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Geologic Unit: Holdout
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  • Usage in publication:
    • Holdout Member
  • Modifications:
    • Named
  • AAPG geologic province:
    • Snake River basin
Publication:

Kittleman, L.R., Green, A.R., Hagood, A.R., Johnson, A.M., McMurray, J.M., Russell, R.G., and Weeden, D.A., 1965, Cenozoic stratigraphy of the Owyhee region, southeastern Oregon: University of Oregon, Museum of Natural History Bulletin, no. 1, 45 p.


Summary:

Named as 3rd from lowermost member (of 7) of Deer Butte Formation. Type section designated as exposures at SW/4 SE/4 sec.28 T24S R43E, Malheur Co, OR. [lithology not described in this report]. Overlies Orlano Spring Member; underlies Quartz Mountain Basalt member (both new and of Deer Butte Formation). Age of Deer Butte Formation is Miocene and early Pliocene(?).

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


Map showing publication footprint
  • Usage in publication:
    • Holdout Member
  • Modifications:
    • Geochronologic dating
  • AAPG geologic province:
    • Snake River basin
Publication:

Laursen, J.M., and Hammond, P.E., 1974, Summary of radiometric ages of Oregon and Washington rocks through June, 1972: Isochron/West, no. 9, 32 p.


Summary:

Holdout Member of Deer Butte Formation. Sample from volcanic sandstone, collected on northeast side of Quartz Mountain, in SW/4 sec. 23, T. 24 S., R. 43 E., Mitchell Butte 30-min quadrangle, Malheur County, Oregon. K-Ar age on sanidine 19.7 +/-1.0 Ma.

Source: Modified from 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 ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

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