Racheal Johnsen
University of Nevada, Las Vegas, Las Vegas, NV
Activity
2023
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MULTIPHASE DEFORMATIONAL HISTORY OF THE SADDLE ISLAND METAMORPHIC CORE COMPLEX IN THE NORTHERN COLORADO RIVER EXTENSIONAL CORRIDOR, NEVADA
T174 Unravelling Timescales of Magmatism, Metamorphism, and Crustal Evolution (Posters)Tuesday, 17 October 20238:00 AM - 5:30 PMHall B
2022
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LATE MIOCENE TO QUATERNARY SILICIC VOLCANISM IN THE WALKER LANE: AN EXAMPLE FROM THE GREENWATER RANGE, CALIFORNIA
27 The Tectono-Magmatic Evolution of the Basin and Range Province II: A Session in Honor of Ernie AndersonWednesday, 16 March 20221:30 PM - 5:30 PMCBC-A 106
2021
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THE POTENTIAL FOR BUILDING A LATE PLEISTOCENE TEPHROCHRONOLOGICAL FRAMEWORK FOR ARCHAEOLOGICAL SITES IN SOUTH AFRICA USING CRYPTOTEPHRA
T145 Reading the Record of Volcanic Tephra and Tuff in Geoarchaeological Site Studies and Drill Core RecordsTuesday, 12 October 20218:00 AM - 12:00 PMPortland Ballroom 253 (Hybrid Room)
2019
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FIRST REPORT OF CRYPTOTEPHRA FROM THE LAS VEGAS FORMATION, TULE SPRINGS FOSSIL BEDS NATIONAL MONUMENT, NEVADA
T55 Small-Volume Cenozoic Volcanism of the Interior West of the United StatesSunday, 22 September 20191:30 PM - 5:30 PMRoom 128AB, North Building
2018
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NEW U-PB ZIRCON AND 40AR/39AR CHRONOLOGY OF MAGMATISM IN THE LAKE MEAD AREA, NEVADA AND ARIZONA
28 Recent Advances in Basin-and-Range and Proterozoic Geology of the Western U.S. I: A Session Honoring Ernie DuebendorferWednesday, 16 May 201810:20 AM - 12:05 PMKaibab Room
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UPDATE ON THE TIMING, MAGNITUDE OF OFFSET, AND GEOMECHANICS OF THE SOUTHERN PART OF THE LAKE MEAD FAULT SYSTEM, NEVADA
28 Recent Advances in Basin-and-Range and Proterozoic Geology of the Western U.S. I: A Session Honoring Ernie DuebendorferWednesday, 16 May 201810:20 AM - 12:05 PMKaibab Room
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EVOLUTION OF THE GREENWATER RHYOLITE AND ADJACENT BASALT FIELD, GREENWATER RANGE, DEATH VALLEY, CALIFORNIA: NEW U-PB ZIRCON DATES AND MG-ISOTOPES
3 Tectonics of the Death Valley Region II: A Tribute to Bennie Troxel and Lauren WrightTuesday, 15 May 201810:20 AM - 12:05 PMCanyon Room
2015
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YOUNGEST TOBA TUFF (~74 KA) CRYPTOTEPHRA IDENTIFIED IN AN ARCHAEOLOGICAL SITE AT PINNACLE POINT, SOUTH AFRICA
233 Archaeological GeologyTuesday, 3 November 20151:30 PM - 5:30 PMRoom 318
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EXAMINING THE SPATIAL SCALE OF VARIATIONS IN TERRESTRIAL GAMMA-RAY BACKGROUND OVER INDIVIDUAL BEDROCK GEOLOGIC UNITS
T107 Sources, Transport, Fate, and Toxicology of Trace Elements and Organics in the Environment (Posters)Monday, 2 November 20159:00 AM - 6:30 PMExhibit Hall
2008
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DOME ERUPTION, COLLAPSE, AND PYROCLASTIC FLOWS OF A MID-MIOCENE VOLCANIC SECTION IN THE CENTRAL MCCULLOUGH RANGE, SOUTHERN NEVADA
30 Igneous/Metamorphic Petrology, and Volcanology (Posters)Friday, 21 March 20088:00 AM - 12:00 PM
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DEVELOPING GEOLOGICAL EDUCATIONAL MATERIALS FOR BLM'S SLOAN CANYON NATIONAL CONSERVATION AREA: PRESENTING THE MIOCENE VOLCANIC HISTORY OF THE NORTHERN MCCULLOUGH MOUNTAINS, SOUTHERN NEVADA TO THE PUBLIC
29 New Developments in Earth Science EducationFriday, 21 March 20088:00 AM - 12:00 PM
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A NEW 3-DIMENSIONAL VIEW OF THE MID-MIOCENE VOLCANIC AND PLUTONIC ROCKS OF THE RIVER MOUNTAINS, SOUTHERN NEVADA
1 Igneous/Metamorphic Petrology, and VolcanologyWednesday, 19 March 20088:00 AM - 12:00 PM
Date Unknown
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EVIDENCE FOR DOME COLLAPSE AND COEVAL MAFIC-FELSIC VOLCANISM IN THE CENTRAL MCCULLOUGH RANGE, NEVADA
15 Igneous Petrology, Volcanology, and Precambrian Geology (Posters)