Aeromagnetic discovery of a Baltimore Gneiss dome in the Piedmont of northwestern Delaware and southeastern Pennsylvania
Geology
By: Michael W. Higgins, George Wescott Fisher, and Isidore Zietz
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Abstract
In the central Appalachian Piedmont the “basement complex” is an assemblage of 1,100- to 1,300-m.y.-old gneisses, migmatites, and amphibolites that crops out in “domes” mantled by younger meta-sedimentary rocks of the Glenarm Series. Aeromagnetic data and reconnaissance field work indicate that a previously unknown Baltimore Gneiss dome, here called the Mill Creek dome, is present in southeastern Pennsylvania and northwestern Delaware. The discovery of previously unknown domes of Baltimore Gneiss has bearing on the thickness, structure, and regional relations of the Glenarm Series.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Aeromagnetic discovery of a Baltimore Gneiss dome in the Piedmont of northwestern Delaware and southeastern Pennsylvania |
| Series title | Geology |
| DOI | 10.1130/0091-7613(1973)1<41:ADOABG>2.0.CO;2 |
| Volume | 1 |
| Issue | 1 |
| Year Published | 1973 |
| Language | English |
| Publisher | Geological Society of America |
| Description | 3 p. |
| First page | 41 |
| Last page | 43 |
| Country | United States |
| State | Delaware, Pennsylvania |
| Other Geospatial | Appalachian Mountains, Piedmont |
| Google Analytic Metrics | Metrics page |