Tracking the sources of metals to the San Juan River, Four Corners Region, USA: An introduction to the thematic issue
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Abstract
Surface water quantity and quality is important for arid and semi-arid regions where many people, including underserved and Indigenous communities, rely on a scarce resource for drinking water, irrigation, livestock and ceremonial uses. The southwestern United States, and specifically the Four Corners Region (Colorado, Arizona, New Mexico and Utah), is an example of this situation. Elevated concentrations of metals including aluminium, arsenic and lead were identified in previous studies and this study in the San Juan River from below the Navajo Dam, through the Navajo Nation to Mexican Hat, Utah. An interdisciplinary team applied approaches and principles of geology, geochemistry, geomorphology, hydrology and statistics to gain a better understanding of the tributaries supplying the source(s) of metals to the San Juan River. This introductory paper provides an overview of the ‘Metal geochemical fingerprinting to identify sub-watershed source contributions to surface water at a regional arid watershed scale, Four Corners Region, USA’ thematic collection. An overview of sampling sites, techniques and potential sources of metals is provided. Approaches used in this study could be applied to investigations in similar systems globally.
Suggested Citation
Blake, J., Austin, S.A., Johnson, F., Brown, J., Chavarria, S., Mixon, R., Van Zante, C., Wilkins, K., Whiting, M.R., Ferguson, C.L., Shephard, Z., Bosch, K., Austring, T.J., Ratigan, Z., Shomour, A.A., and Yager, D., 2025, Tracking the sources of metals to the San Juan River, Four Corners Region, USA: An introduction to the thematic issue: Geochemistry: Exploration, Environment, Analysis, v. 25, no. 4, geochem2024-027, 16 p., https://doi.org/10.1144/geochem2024-027.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Tracking the sources of metals to the San Juan River, Four Corners Region, USA: An introduction to the thematic issue |
| Series title | Geochemistry: Exploration, Environment, Analysis |
| DOI | 10.1144/geochem2024-027 |
| Volume | 25 |
| Issue | 4 |
| Publication Date | December 05, 2025 |
| Year Published | 2025 |
| Language | English |
| Publisher | Geological Society of London |
| Contributing office(s) | New Mexico Water Science Center |
| Description | geochem2024-027, 16 p. |
| State | Arizona, Colorado, New Mexico, Utah |
| Other Geospatial | Four Corners region |