Norbeck_Intrusive_Suite

Norbeck Intrusive Suite

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 ...

Description

Three lithologies were mapped in the Kensington quadrangle by Drake:[3]

References

  1. [1]
    Hopson, C.A., 1964, The crystalline rocks of Howard and Montgomery Counties: Maryland Geological Survey County Report, 337 p., (Reprinted from Cloos, Ernst, and others, "Geology of Howard and Montgomery Counties," p. 27-215)
  2. [2]
    Geologic Map of Maryland, 1968. Maryland Geological Survey.
  3. [3]
    Drake, A.A., Jr., 1998, Geologic map of the Kensington quadrangle, Montgomery County, Maryland: U.S. Geological Survey Geologic Quadrangle Map, GQ-1774, scale 1:24,000
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