Bald Crater - Prominent Geological Features of Crater Lake National Park

 

Bald Crater is a cinder cone in the northwest corner of Crater Lake National Park. This cone rises approximately 600 feet above a pedestal of glaciated, olivine-rich basaltic andesite and basalt. The greater part is composed of basaltic scoria, among which may be found occasional ribbon bombs 5 feet in length. Close to the summit there are several flows of basalt, and probably others are concealed by slides of scoria. The cone is thus composite. Mixed with the scoria are angular lithic fragments torn from the basement. The summit crater is represented only by irregular depressions, but the flanks of the cone have scarcely been modified by erosion. [The Parasitic Scoria Cones of Mount Mazama: Bald Crater, The Geology of Crater Lake National Park, Oregon (1942) by Howell Williams]

Bald Crater (upper left corner) as it appeared on an early geological map, The Geology of Crater Lake National Park, Oregon (1942) by Howell Williams

1. Applegate Peak 2. Bald Crater 3. Cloudcap 4. Crater Lake Caldera 5. Crater Peak 6. Desert Cone 7. Devil's Backbone 8. Dutton Cliff 9. Eagle Crags 10. Garfield Peak 11. Godfrey Glen 12. Grouse Hill 13. Hillman Peak 14. Kerr Notch 15. Llao Rock 16. Llao's Hallway 17. Maklaks Crater 18. Mazama Rock 19. Mount Scott 20. Palisades 21. Phantom Ship 22. The Pinnacles 23. Pumice Castle 24. Pumice Desert 25. Pumice Point 26.  Red Cone 27. Redcloud Cliff 28. Rugged Crest Scoria Cone Scott Bluff Sentinel Rock 29. Skell Head 30. Sun Notch 31. Timber Crater 32. Union Peak 33. Watchman 34. Williams Crater 35. Wineglass 36. Wizard Island Note: the numbers associated with each feature name above correspond to their place on the Custom Google Map below

  Related Materials