The Martinsburg formation (Middle and Upper Ordovician) in the Delaware Valley, Pennsylvania-New Jersey
By: by Avery Ala Drake and Jack B. Epstein
Series: Geological Survey (U.S.). Bulletin -- 1244-H; Contributions to stratigraphy
Publisher: U.S. Govt. Print. Off.
Published: 1967
Place of publication: Washington
Language: eng
Number of pages: 16
Subjects: Stratigraphic Geology; Geology
Description: "A clarification of the stratigraphy of clastic rocks of Middle and Late Ordovician age in western New Jersey and eastern Pennsylvania"--Cover.
Notes: Contributions to stratigraphy.

Prepared in cooperation with the Pennsylvania Geological Survey.

Includes bibliographical references (p. 15-16).