---

Activity

2014

• A U.S. NATIONAL PERSPECTIVE ON THE LEAD CONTENT OF SOILS
  T190 Trace Elements and Organics in Environmental and Urban Geochemistry II
  Tuesday, 21 October 2014

  8:00 AM - 12:00 PM

  204
• DISTRIBUTION OF PB, CD, CR, CU, ZN, NI, AND BA IN SOILS OF THE CONTERMINOUS UNITED STATES
  T133 Trace Elements and Organics in Environmental and Urban Geochemistry(Posters)
  Monday, 20 October 2014

  9:00 AM - 6:30 PM

  Exhibition Hall C

---

2013

• MAPPING THE DISTRIBUTION OF ARSENIC IN SOILS OF THE CONTERMINOUS UNITED STATES
  T391 Geochemical Mapping at Regional to Continental Scales
  Wednesday, 30 October 2013

  1:00 PM - 5:00 PM

  Room 601
• MIXTURE-MODEL CLUSTERING OF REGIONAL GEOCHEMICAL DATA
  T391 Geochemical Mapping at Regional to Continental Scales
  Wednesday, 30 October 2013

  1:00 PM - 5:00 PM

  Room 601
• NEW SOIL GEOCHEMISTRY AND MINERALOGY FOR THE CONTERMINOUS UNITED STATES
  T391 Geochemical Mapping at Regional to Continental Scales
  Wednesday, 30 October 2013

  1:00 PM - 5:00 PM

  Room 601
• A DYNAMIC DATABASE FOR GEOCHEMICAL AND MINERALOGICAL DATA FOR SOILS OF THE CONTERMINOUS UNITED STATES COLLECTED FOR THE USGS GEOCHEMICAL LANDSCAPES PROJECT
  T391 Geochemical Mapping at Regional to Continental Scales
  Wednesday, 30 October 2013

  1:00 PM - 5:00 PM

  Room 601
• LOW-DENSITY GEOCHEMICAL SURVEY IN SUB-CELL FROM STATE OF SÃO PAULO, BRAZIL
  T345 Geochemical Mapping at Regional to Continental Scales (Posters)
  Wednesday, 30 October 2013

  9:00 AM - 6:30 PM

  Hall D
• CHARACTERIZATION AND CLASSIFICATION OF SOIL GEOCHEMISTRY WITHIN THE CONTERMINOUS UNITED STATES
  T391 Geochemical Mapping at Regional to Continental Scales
  Wednesday, 30 October 2013

  1:00 PM - 5:00 PM

  Room 601

---

2012

• USING QUANTITATIVE MINERALOGY TO ENHANCE INTERPRETATIONS OF NATIONAL-SCALE PATTERNS OF TRACE ELEMENT DISTRIBUTIONS IN SOIL—RESULTS FROM THE USGS SOIL GEOCHEMICAL AND MINERALOGIC SURVEY OF THE CONTERMINOUS UNITED STATES
  T162 Sources, Transport, Fate, and Toxicology of Trace Elements and Organics in the Environment (Posters)
  Tuesday, 6 November 2012

  9:00 AM - 6:00 PM

  Hall B
• SOIL GEOCHEMISTRY AND MINERALOGY FOR THE CONTERMINOUS UNITED STATES – THE USGS GEOCHEMICAL LANDSCAPES SOIL SURVEY
  T162 Sources, Transport, Fate, and Toxicology of Trace Elements and Organics in the Environment (Posters)
  Tuesday, 6 November 2012

  9:00 AM - 6:00 PM

  Hall B

---

2011

• DISTRIBUTION OF TRACE AND POTENTIALLY TOXIC ELEMENTS IN SOILS AT THE NATIONAL SCALE – THE USGS GEOCHEMICAL LANDSCAPES PROJECT
  T40 Sources, Transport, and Fate of Trace and Toxic Elements in the Environment (Posters)
  Sunday, 9 October 2011

  9:00 AM - 6:00 PM

  Hall C

---

2010

• ARSENIC DISTRIBUTION IN SOILS OF THE UNITED STATES AND CANADA
  T233 Arsenic in Geologic Systems I
  Wednesday, 3 November 2010

