES MAGMATIC ARC, CA-NV
T32 Magmatic-Hydrothermal Ore Deposits: Metal Transport from Source to SinkSunday, 25 September 20161:30 PM - 5:30 PMRoom 301
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MAXIMUM DEPOSITIONAL AGES AND PROVENANCE FROM DETRITAL ZIRCONS COMPARED TO PALEONTOLOGIC AGES AND IMPLICATIONS FOR DEFORMATION TIMING, LOWER GREAT VALLEY SEQUENCE, KNOXVILLE TO LAKE BERRYESSA, WEST OF SACRAMENTO VALLEY, CA
5 Sedimentology and Stratigraphy (Posters)Monday, 4 April 20168:30 AM - 5:30 PMBallroom C
2014
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40AR/39AR AND U-PB AGES OF SILICIC IGNIMBRITES, CALDERAS, AND GRANITIC PLUTONS, SOUTHERN STILLWATER RANGE AND CLAN ALPINE MOUNTAINS, NEVADA: LINKAGES BETWEEN VOLCANIC AND PLUTONIC ROCKS
T343 Cenozoic Magmatism and Volcanism in the North American CordilleraWednesday, 22 October 20141:00 PM - 5:00 PM306
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ION MICROPROBE STUDY OF AU AND TRACE METALS IN SULFIDE MELT INCLUSIONS FROM A RHYOLITE PORPHYRY INTRUSION IN THE CAETANO CALDERA, NEVADA
T180 Continental Arcs #3: Mapping the Temporal and Compositional Evolution of Subvolcanic Magmatic SystemsTuesday, 21 October 20148:00 AM - 12:00 PM118
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TESTING FAULT GROWTH MODELS WITH LOW-TEMPERATURE THERMOCHRONOLOGY IN NORTHWEST NEVADA
T64 The Structure of Faults from Top to Bottom: Implication for Fluid Flow, Ore Deposits, and Seismic Hazard IISunday, 19 October 20141:00 PM - 5:00 PM118
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SHRIMP U-PB DATING OF ZIRCON REVEALS OLIGOCENE, LATE CRETACEOUS, AND LATE JURASSIC AGES IN TROY GRANITE, EAST-CENTRAL NEVADA
17 Snoke Session 1: The Eclectic Tectonic Legacy of Arthur W. Snoke—Metamorphic Core Complexes at Age 35 (Posters)Tuesday, 20 May 20148:00 AM - 5:00 PMBallroom B, C, D
2013
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DISSECTED CALDERA PROVIDES A WINDOW INTO THE LINKED VOLCANIC-PLUTONIC ORIGINS OF THE 34 MA CAETANO TUFF SUPERERUPTION, NEVADA
T119 What Can We Learn About Plutons From Volcanic Rocks and What Can We Learn About Volcanoes From Plutonic Rocks?Wednesday, 30 October 20138:00 AM - 12:00 PMRoom 603
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TEMPORAL ASSOCIATION OF MIDDLE MIOCENE BASIN AND RANGE EXTENSION AND COLUMBIA RIVER FLOOD BASALT VOLCANISM: IMPLICATIONS FOR TECTONIC MODELS OF THE YELLOWSTONE HOTSPOT
T85 Evolving Understanding of Extensional Provinces: Advancements and ChallengesSunday, 27 October 20131:00 PM - 5:00 PMRoom 507
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THE DISPARATE RECORD OF UPPER-CRUSTAL EXTENSION AND MID-CRUSTAL EXHUMATION IN AND AROUND THE RUBY-EAST HUMBOLDT METAMORPHIC CORE COMPLEX, NORTHEASTERN NEVADA, USA
T85 Evolving Understanding of Extensional Provinces: Advancements and ChallengesSunday, 27 October 20131:00 PM - 5:00 PMRoom 507
2011
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TWO-STAGE MODEL FOR EXHUMATION OF THE RUBY MOUNTAINS - EAST HUMBOLDT METAMORPHIC CORE COMPLEX, NORTHEASTERN NEVADA
2 From Contraction to Extension: The Mesozoic to Cenozoic Tectonic Evolution of the Northern Great Basin IWednesday, 18 May 20118:00 AM - 12:00 PMWillow
2010
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CRUSTAL STRUCTURE ADJACENT TO THE SAN ANDREAS FAULT FROM CHOLAME VALLEY TO THE NORTHERN CARRIZO PLAIN, CENTRAL CALIFORNIA
29 New Insights into Tectonics of the Central California Coast Ranges—The Link between Los Angeles and San Francisco (Posters)Friday, 28 May 20108:30 AM - 12:00 PMPlatinum 5-6
