A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Black beach and cross-bedded and jointed sandstone (quartzite) of the North Shore Volcanic Group |
|---|---|
| Description | Jointed and cross-bedded sandstone (quartzite) of the North Shore Volcanic Group 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 Proterzoic, 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 C08847. |
| Key words | joints, black sand beach |
| Tech details | 560 KB. Outcrop. Kodachrome, TIFF. |
| GeoDIL number | 2413 |
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