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Map showing publication footprint
  • Usage in publication:
    • Juniper Flat alluvium member (informal) [?]
    • Juniper Flat alluvium [member] (informal) [?]
  • Modifications:
    • Named
  • Dominant lithology:
    • Alluvium
  • AAPG geologic province:
    • Sierra Nevada province
Publication:

Birkeland, P.W., 1962, Pleistocene volcanism and deformation of the Truckee area, California, IN U.S. Highway 40, Sacramento to Reno, Dixie Valley and Sand Springs Range, Nevada; guidebook to the annual field trip: Geological Society of Sacramento Annual Field Trip Guidebook, Annual Field Trip, June 9-10, 1962, p. 59-63.


Summary:

zzzzz[Discrepancy: GNC records (US geologic names lexicon, USGS Bull. 1350) indicate author proposed name for an informal member of Lousetown Formation. GNU records (USGS DDS-6; Menlo GNULEX) indicate author's proposal is not clearly stated; Juniper Flat is shown on sketch map as one of three informally named [members] in the Lousetown. --unresolved.]
GNC records (US geologic names lexicon, USGS Bull. 1350): Pg. 61, fig. 2 (map). Juniper Flat alluvium member of Lousetown Formation. Informal term applied to alluvium that was laid down as fan deposit on latite flows by Juniper Creek about the same time as Prosser Creek alluvium (new) was deposited. Age is Pleistocene. Covers much of Juniper Flat, Truckee area, north of Lake Tahoe, northeastern CA.
GNU records (USGS DDS-6; Menlo GNULEX, December 15, 1988): Juniper Flat alluvium [member] of Lousetown Formation. [Named for Juniper Flat, mostly in secs. 28 and 33, T. 18 N., R. 17 E., Truckee 15-min quadrangle, Nevada Co., CA. Type locality not designated]. Shown on sketch map as one of three informally named [members] of Lousetown Formation. Laid down as fan deposit on latite flows by Juniper Creek about the same time as Prosser Creek alluvium [member] (new) (Lousetown Formation) was deposited. Age is Pleistocene. Also referred to as Juniper Flat Alluvium [Member] of Lousetown Formation in Menlo GNULEX.

Source: US geologic names lexicon (USGS Bull. 1350, p. 379); GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Juniper Flat alluvium member (informal)
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Sierra Nevada province
Publication:

Birkeland, P.W., 1963, Pleistocene volcanism and deformation of the Truckee area, north of Lake Tahoe, California: Geological Society of America Bulletin, v. 74, no. 12, p. 1453-1464.


Summary:

Pg. 1453-1464. Juniper Flat alluvium member of Lousetown Formation. Consists of interfingering lenses of silt, sand, and gravel, with some 1-foot boulders. Maximum known thickness about 80 feet. Overlies andesite bedrock and Hirschdale olivine latite (new). Age is early Pleistocene.

Source: US geologic names lexicon (USGS Bull. 1350, p. 379).


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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