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Map showing publication footprint
  • Usage in publication:
    • Indian Creek Amphibolite
  • Modifications:
    • Named
  • Dominant lithology:
    • Amphibolite
  • AAPG geologic province:
    • Cascades province
Publication:

Ellingson, J.A., 1972, The rocks and structure of the White Pass area, Washington: Northwest Science, v. 46, no. 1, p. 9-24.


Summary:

Crops out north of outlet of Clear Lake forming Kamiakan Butte and crops out along east side of Indian Creek at west end of Russell Ridge, Yakima Co, WA. 80% of lens-shaped body is amphibolite; is bounded on east and west by fault zones. Shown on geologic sketch map of White Pass region. Intruded by quartz diorite pegmatite dikes up to 4 inches wide on Kamiakan Butte and along Clear Lake fault zone. Has been metamorphosed twice. Age given as pre-Tertiary (although "mapped up to this time as a Tertiary intrusion" p.9).

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


Map showing publication footprint
  • Usage in publication:
    • Indian Creek Amphibolite
  • Modifications:
    • Geochronologic dating
  • AAPG geologic province:
    • Cascades province
Publication:

Hammond, P.E., Bentley, R.D., Brown, J.C., and Ellingson, J.A., 1977, Volcanic stratigraphy and structure of the southern Cascade Range, Washington; Field trip no. 4, IN Brown, E.H., and Ellis, R.C., eds., Geological excursions in the Pacific northwest: Geological Society of America [Guidebook for Field Trips], [90th] annual meeting, Seattle, WA, November 7-9, 1977, p. 127-169.


Summary:

Described as tectonic lens of interlayered amphibolitic, dioritic, and tonalitic gneiss, hornblendite, and lesser amount of quartz diorite pegmatite, cataclastic orthogneiss and mylonite. Emplaced as solid mass within Russell Ranch Formation. Age of amphibolite-grade metamorphism is about 155 Ma (Mattinson, 1972).

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


Map showing publication footprint
  • Usage in publication:
    • Indian Creek Gneiss
  • Modifications:
    • Redescribed
  • AAPG geologic province:
    • Cascades province
Publication:

Vance, J.A., Dungan, M.A., Blanchard, D.P., and Rhodes, J.M., 1980, Tectonic setting and trace element geochemistry of Mesozoic ophiolitic rocks in western Washington, IN Irving, A.J., and Dungan, M.A., eds., The Jackson volume: American Journal of Science, v. 280-A, pt. 1, p. 359-388.


Summary:

Rocks of Russell Ranch Formation are in fault contact with amphibolitic metagabbros, metadiabases, and gneissose quartz diorites of Indian Creek Gneiss [referring to pre-Cenozoic unit of Ellingson, 1972]. Metamorphic age given as about 155 Ma or Late Jurassic (Mattinson, 1972).

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


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