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Geologic Unit: Phipps Pass
Map showing publication footprint
  • Usage in publication:
    • Phipps Pass granodiorite
  • Modifications:
    • Named
  • Dominant lithology:
    • Granodiorite
  • AAPG geologic province:
    • Sierra Nevada province
Publication:

Loomis, A.A., 1981, Geology of the Fallen Leaf Lake 15-minute quadrangle, El Dorado County, California: California Division of Mines and Geology Map Sheet, 32, 2 sheets, 24 p., scale 1:62,500


Summary:

Phipps Pass granodiorite is shown on map of Fallen Leaf Lake 15' quad, El Dorado Co, CA. Is exposed over 6 sq mi in north-central part of quad. Consists of medium-grained to coarse-grained, equigranular hornblende-biotite granodiorite. Intruded by alaskite at Rubicon Point. Age given as Cretaceous.

Source: 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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