Filters: Tags: igneous rocks (X)
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CI15. View east toward Quaternary basaltic dike of Hundred and Fiftynine Mile Dike in Muav Limestone
View east toward Quaternary basaltic dike of Hundred and Fiftynine Mile Dike in Muav Limestone on north side of river mile 159.7.
View south toward Pleistocene Vulcans Throne cinder cone, south end of Toroweap Valley.
Photograph showing mining claim dated August 31, 1935, found on Garrett Dikes, south end of Fort Garrett Point (photograph WI139).
Aerial view west toward rim gravel over Kaibab Formation beneath Price Point basalt flows (photograph WI16).
View north and upriver toward remnant of basalt flow from Toroweap area on west side of river mile 225.6.
View of last visible remnant of basalt flow that came from the Toroweap area along the east bank of river mile 254.8.
This geologic database is a digitized version of the original 1:24,000-scale analog geologic map titled "Geologic map of the Vidal, California, and Parker SW, California-Arizona quadrangles", published by the U.S. Geological Survey (USGS) in 1980. The map area straddles the Arizona-California border, and is located approximately 9.0 km (5.6 mi) west-southwest of Parker, CA, immediately south of the unincorporated communities of Vidal and Vidal Junction, CA. The map area includes the northern Riverside Mountains, which contain a prominent suite of Permian, Mesozoic, and potentially Precambrian metamorphic and metasedimentary rocks. These rocks predominantly consist of gneisses, schists, limestones, and dolomites,...
This U.S. Geological Survey (USGS) data release includes whole rock geochemical and isotopic data, and uranium-lead isotopic data collected by both Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) and Sensitive High Resolution Ion Microprobe-Reverse Geometry (SHRIMP-RG) methods for rocks in Colorado, Wyoming, Utah, and New Mexico.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Colorado,
Geochemistry,
National Cooperative Mapping Program,
New Mexico,
USGS Science Data Catalog (SDC),
The Alaska Division of Geological & Geophysical Surveys, in collaboration with the University of Alaska Fairbanks, collected mafic rocks in the Ivishak River area of the northeastern Brooks Range during summer 2009 for geochemical sampling. The sampled rocks, including lava flows, sills, and limy volcaniclastic strata, crop out within the carbonate-platform succession of the Carboniferous Lisburne Group. Refer to Herriott and others (2011) for additional information regarding the geologic and geographic context of these samples, preliminary implications of the geochemical data presented here, and a summary of known mafic rock occurrences in the Arctic Alaska terrane. The analytical data tables associated with this...
This report presents 40Ar/39Ar step-heating geochronology results for igneous and metamorphic rocks from the Alaska Division of Geological & Geophysical Surveys' (DGGS) Wrangellia Mineral Assessment project, part of a multi-year effort focusing on improving the publicly available geoscientific information for the western Wrangellia terrane. The samples described in this report were selected and analyzed to improve our understanding of the geology and structural history of the Wrangellia Mineral Assessment project area. A metagabbro rock sample returned a Late Triassic crystallization age consistent with regional ages for Nikolai Greenstone-related magmatism; however, the two amphibole separates ages do not overlap,...
View north toward south end of Tuckup Canyon basalt flow that flowed over Esplanade Sandstone, middle part of Tuckup Canyon.
View east into western part of Tuckup Canyon at Tuckup cinder cone and associated dike at Toroweap Formation level, just below rim of Kaibab Formation.
Aerial view east toward west side of Separation hill, west side of south Separation Canyon, Hualapai plateau. 19-million-year (Ma) basalt flow over Tertiary Buck and Doe Conglomerate.
Aerial view north toward Parashant dikes in Esplanade Sandstone. K-Ar age is 6.34±0.16 million years (Ma) (Billingsley and Wellmeyer, 2003).
View west toward dry waterfall of Prospect Canyon drainage over Pleistocene lake sediments and basalt flows of lower Prospect Canyon. One mile south of river mile 180.0.
Aerial view south toward Quaternary pyroclastic dike of Hundred and Fiftynine Mile Vent in Manakacha Formation, south of and above river mile 159.7.
View northwest toward Prospect Canyon volcano (photograph CI42) on west side of lower Prospect Canyon from Toroweap Fault on east rim of lower Prospect Canyon, about a half mile south of river mile 180.0.
View northwest toward Mount Emma volcano and various Pleistocene basalt flows that flowed into Toroweap Valley, west side of Toroweap Valley from the National Park Service Toroweap Ranger Station. Strata include Kaibab Formation (upper cliff) and Toroweap Formation (upper slope, and lower cliff); valley floor is Pleistocene and recent sediment and gravel.
Mysterious cross on basalt at Witch Pool, west side of upper Toroweap Valley.
View of Pleistocene columnar basalt (photograph CI72), along Whitmore trail, west of and above river mile 188.0.
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