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Geologic Unit: Sunflower
Map showing publication footprint
  • Usage in publication:
    • Sunflower Formation
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Bushnell, K.O., 1965, The geology of the Rowland quadrangle, Nevada: Dissertation Abstracts, v. 26, no. 4, p. 2132.


Summary:

Pg. 2132. Sunflower Formation. A fossiliferous formation that unconformably overlies Lower Cambrian(?) quartzite and undatable calcareous and argillaceous formations. Age is Late Pennsylvanian and Early Permian(?). Present in northern Nevada.

Source: US geologic names lexicon (USGS Bull. 1350, p. 736-737).


Map showing publication footprint
  • Usage in publication:
    • Sunflower Formation
  • Modifications:
    • [not stated]
  • AAPG geologic province:
    • Great Basin province
Publication:

Bushnell, K.O., 1967, Geology of the Rowland quadrangle, Elko County, Nevada: Nevada Bureau of Mines and Geology Bulletin, no. 67, 38 p., (incl. geologic map, scale 1:62,500)


Summary:

Pg. 5-8, pl. 1 (geol. map). Sunflower Formation. Age is Permian.

Source: GNC index card files (USGS-Menlo).


Map showing publication footprint
  • Usage in publication:
    • Sunflower Formation
  • Modifications:
    • Principal reference
  • Dominant lithology:
    • Sandstone
    • Conglomerate
    • Limestone
  • AAPG geologic province:
    • Great Basin province
Publication:

Coash, J.O., 1967, Geology of the Mount Velma quadrangle, Elko County, Nevada, with a section on the fauna of the Sunflower Formation by R.D. Hoare: Nevada Bureau of Mines and Geology Bulletin, no. 68, 21 p., (incl. geologic map, scale 1:62,500)


Summary:

Pg. 5 (table 1), 7-12, pI. 1. Sunflower Formation. Formal proposal of name. Divided into three members: lower conglomerate, 100 to 1,910 feet; middle limestone, 296+ to 530 feet; and upper sandstone, 1,460 to 2,000 feet. Overlies Tennessee Mountain Formation (new). Underlies Hammond Canyon Formation (new). Age is Permian.
Named for Sunflower Reservoir which lies at southern extremity of Sunflower Flat, a large open basin in southwestern corner of Rowland quadrangle, Elko Co., northern NV. Well exposed in line of hills extending eastward from Jenkins Peaks, in the southeastern corner of Mountain City quadrangle, along southern border of Rowland quadrangle. Beds dip steeply and are commonly overturned.

Source: US geologic names lexicon (USGS Bull. 1350, p. 736-737).


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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