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Geological Survey Professional Paper 3
The Geology and Petrography of Crater Lake National Park |
THE GEOLOGY OF CRATER LAKE NATIONAL PARK
By JOSEPH SILAS DILLER.
CONTENTS OF PART I.
Limits
Foundation
Eocene history
Miocene history
General features
Lavas
Andesites
Watchman area
Castle Creek area
Munson Point area
Union Peak area
Eagle Crags area
Dutton Cliff area
Sentinel Rock area
Round Top area
Steel Bay area
Wizard Island
Andesitic dikes
Basalt
Timber Crater flow
Desert Cone and Red Cone flows
Bald Crater flow
Crater Peak flow
Other flows
Dacites
Sun Creek flow
Cloud Cap flow
Grouse Hill flow
Llao Rock flow
Wineglass flow
Cleetwood Cove flow
Dacitic dikes
Dacitic pumice
Glaciation
Original condition
Development
Destruction of Mount Mazama and formation of the caldera
Temperature
Changes of water level
Evaporation
Inflow
Outlet
ILLUSTRATIONS OF PART I.
| PLATE I. | Map of Crater Lake National Park |
| II. | Cones on summit platform of Cascade Range |
| III. | A, Union Peak; B, Rim of Crater Lake across canyon of Anna Creek |
| IV. | Panoramic view of Crater Lake |
| V. | Western border of Crater Lake, Victor Rock to Llao Rock |
| VI. | Geological map of Mount Mazama and Crater Lake National Park |
| VII. | A, Inner slope of Glacier Peak; B, East Palisade |
| VIII. | A, Devils Backbone; B, Wizard Island |
| IX. | A, Llao Rock; B, Flow of tuffaceous dacite east of Pumice Point |
| X. | A, Valley of caved-in tunnel; B, Cleetwood Cove flow |
| XI. | Jointed tuff of Anna Creek |
| XII. | A, Mount Mazama restored; B, Rim of Crater Lake |
| XIII. | A, Water gage, Crater Lake; B, Raft and evaporating pan |
| FIG. 1. | Map showing routes to Crater Lake |
| 2. | Thermometer and attachments used at Crater Lake |
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Last Updated: 01-Mar-2006