A. Joshua West
University of Southern California, Los Angeles, CA
Activity
2024
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THE WEIGHT OF GOLD: PERUVIAN FORESTS PAY THE PRICE FOR ARTISANAL-SCALE MINING
98 D1. Recent Advances in Economic Geology (Posters)Monday, 23 September 20248:00 AM - 5:30 PMHall D
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DID ATMOSPHERIC CARBON DIOXIDE REALLY DECLINE IN THE LATE PALEOZOIC AS SUGGESTED BY CARBON CYCLE MODELS?
T33 New Advances in Geobiology (Posters)Sunday, 22 September 20248:00 AM - 5:30 PMHall D
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GEOCHEMICAL TRACERS TO INVESTIGATE WATERSHED AND PERMAFROST DYNAMICS IN ALASKA'S NORTH SLOPE
T39 The Cryosphere & Mountain Hydrology, Past and Present and Future (Posters)Sunday, 22 September 20248:00 AM - 5:30 PMHall D
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SPATIAL DECREASE OF LITHIUM ISOTOPES ALONG THE GHEZ RIVER AT THE TECTONICALLY ACTIVE NORTHEASTERN PAMIR PLATEAU
T34 Advances in Nontraditional Stable Isotope Measurements and Utility as Proxies in Modern and Paleo-Settings (Posters)Sunday, 22 September 20248:00 AM - 5:30 PMHall D
2020
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FLOODPLAIN ARCHITECTURE AND ORGANIC CARBON STORAGE IN DISCONTINUOUS PERMAFROST
T209 Geomorphic Processes and Change at High LatitudesThursday, 29 October 20201:30 PM - 5:30 PMMeeting Rooms
2019
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THE RECORD OF ENVIRONMENTAL CHANGE IN NORTHEASTERN PANTHALASSA DIRECTLY PRECEDING THE END-TRIASSIC MASS EXTINCTION EVENT
T247 Volcanism, Impacts, and Phanerozoic Mass Extinctions: Discovering a Common Cause and Planning for the 6th Mass Extinction IWednesday, 25 September 20198:00 AM - 12:00 PMRoom 227ABC, North Building
2018
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EARTH-LIFE TRANSITIONS WITHIN A CHRONOLOGIC FRAMEWORK: BIOGEOCHEMICAL CHANGE ASSOCIATED WITH THE END-TRIASSIC EXTINCTION FROM THE LEVANTO SECTION (NORTHERN PERU)
T235 Earth-Life Transitions: Critical Information from Deep Time to Manage Future Environmental ChangeWednesday, 7 November 20188:00 AM - 12:00 PMRoom 143-144
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LANDSLIDES DRIVE DRAINAGE DIVIDES TOWARD STEADY STATE
T172 Quantifying Geomorphic Processes and Rates of Landscape Evolution (Posters)Tuesday, 6 November 20189:00 AM - 6:30 PMHalls J-K
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HAZARD ASSESSMENT AND TOPOGRAPHIC CONTROL ON POST-SEISMIC DEBRIS FLOWS: INSIGHTS FROM THE 2015 GORKHA EARTHQUAKE
T131 Landscapes in the AnthropoceneMonday, 5 November 20181:30 PM - 5:30 PMRoom 136-137
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LITHIUM ISOTOPE COMPOSITIONS OF MODERN AND FOSSIL CENOZOIC BRACHIOPODS
T11 New Developments in Geochemical Proxies for Paleoceanographic ResearchSunday, 4 November 20188:00 AM - 12:00 PMRoom 140
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VARIABLE LIQUID DECARBONATION METHODS FOR Δ13CORG ANALYSES IN SEDIMENTARY SECTIONS AND ON MODERN SOILS AND RIVER SEDIMENTS
T36 New Developments in Geochemical Proxies for Paleoceanographic Research (Posters)Sunday, 4 November 20189:00 AM - 5:30 PMHalls J-K
2017
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MERCURY CONCENTRATIONS AND ISOTOPES FROM THE TRIASSIC-JURASSIC BOUNDARY: A LITHOLOGIC AND DEPOSITIONAL DISCUSSION
T331 Mercury in the Geologic RecordWednesday, 25 October 20171:30 PM - 5:30 PMRoom 607
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HG ISOTOPES AS TRACERS OF DEPOSITIONAL ENVIRONMENTS IN MARINE SEDIMENTS FROM THE PRECAMBRIAN TO THE PHANEROZOIC
T331 Mercury in the Geologic RecordWednesday, 25 October 20171:30 PM - 5:30 PMRoom 607
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NEW RECORD OF BIOTIC RESPONSE AND OF AN UNUSUAL CARBONATE SYSTEM FOR THE END-TRIASSIC MASS EXTINCTION AT FERGUSON HILL, NEVADA
T305 Impact of Extinction Events on the Ecological and Geochemical Functioning of Marine EcosystemsWednesday, 25 October 20178:00 AM - 12:00 PMRoom 608
