Volcanic rocks of the eastern and northern parts of the San Francisco volcanic field, Arizona
Journal Article
·
· J. Res. U.S. Geol. Surv.; (United States)
OSTI ID:7223545
The eastern and northern parts of the San Francisco volcanic field, between San Francisco Mountain and the Little Colorado River, contain about 175 cinder cones, many with one or more associated lava flows, and one center of silicic volcanism, O'Leary Peak. Basaltic flows and cones are divided into five groups, primarily on the bases of stratigraphic and physiographic relations, degree of weathering and erosion, K-Ar and tree-ring age determinations, and, in part, chemical and petrographic data.
- OSTI ID:
- 7223545
- Journal Information:
- J. Res. U.S. Geol. Surv.; (United States), Journal Name: J. Res. U.S. Geol. Surv.; (United States) Vol. 4:5; ISSN JRGSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
15 GEOTHERMAL ENERGY
150201* -- Geology & Hydrology of Geothermal Systems-- USA-- (-1989)
58 GEOSCIENCES
580202 -- Geophysics-- Volcanology-- (1980-1989)
AGE ESTIMATION
ANDESITES
ARIZONA
BASALT
CHEMICAL COMPOSITION
IGNEOUS ROCKS
MAPS
NORTH AMERICA
RHYOLITES
ROCKS
USA
VOLCANIC REGIONS
VOLCANIC ROCKS
WESTERN REGION
150201* -- Geology & Hydrology of Geothermal Systems-- USA-- (-1989)
58 GEOSCIENCES
580202 -- Geophysics-- Volcanology-- (1980-1989)
AGE ESTIMATION
ANDESITES
ARIZONA
BASALT
CHEMICAL COMPOSITION
IGNEOUS ROCKS
MAPS
NORTH AMERICA
RHYOLITES
ROCKS
USA
VOLCANIC REGIONS
VOLCANIC ROCKS
WESTERN REGION