James Evans, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 68
Mineral resources of the Sheep Mountain Wilderness study area and the Cucamonga Wilderness and additions, Los Angeles and San Bernardino counties, California Mineral resources of the Sheep Mountain Wilderness study area and the Cucamonga Wilderness and additions, Los Angeles and San Bernardino counties, California
A mineral survey of the Sheep Mountain Wilderness study area and Cucamonga Wilderness area and additions by the U.S. Geological Survey and Bureau of Mines in 1975 covered about 66,500 acres (26,500 ha) of the San Bernardino and Angeles National Forests in southern California. The two study areas are separated by San Antonio Canyon. The mineral resource potential was evaluated through...
Authors
James G. Evans, Leroy Pankraatz, James Ridenour, Steven W. Schmauch, Nicholas T. Zilka
Bootstrap window, Elko and Eureka Counties, Nevada Bootstrap window, Elko and Eureka Counties, Nevada
The Bootstrap window in the Roberts Mountains thrust of north-central Nevada contains a 1,500-ft (460-m)- thick autochthonous section of carbonate assemblage rocks. These carbonate rocks include the upper part of the Roberts Mountains Formation and an unnamed limestone of Devonian age. They contain abundant material that must have been deposited in or near a reef. Allochthonous chert and...
Authors
James G. Evans, Thomas E. Mullens
Geological and geochemical reconnaissance in the central Santander Massif, Departments of Santander and Norte de Santander, Colombia Geological and geochemical reconnaissance in the central Santander Massif, Departments of Santander and Norte de Santander, Colombia
The central Santander Massif is composed of Precambrian Bucaramanga Gneiss and pre-Devonian Silgara Formation intruded by Mesozoic quartz diorite, quartz monzonite, and alaskite and Cretaceous or younger porphyry. Triassic (Bocas Formation), Jurassic (Jordan and Giron Formations).and Cretaceous (Tambor, Rosa Blanca, Paja, Tablazo, Simiti, La Luna, and Umir Formations) sedimentary rocks...
Authors
James George Evans
Bootstrap Window, Elko and Eureka Counties, Nevada; geological summary and analyses of rock samples Bootstrap Window, Elko and Eureka Counties, Nevada; geological summary and analyses of rock samples
No abstract available.
Authors
James George Evans
Geologic map of the Welches Canyon quadrangle, Eureka County, Nevada Geologic map of the Welches Canyon quadrangle, Eureka County, Nevada
No abstract available.
Authors
James George Evans
Geologic map of the Rodeo Creek NE quadrangle, Eureka County, Nevada Geologic map of the Rodeo Creek NE quadrangle, Eureka County, Nevada
No abstract available.
Authors
James George Evans
About nutria and their control About nutria and their control
Wild animals are generally classed as beneficial or pest species, depending on the variable interests of man. Those that provide him with earnings, recreation, or enjoyment are considered beneficial; those that compete with him for food, or ruin his possessions or environment, are quickly dubbed pests. But all men do not have the same interests or the same environment, so many animals...
Authors
James Evans
Geochemical anomalies in the Swales Mountain area, Elko County, Nevada Geochemical anomalies in the Swales Mountain area, Elko County, Nevada
No abstract available.
Authors
Keith Brindley Ketner, James George Evans, Thomas D. Hessin
Science and Products
Filter Total Items: 68
Mineral resources of the Sheep Mountain Wilderness study area and the Cucamonga Wilderness and additions, Los Angeles and San Bernardino counties, California Mineral resources of the Sheep Mountain Wilderness study area and the Cucamonga Wilderness and additions, Los Angeles and San Bernardino counties, California
A mineral survey of the Sheep Mountain Wilderness study area and Cucamonga Wilderness area and additions by the U.S. Geological Survey and Bureau of Mines in 1975 covered about 66,500 acres (26,500 ha) of the San Bernardino and Angeles National Forests in southern California. The two study areas are separated by San Antonio Canyon. The mineral resource potential was evaluated through...
Authors
James G. Evans, Leroy Pankraatz, James Ridenour, Steven W. Schmauch, Nicholas T. Zilka
Bootstrap window, Elko and Eureka Counties, Nevada Bootstrap window, Elko and Eureka Counties, Nevada
The Bootstrap window in the Roberts Mountains thrust of north-central Nevada contains a 1,500-ft (460-m)- thick autochthonous section of carbonate assemblage rocks. These carbonate rocks include the upper part of the Roberts Mountains Formation and an unnamed limestone of Devonian age. They contain abundant material that must have been deposited in or near a reef. Allochthonous chert and...
Authors
James G. Evans, Thomas E. Mullens
Geological and geochemical reconnaissance in the central Santander Massif, Departments of Santander and Norte de Santander, Colombia Geological and geochemical reconnaissance in the central Santander Massif, Departments of Santander and Norte de Santander, Colombia
The central Santander Massif is composed of Precambrian Bucaramanga Gneiss and pre-Devonian Silgara Formation intruded by Mesozoic quartz diorite, quartz monzonite, and alaskite and Cretaceous or younger porphyry. Triassic (Bocas Formation), Jurassic (Jordan and Giron Formations).and Cretaceous (Tambor, Rosa Blanca, Paja, Tablazo, Simiti, La Luna, and Umir Formations) sedimentary rocks...
Authors
James George Evans
Bootstrap Window, Elko and Eureka Counties, Nevada; geological summary and analyses of rock samples Bootstrap Window, Elko and Eureka Counties, Nevada; geological summary and analyses of rock samples
No abstract available.
Authors
James George Evans
Geologic map of the Welches Canyon quadrangle, Eureka County, Nevada Geologic map of the Welches Canyon quadrangle, Eureka County, Nevada
No abstract available.
Authors
James George Evans
Geologic map of the Rodeo Creek NE quadrangle, Eureka County, Nevada Geologic map of the Rodeo Creek NE quadrangle, Eureka County, Nevada
No abstract available.
Authors
James George Evans
About nutria and their control About nutria and their control
Wild animals are generally classed as beneficial or pest species, depending on the variable interests of man. Those that provide him with earnings, recreation, or enjoyment are considered beneficial; those that compete with him for food, or ruin his possessions or environment, are quickly dubbed pests. But all men do not have the same interests or the same environment, so many animals...
Authors
James Evans
Geochemical anomalies in the Swales Mountain area, Elko County, Nevada Geochemical anomalies in the Swales Mountain area, Elko County, Nevada
No abstract available.
Authors
Keith Brindley Ketner, James George Evans, Thomas D. Hessin