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NEW INSIGHTS INTO THE TECTONICS OF THE CENTRAL CALIFORNIA COAST RANGES FROM CROSS-SECTIONS BASED ON DIGITAL GEOLOGIC MAPPING AND POTENTIAL-FIELD GEOPHYSICS
31 New Insights into Tectonics of the Central California Coast Ranges—The Link between Los Angeles and San FranciscoFriday, 28 May 20101:30 PM - 5:00 PMPlatinum 3
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IMPLICATIONS OF CUMULATIVE OFFSETS ALONG THE SAN GREGORIO-HOSGRI FAULT, CALIFORNIA: WHY THE SANTA MARIA BASIN MATTERS
31 New Insights into Tectonics of the Central California Coast Ranges—The Link between Los Angeles and San FranciscoFriday, 28 May 20101:30 PM - 5:00 PMPlatinum 3
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A THREE-DIMENSIONAL GEOLOGIC MAP OF THE CENTRAL CALIFORNIA COAST RANGES
29 New Insights into Tectonics of the Central California Coast Ranges—The Link between Los Angeles and San Francisco (Posters)Friday, 28 May 20108:30 AM - 12:00 PMPlatinum 5-6
2009
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THE EVOLUTION AND TECTONIC SETTING OF THE EOCENE-MIOCENE IGNIMBRITE FLARE-UP OF THE GREAT BASIN, NEVADA AND UTAH
248 Volcanology (Posters)Wednesday, 21 October 20099:00 AM - 6:00 PMHall A
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EVOLUTION OF THE NORTHWESTERN MARGIN OF THE BASIN AND RANGE: INSIGHTS FROM NEW GEOLOGIC MAPPING IN NORTHEASTERN CALIFORNIA
T105 Neoproterozoic through Cretaceous Evolution of the North American Cordilleran Margin: Contrasting Tectonics, Paleogeography, and Paleoenvironments (Posters)Monday, 19 October 20099:00 AM - 6:00 PMHall A
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POST-EOCENE EXTENSION IN THE NORTHERN SHOSHONE RANGE, NEVADA
37 Tectonics: Advances in Understanding Tectonics and Orogenesis Ancient and Modern (Posters)Sunday, 18 October 20099:00 AM - 6:00 PMHall A
2007
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THE NORTHWESTERN BOUNDARY OF THE BASIN AND RANGE PROVINCE: INSIGHTS AND SURPRISES REGARDING ITS EVOLUTION BASED ON EARTHSCOPE REFRACTION, TELESEISMIC, POTENTIAL FIELD AND GEOLOGIC DATA
T229 A Synoptic Crustal Section from the Cascadia Margin to the Southern Appalachians: Focusing EarthScope Research on Crustal Domains, their Boundaries, and Fundamental Processes of the U.S. ContinentWednesday, 31 October 20071:30 PM - 5:30 PM
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INSIGHT INTO THE EVOLUTION OF A MAJOR BASIN AND RANGE NORMAL FAULT THROUGH COMBINED GEOLOGICAL AND SEISMOLOGICAL INVESTIGATION
T15 Combining Geophysics and Geology to Solve Geoscience Problems ISunday, 28 October 20078:00 AM - 12:00 PM
2006
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MULTIPLE EPISODES OF EXTENSION ACROSS THE EAST RANGE, NEVADA, A TERTIARY EXTENSIONAL TRANSITION ZONE IN THE NORTHERN BASIN AND RANGE PROVINCE
170 Structural Geology (Posters)Tuesday, 24 October 20061:30 PM - 5:30 PM
Date Unknown
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RAPID MIDDLE MIOCENE UNROOFING OF THE SOUTHERN RUBY MOUNTAINS, NEVADA
171 Tectonics (Posters)
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Detrital Zircon Geochronology of Paleocene/Eocene Turbidites from Venezuela and Offshore Islands: Implications for Late Cretaceous Subduction Initiation along the Leeward Antilles and Aves Ridge
T154 Late Jurassic to Recent Geodynamic Evolution of the Caribbean Region (Posters)