### The geochemical atlas of Alaska, 2016

By: Gregory K. LeeDouglas B. Yager**Jeffrey L. Mauk**Matthew Granitto**Paul DenningBronwen Wang**Melanie B. Werdon

                            https://doi.org/10.3133/ds908

#### Links

-                                                                                                                             Document:                                                                                                                                                                                                                                                  **Report**                                                                                                     (79.6 MB pdf)                                                                                                                                     
- Sheets:                               - **Aluminum (Al)**                            (209 MB zip)                        
  - **Antimony (Sb)**                            (175 MB zip)                        
  - **Arsenic (As)**                            (213 MB zip)                        
  - **Barium (Ba)**                            (210 MB zip)                        
  - **Beryllium (Be)**                            (197 MB zip)                        
  - **Bismuth (Bi)**                            (184 MB zip)                        
  - **Boron (B)**                            (178 MB zip)                        
  - **Cadmium (Cd)**                            (175 MB zip)                        
  - **Calcium (Ca)**                            (213 MB zip)                        
  - **Carbon (C)**                            (133 MB zip)                        
  - **Cerium (Ce)**                            (208 MB zip)                        
  - **Cesium (Cs)**                            (200 MB zip)                        
  - **Chlorine (Cl)**                            (190 MB zip)                        
  - **Chromium (Cr)**                            (215 MB zip)                        
  - **Cobalt (Co)**                            (215 MB zip)                        
  - **Copper (Cu)**                            (213 MB zip)                        
  - **Dysprosium (Dy)**                            (199 MB zip)                        
  - **Erbium (Er)**                            (141 MB zip)                        
  - **Europium (Eu)**                            (209 MB zip)                        
  - **Fluorine ( F)**                            (131 MB zip)                        
  - **Gadolinium (Gd)**                            (139 MB zip)                        
  - **Gallium (Ga)**                            (187 MB zip)                        
  - **Germanium (Ge)**                            (142 MB zip)                        
  - **Gold (Au)**                            (169 MB zip)                        
  - **Hafnium (Hf)**                            (203 MB zip)                        
  - **Holmium (Ho)**                            (159 MB zip)                        
  - **Indium (In)**                            (139 MB zip)                        
  - **Iron (Fe)**                            (214 MB zip)                        
  - **Lanthanum (La)**                            (212 MB zip)                        
  - **Lead (Pb)**                            (212 MB zip)                        
  - **Lithium (Li)**                            (197 MB zip)                        
  - **Lutetium (Lu)**                            (204 MB zip)                        
  - **Magnesium (Mg)**                            (213 MB zip)                        
  - **Manganese (Mn)**                            (215 MB zip)                        
  - **Mercury (Hg)**                            (181 MB zip)                        
  - **Molybdenum (Mo)**                            (201 MB zip)                        
  - **Neodymium (Nd)**                            (185 MB zip)                        
  - **Nickel (Ni)**                            (213 MB zip)                        
  - **Niobium (Nb)**                            (211 MB zip)                        
  - **Palladium (Pd)**                            (144 MB zip)                        
  - **Phosphorous (P)**                            (191 MB zip)                        
  - **Platinum (Pt)**                            (145 MB zip)                        
  - **Potassium (K)**                            ( 210 MB zip)                        
  - **Praseodymium (Pr)**                            (142 MB zip)                        
  - **Rubidium (Rb)**                            (196 MB zip)                        
  - **Samarium (Sm)**                            (201 MB zip)                        
  - **Scandium (Sc)**                            (211 MB zip)                        
  - **Selenium (Se)**                            (191 MB zip)                        
  - **Silicon (Si)**                            (135 MB zip)                        
  - **Silver (Ag)**                            (168 MB zip)                        
  - **Sodium (Na)**                            (208 MB zip)                        
  - **Strontium (Sr)**                            (209 MB zip)                        
  - **Sulfur (S)**                            (139 MB zip)                        
  - **Tantalum (Ta)**                            (163 MB zip)                        
  - **Tellurium (Te)**                            (137 MB zip)                        
  - **Terbium (Tb)**                            (174 MB zip)                        
  - **Thallium (Tl)**                            (147 MB zip)                        
  - **Thorium (Th)**                            (209 MB zip)                        
  - **Thulium (Tm)**                            (139 MB zip)                        
  - **Tin (Sn)**                            (163 MB zip)                        
  - **Titanium (Ti)**                            (214 MB zip)                        
  - **Tungsten (W)**                            (179 MB zip)                        
  - **Uranium (U)**                            (206 MB zip)                        
  - **Vanadium (V)**                            (212 MB zip)                        
  - **Ytterbium (Yb)**                            (209 MB zip)                        
  - **Yttrium (Y)**                            (198 MB zip)                        
  - **Zinc (Zn)**                            (218 MB zip)                        
  - **Zirconium (Zr)**                            (210 MB zip) 
- Tables:                               - **Table 1**                            (16 kB xlsx)                        
  - **Table 2**                            (2.67 MB xlsx) 
- Figure:  **Full-sized Figures**                            (253 MB zip)                        
- Data Releases:                               - **Data Supporting The Geochemical Atlas of Alaska, 2016**                            (287 MB shapefile)                        
  - **USGS data release**  - Data Supporting The Geochemical Atlas of Alaska, 2016 
- Metadata:  **Metadata**                            (182 kB zip)                        
- Read Me:  **Read Me**                            (12 kB txt)                        
- Download citation as:  RIS                         |                         Dublin                            Core