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TESTING LIQUID DECARBONATION TEMPERATURE AND TIME FOR δ13CORG ANALYSES IN SEDIMENTARY SECTIONS
272 D17. Paleontology, Paleoecology/Taphonomy (Posters)Tuesday, 24 October 20179:00 AM - 6:30 PMHalls 4EF
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DECREASING WATER COLUMN DENITRIFICATION BEFORE THE END-TRIASSIC EXTINCTION? INSIGHT FROM STABLE NITROGEN ISOTOPES
T217 Deciphering the Major Paleoenvironmental Crises of the Earth and Their Impact on the Marine Ecosystems and Biogeochemical CyclesTuesday, 24 October 20178:00 AM - 12:00 PMRoom 307/308
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TIMING AND ALTERNATIVE ECOSYSTEM STATES FOLLOWING THE END-TRIASSIC MASS EXTINCTION (NEVADA, PERU, ENGLAND): INSIGHTS FROM HG ANOMALIES AND THEIR RELATIONSHIP TO THE CENTRAL ATLANTIC MAGMATIC PROVINCE
T217 Deciphering the Major Paleoenvironmental Crises of the Earth and Their Impact on the Marine Ecosystems and Biogeochemical CyclesTuesday, 24 October 20178:00 AM - 12:00 PMRoom 307/308
2016
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SHIFTING BIOGEOCHEMICAL DYNAMICS DURING THE LATE TRIASSIC AND EARLY JURASSIC: INSIGHT FROM STABLE CARBON AND NITROGEN RECORDS
T115 Sedimentary, Paleobiologic, and Geochemical Studies of Deep Time Ocean-Climate Perturbations I: Honoring the Scientific Contributions of Michael A. ArthurMonday, 26 September 20168:00 AM - 12:00 PMRoom 402
2015
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COSEISMIC LANDSLIDE HAZARDS AND GEOMORPHIC CONSEQUENCES OF THE MW 7.8 GORKHA EARTHQUAKE, NEPAL
105 GSA Special Nepal (Gorkha) Earthquake SessionMonday, 2 November 20158:00 AM - 12:00 PMRoom 345/346
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TIMING OF CARBON ISOTOPE EXCURSIONS DURING THE LATE TRIASSIC AND EARLY JURASSIC: NEW MODELING CONSTRAINTS FOR CARBON CYCLE PERTURBATIONS ASSOCIATED WITH THE EMPLACEMENT OF THE CENTRAL ATLANTIC MAGMATIC PROVINCE
T19 Mass Extinction Causality: Records of Anoxia, Acidification, and Global Warming during Earth's Greatest Crises ISunday, 1 November 20158:00 AM - 12:00 PMRoom 310
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MERCURY CONCENTRATIONS AND ISOTOPES AS TRACERS OF CAMP IN TRIASSIC-JURASSIC STRATA FROM MULLER CANYON, NEVADA
T19 Mass Extinction Causality: Records of Anoxia, Acidification, and Global Warming during Earth's Greatest Crises ISunday, 1 November 20158:00 AM - 12:00 PMRoom 310
2014
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HIGH RESOLUTION PALEOECOLOGY AND GEOCHEMISTRY ACROSS THE TRIASSIC/JURASSIC MASS EXTINCTION INTERVAL AND THE IMPORTANCE OF BIOSILICEOUS “GLASS RAMPS”
T160 Critical Earth-Life Transitions: The Marine PerspectiveMonday, 20 October 20141:00 PM - 5:00 PM114/115
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MOVING FORWARD WITH MARINE ISOTOPIC RECORDS GOING BACK IN TIME - WHAT INSIGHTS INTO CENOZOIC CONTINENTAL WEATHERING?
T76 Critical Earth-Life Transitions: The Terrestrial PerspectiveSunday, 19 October 20141:00 PM - 5:00 PM215/216
2013
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ANDEAN EVIDENCE FOR A LONG-TERM STATE SHIFT IN BENTHIC ECOLOGY FOLLOWING THE TRIASSIC/JURASSIC MASS EXTINCTION
T122 New Insights into Triassic-Jurassic Transition Events and End-Triassic Mass ExtinctionMonday, 28 October 20138:00 AM - 12:00 PMRoom 603
2010
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CORAL CONSTRAINTS ON ATMOSPHERIC CARBON DIOXIDE LEVELS AT THE TRIASSIC-JURASSIC BOUNDARY, A POTENTIAL OCEAN ACIDIFICATION EVENT
T131 Ocean Acidification and Other Societally Relevant Environmental Changes: Using the Past to Infer Our Future (Cushman Session)Monday, 1 November 20101:30 PM - 5:30 PMRoom 603
2009
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A NEW ESTIMATE OF THE RATE OF ACTIVE DEFORMATION AND THE DISCOVERY OF AN ANCIENT EARTHQUAKE RUPTURE IN THE MONGOLIAN ALTAY MOUNTAINS
T254 Structural Evolution and Timing of Orogenic Uplift in the Tertiary Mountain Ranges of Central Asia (Posters)Wednesday, 21 October 20099:00 AM - 6:00 PMHall A