John E. Gray
U.S. Geological Survey, Denver, CO
Activity
2013
-
TRANSPORT OF MERCURY FROM A MINED AREA AND UPTAKE OF MERCURY BY FISH IN THE TIBER RIVER, ITALY
32 Environmental Geoscience (Posters)Sunday, 27 October 20139:00 AM - 6:30 PMHall D
2010
-
TRACING ANTHROPOGENIC CONTAMINATION IN A LAKE SEDIMENT CORE USING HG, PB, AND ZN ISOTOPIC COMPOSITIONS
26 Geochemistry Geology (Posters)Sunday, 31 October 20108:00 AM - 6:00 PMHall D
2008
-
Mercury Methylation Influenced by Eutrophic Conditions in Salmon Falls Creek Reservoir, Idaho
247 Environmental Geoscience (Posters)Tuesday, 7 October 20088:00 AM - 6:00 PM
2007
-
EVALUATION OF MERCURY CONTAMINATION IN MINE WASTE, SEDIMENT, WATER, AND AIR AT THE MARISCAL MINE, BIG BEND NATIONAL PARK, TEXAS
T189 Geological, Geophysical, Geochemical, and Environmental Studies in Big Bend National Park and the Trans-Pecos Region, TexasWednesday, 31 October 20078:00 AM - 12:00 PM
2006
-
EMISSIONS OF MERCURY FROM MINES IN THE TERLINGUA MERCURY DISTRICT IN AND AROUND BIG BEND NATIONAL PARK, TEXAS
T10 Geology in the National Parks: Research, Mapping, and Resource ManagementSunday, 22 October 20068:00 AM - 12:00 PM
-
GEOCHEMICAL STUDIES OF HOT SPRINGS, GROUND WATER, AND STREAM WATER IN BIG BEND NATIONAL PARK, TEXAS
T10 Geology in the National Parks: Research, Mapping, and Resource ManagementSunday, 22 October 20068:00 AM - 12:00 PM
2004
-
MERCURY CONTAMINATION FROM SMALL-SCALE ARTISANAL GOLD MINES IN SURINAME
242 Environmental Geoscience (Posters) IIWednesday, 10 November 20041:30 PM - 5:30 PM
-
MERCURY AND METHYLMERCURY IN MINE WASTES AND DOWNSTREAM SEDIMENTS FROM ABANDONED MERCURY MINES IN AND AROUND BIG BEND NATIONAL PARK, TEXAS
T45 Geology in the National Parks: Research, Mapping, and Resource Management IISunday, 7 November 20041:30 PM - 5:30 PM
2002
-
MERCURY SPECIATION AND TRANSFORMATION IN MINE WASTES COLLECTED FROM ABANDONED MERCURY MINES IN THE USA
T127 Mining in the Twenty-First Century: Meeting the Environmental ChallengesTuesday, 29 October 20028:00 AM - 12:00 PM
Date Unknown
-
MERCURY SPECIATION IN SOIL SAMPLES FROM THE MARISCAL MERCURY MINE, BIG BEND NATIONAL PARK, TEXAS
T195 Geology in the National Parks: Research, Mapping, and Resource Management (Posters)
-
EVALUATION OF SURFICIAL MERCURY GEOCHEMISTRY IN MINE WASTE, SEDIMENT, AND WATER AT THE ALMADEN MERCURY MINE, SPAIN
116 Environmental Geoscience (Posters) II
-
MERCURY METHYLATION AND DEMETHYLATION IN SOILS NEAR ABANDONED MERCURY MINES IN ALASKA, USA
151 Environmental Geoscience (Posters)