U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Wendell Grade basalt*
  • Modifications:
    • Named
  • Dominant lithology:
    • Basalt
  • AAPG geologic province:
    • Snake River basin
Publication:

Stearns, H.T., 1936, Origin of the large springs and their alcoves along the Snake River in southern Idaho: Journal of Geology, v. 44, no. 4, p. 429-450.


Summary:

Named for Wendell Grade, northwest of town of Wendell, Gooding Co, ID, in Snake River basin. Is a black, aphanitic pahoehoe basalt 25 ft+ thick. Is younger than Minidoka basalt and older than an unnamed basalt. Assigned to the Pleistocene.

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


Map showing publication footprint
  • Usage in publication:
    • Wendell Grade basalt*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Snake River basin
Publication:

Stearns, H.T., Crandall, Lynn, and Steward, W.G., 1938, Geology and ground-water resources of the Snake River Plain in southeastern Idaho: U.S. Geological Survey Water-Supply Paper, 774, 268 p.


Summary:

Steep ascent on road from Hagerman to Wendell located in sec 19, T7S, R14E, Gooding Co, ID, Snake River basin, is referred to as Wendell Grade [type locality of unit]. Shown on geologic map to occur just east of Hagerman in Ts7 and 8S, R14E, within Snake River basin. Forms broad, hummocky topography sparsely covered with soil and vegetation. Consists of recent appearing, black, vesicular, olivine, pahoehoe basalt. Flow probably originated from Notch Butte and extends for 25 mi from source. Stratigraphic chart; geologic maps. Younger than Minidoka basalt; underlies younger Pleistocene basalts. Unit is younger than Snake River Valley and is one of youngest basalts along Snake River; assigned Pleistocene age.

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


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

Malde, H.E., 1971, History of the Snake River Canyon indicated by revised stratigraphy of Snake River Group near Hagerman and King Hill, Idaho, with a section on paleomagnetism by Allan Cox, IN Shorter contributions to general geology, 1969: U.S. Geological Survey Professional Paper, 644-F, p. F1-F21. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp644F]


Summary:

F2 (fig. 2), F4. Wendell Grade Basalt of Snake River Group. In exposures along the Union Pacific RR 4 miles southeast of King Hill, 200 feet above Snake River, the McKinney Basalt of Snake River Group lies beneath Melon Gravel, thus the McKinney and Wendell Grade Basalts are older than previously thought and considered late Pleistocene.

Source: Publication; Changes in stratigraphic nomenclature, 1971 (USGS Bull. 1372-A, p. A20-A21).


Search archives

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 ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 04 Apr 2024 04:12:44 PM MDT