Title | North Shore Volcanic Group metasediments exposed along Lake Superior shoreline |
Description | North Shore Volcanic Group metasediments (including cross-bedded sandstone) exposed along Lake Superior shoreline, Leif Ericson Park, Duluth, St. Louis County, Minnesota. Rubble beach consists of basalts and other Late Proterozoic volcanics and sandtones. The primarily basaltic finer-grained sediments produce a black sand beach. |
Chronostratigraphy | Late Proterozoic, Keweenawan |
Lithostratigraphy | North Shore Volcanic Group |
Geologic province | Midcontinent Rift |
Location | USA ▹ Minnesota ▹ St. Louis. Near Duluth. Duluth Quadrangle. |
Photographer | Joseph Hartman. 2002-02-21. |
Collection | Joseph Hartman C08844. |
Key words | North Shore Volcanic Group |
Tech details | 513 KB. Outcrop. Kodachrome, TIFF. |
GeoDIL number | 2412 |
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