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  • Usage in publication:
    • Chenoweth Formation
  • Modifications:
    • Named
    • Biostratigraphic dating
    • Geochronologic dating
  • AAPG geologic province:
    • Columbia basin
Publication:

Farooqui, S.M., Beaulieu, J.D., Bunker, R.C., Stensland, D.E., and Thoms, R.E., 1981, Dalles Group; Neogene formations overlying the Columbia River Basalt Group in north-central Oregon: Oregon Department of Geology and Mineral Industries, Oregon Geology, v. 43, no. 10, p. 131-140.


Summary:

Chenoweth Formation of the Dalles Group is applied to volcaniclastic debris fan deposits consisting of interbedded agglomerate, tuff breccia, tuff, lahars, and clastics in The Dalles basin. Overlies the Priest Rapids and Frenchman Springs Member of the Wanapum Basalt; underlies Quaternary rocks. Age is late Miocene and early Pliocene(?) based on radiometric (K-Ar) analyses and fossils [vertebrates]. (B1565)

Source: GNU records (USGS DDS-6; Menlo GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

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