Shorter contributions to the stratigraphy and geochronology of Upper Cretaceous rocks in the western interior of the United States.
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. G.P.O. ;
1995.
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| Series: | U.S. Geological Survey bulletin ;
2113. |
| Subjects: |
Table of Contents:
- ch. A. Conglomerate facies and contact relationships of the Upper Cretaceous upper part of the Frontier Formation and lower part of the Beaverhead Group, Lima Peaks area, southwestern Montana and Southeastern Idaho / by T.S. Dyman, J.C. Haley, and W.J. Perry, Jr.
- ch. B. U-Pb ages of volcanogenic zircon from porcellanite beds in the Vaughn member of the mid-Cretaceous Blackleaf Formation, southwestern Montana / by R.E. Zartman ... [et al.]
- ch. C. Occurrences of the free-swimming Upper Cretaceous crinoids Uintacrinus and Marsupites in the western interior of the United States / by William A. Cobban.