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Map showing publication footprint
  • Usage in publication:
    • Tims Peak Basalt
  • Modifications:
    • Named
  • Dominant lithology:
    • Basalt
  • 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 for ophitic clinopyroxene basalt exposed at type locality near Tims Peak, SE/4 sec.34 T21S R40E, Malheur Co, OR. Forms prominent plateau in northern part of Monument Peak district; also occurs in Malheur Gorge district. Thickness is 10 to 250 ft as one or several flow units. Overlies Butte Creek Volcanic Sandstone (new); underlies Wildcat Creek Welded Ash-Flow Tuff (new) or Junction Formation. Correlation chart shows age to be Pliocene (Clarendonian).

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


Map showing publication footprint
  • Usage in publication:
    • Tims Peak Basalt*
  • Modifications:
    • Adopted
    • Age modified
  • AAPG geologic province:
    • Snake River basin
Publication:

Greene, R.C., Walker, G.W., and Corcoran, R.E., 1972, Geologic map of the Burns quadrangle, Oregon: U.S. Geological Survey Miscellaneous Investigations Series Map, I-680, 1 sheet, scale 1:250,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_9455.htm]


Summary:

Mapped in northeast corner of Burns 1x2 deg quad, OR. Is medium- to dark-gray, fine-grained and diktytaxitic basalt. Maximum thickness is 400 ft. Overlies Hunter Creek Basalt. Age is Miocene and Pliocene.

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


Map showing publication footprint
  • Usage in publication:
    • Tims Peak Basalt*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Snake River basin
Publication:

Evans, J.G., 1990, Geology and mineral resources map of the South Mountain quadrangle, Malheur County, Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series, GMS-67, 2 sheets, scale 1:24,000


Summary:

(advance copy). Unit is extended into report area (South Mountain 7.5-min quadrangle, Malheur Co., OR). Age is middle Miocene.

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


Map showing publication footprint
  • Usage in publication:
    • Tims Peak Basalt*
  • Modifications:
    • Areal extent
    • Age modified
    • Geochronologic dating
  • AAPG geologic province:
    • Snake River basin
Publication:

Evans, J.G., 1990, Geology and mineral resources map of the Jonesboro quadrangle, Malheur County, Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series, GMS-66, 1 sheet, scale 1:24,000


Summary:

(advance copy). Unit is geographically extended into report area (Jonesboro 7.5-min quadrangle, Malheur County, Oregon). Age is (middle) Miocene based on radiometric age data (12.4 Ma) and regional stratigraphic relations.

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


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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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