  8:00 AM - 12:00 PM

  Room 612
• ROCKS IN THE ATTIC AND DIRT IN THE GARAGE: WHY DO WE KEEP ALL OF THIS STUFF?
  T66 Successes and Societal Benefits of Data Preservation
  Sunday, 31 October 2010

  1:30 PM - 5:30 PM

  Hall F

---

2008

• The North American Soil Geochemical Landscapes Project: Overview, Goals, Progress
  T325 Soil Geochemistry: Databases and Applications at Regional to Continental Scales
  Wednesday, 8 October 2008

  1:30 PM - 5:30 PM
• Potential of Mid- and Near-Infrared Diffuse Reflectance Spectroscopy for Determining Major- and Trace-Element Concentrations in Soils from a Geochemical Survey of North America Based on a Continental Scale Transect
  T325 Soil Geochemistry: Databases and Applications at Regional to Continental Scales
  Wednesday, 8 October 2008

  1:30 PM - 5:30 PM
• Continental-Scale Patterns in Soil Geochemistry and Mineralogy: Results from Two Transects across the United States and Canada
  T325 Soil Geochemistry: Databases and Applications at Regional to Continental Scales
  Wednesday, 8 October 2008

  1:30 PM - 5:30 PM
• A Regional Soil and Sediment Geochemical Study in Northern California
  T325 Soil Geochemistry: Databases and Applications at Regional to Continental Scales
  Wednesday, 8 October 2008

  1:30 PM - 5:30 PM
• Geochemical transect of Alaska--the chemical weathering of soil as it relates to climate and biota
  T325 Soil Geochemistry: Databases and Applications at Regional to Continental Scales
  Wednesday, 8 October 2008

  1:30 PM - 5:30 PM
• Importance of Consistent Protocols for National and International Projects
  T325 Soil Geochemistry: Databases and Applications at Regional to Continental Scales
  Wednesday, 8 October 2008

  1:30 PM - 5:30 PM

---

2007

• SOIL GEOCHEMISTRY OF THE DENVER METROPOLITAN AREA: MAPPING CHANGE FROM 1972 TO 2005
  T6 Denver Then and Now: From Paleontology to Public Policy on the Front Range Urban Corridor
  Sunday, 28 October 2007

  8:00 AM - 12:00 PM

---

2006

• GEOCHEMICAL LANDSCAPES OF ALASKA
  28 GSA: High Latitude/Altitude Hydrogeology in Mineralized and Unmineralized Regions (Posters)
  Tuesday, 9 May 2006

  1:00 PM - 5:00 PM

---

2005

• CHEMICAL VARIATION IN A- AND C-HORIZON SOIL ALONG TWO NORTH AMERICAN CONTINENTAL TRANSECTS
  156 Environmental Geoscience (Posters)
  Tuesday, 18 October 2005

  8:00 AM - 12:00 PM
• CHROMIUM, NICKEL, AND LEAD IN SOILS OF NORTHERN CALIFORNIA: SOURCES AND BIOACCESSIBILITY
  T73 Sources, Transport, Fate, and Toxicology of Trace Elements in the Environment
  Monday, 17 October 2005

  8:00 AM - 12:00 PM

---

2003

• THE U.S. GEOLOGICAL SURVEY’S NATIONAL GEOCHEMICAL DATABASE
  T139 Geological and Geophysical Databases: What We Have and What We Need I
  Tuesday, 4 November 2003

  8:00 AM - 12:00 PM
• A PROPOSED CONTINENTAL-SCALE SOIL GEOCHEMICAL SURVEY OF NORTH AMERICA: ESTABLISHING A DATABASE FOR THE 21ST CENTURY
  T50 Soils and a Sustainable Future—The Neglected Challenge in Geology: A Tribute to the Many Contributions and Challenges of Aldo Leopold
  Sunday, 2 November 2003

  1:00 PM - 3:45 PM

---

Date Unknown

• Application of Physiologically Based Extraction Tests to Evaluate Metal Bioaccessibility In a Continental-Scale Soil Geochemical Survey
  T307 Soil Geochemistry: Databases and Applications at Regional to Continental Scales (Posters)