Rheologic properties and kinematics of emplacement of the Chaos Jumbles rockfall avalanche, Lassen Volcanic National Park, California
Eppler DB, Fink J, Fletcher R. 1987. Rheologic properties and kinematics of emplacement of the Chaos Jumbles rockfall avalanche, Lassen Volcanic National Park, California. Journal of Geophysical Research. B, Solid Earth and Planets. 92(5):3623-3633
The Chaos Jumbles is a rockfall avalanche deposit that was emplaced by three separate events. Deposits from each event are distinguishable on the basis of morphology, size variation of large dacitic surface clasts, and by the color of both the matrix and entrained dacitic blocks. Data suggest that each rockfall avalanche can be modeled as a pseudoplastic material undergoing flow parallel compression above a frictionless base. This model allows calculation of deposit volumes ranging from differs from 1.2 to 1.7 X 10(8) m(3) and also suggests that a future rockfall avalanche from the same location would have a more restricted runout than the previous events. (modified journal abstract)
- Type
- Journal Article
- Authors
- Eppler, Dean; Fink, Jonathan; Fletcher, Raymond
- Units
- LAVO
- Keywords
- Chaos Jumbles, Intrusion, Modeling, Physical Sciences, Rheology