| Title | Geology of MacFarlane's Spring Thermal Area, Nevada |
|---|---|
| Authors | Sibbett, Bruce S.; Zeisloft, Jon; Bowers, Roger L. |
| Year | 1982 |
| Conference | Geothermal Resources Council Transactions |
| Keywords | Exploration; USA; Nevada; MacFarlane's Spring; Geologic Maps; Faults |
| Abstract | MacFarlane's Spring in northwestern Nevada is located near a recently active normal fault which has about 400 m of Quaternary offset. Tertiary basalt flows and tuffaceous sedimentary rocks near the spring have been faulted an tilted 22 to 40° to the east during the Tertiary. The 77° water flows from a 4 m high and 180 m long travertine mound. Associated eroded travertine veins which cut Lake Lahontan deposits and wave rounded travertine clasts indicate the hot spring has been active for thousands of years. Geothermometer calculation suggest a maximum reservoir temperatures of less than 140°C. |