Norbeck Intrusive Suite
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The Norbeck Intrusive Suite is an Ordovician granitic pluton in Montgomery County, Maryland. The intrusive suite was originally mapped as the Norbeck Quartz Diorite by Hopson,[1] and is shown as such on the Geologic Map of Maryland of 1968.[2] A. A. Drake later revised the name after more detailed mapping.[3] It intrudes through the Wissahickon Formation.
Quick Facts Type, Lithology ...
Norbeck Intrusive Suite | |
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Stratigraphic range: Ordovician | |
Type | igneous |
Lithology | |
Primary | tonalite, metadiorite, metagabbro |
Location | |
Region | Piedmont of Maryland |
Extent | Montgomery County |
Type section | |
Named for | Norbeck, Maryland |
Named by | C. A. Hopson, 1964[1] |
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