Presentation for a AEG-Great Basin Section delivered May 2003

6. Generalized map of the Mammoth Lakes region.

7. Long Valley Caldera from summit of White Mountain Peak.

8. Mammoth Mountain from Deer Mountain.

9. Inyo-Mono Craters Volcanic Chain from the summit of Mammoth Mountain.

10. Geologic Overview Simplified geologic map of the Mammoth Lakes region. Source: U.S. Geological Survey

11. Lake Crowley and south moat of Long Valley caldera.

14. Inyo Craters from the summit of Deer Mountain.

17. Mono-Inyo Craters Volcanic Chain from the summit of Deer Mountain.

19. Cinder Cone and Butte Lake, Lassen Volcanic National Park.

20. Mono-Inyo Craters Volcanic Chain from the summit of Mammoth Mountain. POTENTIALLY HAZARDOUS VOLCANIC EVENTS

21. A model showing the dike that triggered the eruptive events from the Mono-Inyo Craters chain 650–550 years ago. Illustration from J.H. Fink and modified by J. Johnson Photograph by S.R. Brantley on August 2, 1998.

25. Source: map from C. D. Miller, modified by J. Johnson (U.S. Geological Survey).

26. Ash and pumice layer from the May 18, 1980 eruption of Mt. St. Helens. Layer is about 15 cm thick.

28. Source: map from C. D. Miller, modified by J. Johnson (U.S. Geological Survey).

30. Smith Creek lahar from the May 18, 1980 eruption of Mt. St. Helens.

34. Butte Lake and Fantastic Lava Beds from Cinder Cone, Lassen Volcanic National Park.

38. Coldwater Lake debris dam, Mt. St. Helens National Volcanic Monument.

39. DISCUSSION Lake Crowley from the summit of Glass Mountain

42. The End