The Chopawamsic Formation--: A New Stratigraphic Unit in the Piedmont of Northeastern Virginia, Issues 1320-1325
Charles Alfred Anderson · David Leroy Southwick · Donald Albert Brobst · Edward Malcolm MacKevett · George Vincent Cohee · Jacquelyn H. Freeberg · Mortimer Hay Staatz · Norman L. Hatch · Paul Averitt · Richard Quintin Lewis · Val L. Freeman · John Calvin Reed (Jr.) · P.M. Blacet · Paul Lester Weis · Robert Glenn Bates · Rolfe S. Stanley · Robert B. Mixon · Rowland W. Tabor · Stewart F. Clark · T. W. Stern · Wilna B. Wright · Jacques Francis Robertson · Ronald M. Van Noy · Eldon C. Pattee · Dean C. Holt · Gordon P. Eaton
Jan 1970 · U.S. Government Printing Office
Ebook
39
Pages
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About this ebook
A thin discontinuous unit of calc-silicate granulite and quartzite has been mapped on the east limb of the Berkshire anticlinorium in southern Massachusetts and is here named the Russell Mountain Formation. It overlies rocks continuous with the Hawley Formation of MIddle Ordovician age and underlies the Goshen Formation of Middle Silurian to Early Devonian age. Largely on the basis of a correlation with the Shaw Mountain Formation of Vermont, the Russell Mountain Formation is assigned a Middle Silurian age.
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