Analytical method: UNKNOWN
| Technique | UNKNOWN |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | UNIVERSITY OF MINNESOTA, DEPARTMENT OF GEOLOGY, MINNEAPOLIS, MN 55455, USA |
| Reference | Anderson, R E (1977) Composite stratigraphic section of Tertiary volcanic rocks in the Eldorado Mountains, Nevada. Open-File Report - U. S. Geological Survey. 1977. |