p40sAr/p39sAr age-spectrum data for amphibole, muscovite, biotite, and K-feldspar samples from metamorphic rocks in the Blue Ridge anticlinorium, northern Virginia
By: by Michael J. Kunk and William C. Burton.
Contributors: Burton, William C. 1952-; Geological Survey (U.S.)
Series: Open-file report -- 99-552; U.S. Geological Survey open-file report -- 99-552.
Publisher: U.S. Geological Survey; [Branch of Information Services, distributor]
Published: 1999
Place of publication: [Denver, CO]
Language: eng
Format: Microform
Number of pages: 110
Subjects: Potassium-argon dating.; Rocks, Metamorphic -- Virginia.
Other titles: Forty Ar, thirty nine Ar age spectrum data for amphibole, muscovite, biotite, and K-feldspar samples from metamorphic rocks in the Blue Ridge anticlinorium, northern Virginia
Notes: Cover title.

Shipping list no.: 2002-0124-M.

Includes bibliographical references (p. 110).

Microfiche. [Denver, Colo. : U.S. Geological Survey, 2002] 2 microfiches : negative.