University of Washington Publications in Geology The Geology of Mount Rainier National Park

Cover

Introduction

Location
Routes of Approach
Field Work
Acknowledgments
History
Review of Literature
Topography
Drainage
Climate
Fauna and Flora

Geology

Distribution and Relative Ages of the Rocks
The Puget Group
Keechelus Andesitic Series
     Mineral Mountain Andesite Porphyry
     Sheepskull Gap Tuffs
     Sourdough Mountain Breccias
     Chinook Pass Diorite Porphyry
     Longmire Acid Breccias
     Starbo Altered Tuffs
     Cayuse Pass Acid Hornfels
     Mowich Hypersthene Basalt
     Summary
     Relations and Age
Snoqualmie Granodiorite
     Areal Extent
     Petrography
     Relations and Age
The Mount Rainier Volcanics
     Composition
     Microscopical Petrography
          Plagioclase
          Hypersthene
          Monoclinic Hypersthene
          Augite
          Olivine
          Hornblende
          Holohyaline Groundmass
          Hypo- and Holocrystalline Groundmass
          Miscellaneous Features and Groundmass

Physiography and Geomorphology

Introduction
The Cascades
     Previous Literature
     Pre-Rainier Topography
     Pre-Rainier River Pattern
     Pre-Rainier Structure
     Conclusions
     Summary
The Cone of Mount Rainier
     The Summit Area
     Glacial Erosion
          Cleavers
          Wedges
          Interglaciers
          Asymmetrical Topography as a Result of Selective Glaciation

Bibliography

Appendix A. Geologic Map of Mount Rainier National Park (omitted from the online edition)

FIG 1. Mount Rainier from the West Side of Pinnacle Peak

FIG 2. Index Map Showing the Location of Mount Rainier National Park

FIG 3. Mother Mountain from Seattle Park, Looking Northward

FIG 4. Mineral Mountain Andesite Porphyry
A. x25, plane light
B. Same view under crossed nicols

FIG 5. Sheepskull Gap Tufts, x25, Plane Light

FIG 6. Sourdough Mountain Breccias, x25, Plane Light
A. Section view
B. Section view

FIG 7. Chinook Pass Diorite Porphyry
A. x25, plane light
B. Under crossed nicols

FIG 8. Longmire Acid Breccias, x25, Plane Light

FIG 9. Starbo Altered Tuft, x25, Plane Light

FIG 10. Cayuse Pass Acid Hornfels
A. x25, plane light
B. Under crossed nicols

FIG 11. Mowich Hypersthene Basalt
A. x25, plane light
B. Under crossed nicols

FIG 12. Snoqualmie Granodiorite
A. x25, plane light
B. Under crossed nicols

FIG 13. Unconformity between the Eroded Surface of the Snoqualmie Granodiorite and the Lower Flows of Mount Rainier

FIG 14. Andesite from North Side of the South Puyallup Glacier
A. x25, plane light
B. Under crossed nicols

FIG 15. Hypersthene Andesite from St. Elmos Pass
A. x62, plane light
B. Under crossed nicols

FIG 16. Andesite from near the Snout of Nisqually Glacier
A. x25, plane light
B. Under crossed nicols

FIG 17. Hypersthene Andesite from Spray Park

FIG 18. Hypersthene Andesite from Faraway Rock

FIG 19. Andesite from McClure Rock

FIG 20. Andesite from Register Rock at the Summit of the Mountain

FIG 21. Hornblende Andesite from St. Elmos Pass

FIG 22. Hornblende Andesite from Edith Creek, Paradise Valley

FIG 23. Andesite from Panorama Point

FIG 24. Andesite from Gibraltar

FIG 25. Lake Leigh from near Panhandle Gap

FIG 26. A View Looking South from the Crater Rim at the Top of the Mountain

FIG 27. Steamboat Prow and The Wedge

FIG 28. Yakima Park from the Sourdough Mountains