Geologic Map of the Southern Stillwater Range, Nevada
Links
- Document: Pamphlet (2.71 MB pdf) , XML
- Sheets:
- Data Releases:
- USGS data release - Digital database of the geologic map of the southern Stillwater Range, Nevada
- USGS data release - Geochemical and geochronologic data from the Stillwater Range, Clan Alpine, and Desatoya Mountains, Nevada (ver. 3.0, December 2023)
- Download citation as: RIS | Dublin Core
Abstract
The southern Stillwater Range in west-central Nevada contains the western part of the Oligocene Stillwater-Clan Alpine caldera complex, which extends about 55 kilometers (km) east from the west side of the Stillwater Range to the northwestern Desatoya Mountains. The complex consists of at least seven nested ignimbrite calderas and subjacent plutonic rocks emplaced into a complex basement composed of Mesozoic metasedimentary and metavolcanic rocks and Cretaceous granitic plutons. The calderas formed during large-volume (100s to greater than (>) 2,500 cubic kilometers [km3]) eruptions of silicic ignimbrites between about 30.4 and 25.1 million years before present (Ma). The Job Canyon and Poco Canyon calderas and the western part of the much larger Elevenmile Canyon caldera, and their plutonic roots, are exposed in the southern Stillwater Range. There, the caldera complex was steeply tilted during large-magnitude crustal extension in the middle Miocene, and further exhumed during the late Miocene to Holocene Basin and Range extension that formed the modern Stillwater Range. This tilted crustal section affords an exceptional opportunity to view structural cross sections of ignimbrite calderas and their plutonic roots to paleodepths as much as 9–10 km.
Suggested Citation
John, D.A., Colgan, J.P., Berry, M.E., Henry, C.D., and Silberling, N.J., 2024, Geologic map of the southern Stillwater Range, Nevada: U.S. Geological Survey Scientific Investigations Map 3521, 2 sheets, scale 1:24,000, 39-p. pamphlet, https://doi.org/10.3133/sim3521.
ISSN: 2329-132X (online)
Study Area
Table of Contents
- Introduction
- Methods
- Stratigraphy
- Description of Map Units
- References Cited
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic map of the southern Stillwater Range, Nevada |
| Series title | Scientific Investigations Map |
| Series number | 3521 |
| DOI | 10.3133/sim3521 |
| Year Published | 2024 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston VA |
| Contributing office(s) | Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center |
| Description | Report: iv, 39 p.; 3 Sheets: 42.23 x 64.92 inches or smaller; 2 Data Releases |
| Country | United States |
| State | Nevada |
| Other Geospatial | Southern Stillwater Range |
| Google Analytic Metrics | Metrics page |