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Map showing publication footprint
  • Usage in publication:
    • Carson Pass tonalite
  • Modifications:
    • Named
  • Dominant lithology:
    • Tonalite
  • AAPG geologic province:
    • Sierra Nevada province
Publication:

Parker, R.B., 1961, Petrology and structural geometry of pre-granitic rocks in the Sierra Nevada, Alpine County, California: Geological Society of America Bulletin, v. 72, no. 12, p. 1789-1806.


Summary:

Shown in geologic sketch map of western half of Markleeville 15-min quadrangle, Alpine Co., CA, in area near Carson Pass. [Age not stated.]

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


Map showing publication footprint
  • Usage in publication:
    • Carson Pass Tonalite*
  • Modifications:
    • Age modified
    • Geochronologic dating
  • AAPG geologic province:
    • Sierra Nevada province
Publication:

John, D.A., Armin, R.A., Moore, W.J., and Dohrenwend, J.C., 1981, Geologic map of the Freel and Dardanelles Further Planning Area, Alpine and El Dorado Counties, California: U.S. Geological Survey Miscellaneous Field Studies Map, MF-1322-A, 1 sheet, scale 1:62,500


Summary:

Carson Pass Tonalite of Parker (1961) shown on geologic map of Freel and Dardanelles Further Planning Area, Alpine and El Dorado Cos, CA. Described as dark-bluish-gray, brownish-gray weathering, medium-grained hornblende-biotite granodiorite to quartz diorite. Intrudes Burnside Lake Adamellite of Parker (1961) in southeast area of study. K-Ar age on biotite yielded 88.7 +/-2 Ma (Evernden and Kistler, 1970). Using I.U.G.S. constants calculated age is 90.9 +/-2 Ma. Age on map given as Late Cretaceous.

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


Map showing publication footprint
  • Usage in publication:
    • Carson Pass Tonalite*
  • Modifications:
    • Geochronologic dating
  • AAPG geologic province:
    • Sierra Nevada province
Publication:

Robinson, A.C., and Kistler, R.W., 1986, Maps showing isotopic dating in the Walker Lake 1 degree x 2 degrees quadrangle, California and Nevada: U.S. Geological Survey Miscellaneous Field Studies Map, MF-1382-N, 1 sheet, 49 p., scale 1:125,000


Summary:

K-Ar age on biotite from Carson Pass Tonalite yielded 90.9 +/-2 Ma. Sample collected at 38 deg 41' 41"N, 119 deg 59' 03"W, Alpine Co, CA.

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


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Asterisk (*) indicates published by U.S. Geological Survey authors.

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