#### Abstract

First posted June 21, 2016

**For additional information, contact:**
Center DirectorUSGS Central Mineral and Environmental Resources Science Center Box 25046, MS-973 Denver Federal Center Denver, CO 80225-0046http://minerals.cr.usgs.gov

A rich legacy of geochemical data produced since the early 1960s covers the great expanse of Alaska; careful treatment of such data may provide significant and revealing geochemical maps that may be used for landscape geochemistry, mineral resource exploration, and geoenvironmental investigations over large areas. To maximize the spatial density and extent of data coverage for statewide mapping of element distributions, we compiled and integrated analyses of more than 175,000 sediment and soil samples from three major, separate sources: the U.S. Geological Survey, the National Uranium Resource Evaluation program, and the Alaska Division of Geological & Geophysical Surveys geochemical databases. Various types of heterogeneity and deficiencies in these data presented major challenges to our development of coherently integrated datasets for modeling and mapping of element distributions. Researchers from many different organizations and disparate scientific studies collected samples that were analyzed using highly variable methods throughout a time period of more than 50 years, during which many changes in analytical techniques were developed and applied. Despite these challenges, the U.S. Geological Survey has produced a new systematically integrated compilation of sediment and soil geochemical data with an average sample site density of approximately 1 locality per 10 square kilometers (km2) for the entire State of Alaska, although density varies considerably among different areas. From that compilation, we have modeled and mapped the distributions of 68 elements, thus creating an updated geochemical atlas for the State.

 

#### Suggested Citation

Lee, G.K., Yager, D.B., Mauk, J.L, Granitto, Matthew, Denning, P.D., Wang, Bronwen, and Werdon, M.B., 2016, The Geochemical Atlas of Alaska, 2016: U.S. Geological Survey Data Series 908, 25 p., 272 sheets (11"×17"), GIS database, http://dx.doi.org/10.3133/ds908.

ISSN: 2327-638X (online)

#### Study Area

#### Table of Contents

- Abstract
- Introduction
- Methods
- Explanation of Map Sheets and Figures
- Data Delivery
- Discussion and Conclusions
- Acknowledgments
- References Cited

Part or all of this report is presented in Portable Document Format                        (PDF). For best results viewing and printing PDF documents, it is recommended that you download                        the documents to your computer and open them with Adobe Reader. PDF documents opened from your                        browser may not display or print as intended. Download the latest version of Adobe Reader, free of charge. More information                        about viewing, downloading, and printing report files can be found at the common download problems FAQ.

Part of this report is presented in Microsoft Excel format (XLSX); the                        latest version of Excel Viewer is required to view it. Download the latest version of Excel Viewer, free                        of charge.