This topographic field map depicts point of survey and locations where samples were collected, by geologist, Mark Severson, near Turpela Lake in St. Louis County, Minnesota. Coordinates where Severson survyed along the St. Louis Rapids are also provided along with geological descriptions.
Creator:
United States Geological Survey
Contributor:
Severson, Mark
Created:
1981
Contributed By:
University of Minnesota Libraries, University Archives.
This topographic field map depicts point of survey and locations where samples were collected, by geologist, Mark Severson, along the Cloquet River, within the Thompson Lake Quadrangle. Ultramafic rock and a potential esker is indicated.
Creator:
United States Geological Survey
Contributor:
Severson, Mark
Created:
1954; 1969
Contributed By:
University of Minnesota Libraries, University Archives.
This topographic field map depicts point of survey and locations where samples were collected, by geologist, Mark Severson, along the Cloquet River in the Pequaywan Lake Quadrangle. Points of elevation and descriptions of troctolitic rock, gabbro and magnetic basalt are also noted.
Creator:
United States Geological Survey
Contributor:
Severson, Mark
Created:
1956; 1976
Contributed By:
University of Minnesota Libraries, University Archives.
This topographic field map depicts point of survey and locations where samples were collected, by geologist, Mark Severson, within Harris Lake Quadrangle. Troctolitic , anorthosite and gabbro rock are also described, along with additional geological highlighted along his route.
Creator:
United States Geological Survey
Contributor:
Severson, Mark
Created:
1981; 1985
Contributed By:
University of Minnesota Libraries, University Archives.
This topographic field map depicts point of survey and locations where samples were collected, by geologist, Mark Severson, near Fredenberg, Minnesota and Fish Lake Reservoir. Points of elevation are also highlighted.
Creator:
United States Geological Survey
Contributor:
Severson, Mark
Created:
1953; 1969
Contributed By:
University of Minnesota Libraries, University Archives.
This topographic field map depicts point of survey and locations where samples were collected, by geologist, Mark Severson, in Boulder Lake Quadrangle and around Boulder Lake Reservoir. Questionable rock formations and geological structures are noted.
Creator:
United States Geological Survey
Contributor:
Severson, Mark
Created:
1953; 1969
Contributed By:
University of Minnesota Libraries, University Archives.
This topographic field map depicts point of survey and locations where samples were collected, by geologist, Mark Severson, along the Cloquet River and Boulder Creek in the Boulder Lake Northeast Quadrangle. Rock formations and eskers are indicated, as well.
Creator:
United States Geological Survey
Contributor:
Severson, Mark
Created:
1957; 1976
Contributed By:
University of Minnesota Libraries, University Archives.
This topographic field map depicts point of survey and locations where samples were collected, by geologist, Mark Severson, near Bird Lake in St. Louis County, Minnesota. Noritic rocks with vesicles are also identified.
Creator:
United States Geological Survey
Contributor:
Severson, Mark
Created:
1981; 1983-1984
Contributed By:
University of Minnesota Libraries, University Archives.
This topographic field map depicts point of survey and locations where samples were collected, by geologist, Mark Severson, near Lieuna Lake in the Barrs Lake Quadrangle. Points of elevation are also highlighted.
Creator:
United States Geological Survey
Contributor:
Severson, Mark
Created:
1954; 1976
Contributed By:
University of Minnesota Libraries, University Archives.