REPORT:
Gigantic Debris Avalanche of Pleistocene Age from Ancestral Mount Shasta Volcano, California, and Debris-Avalanche Hazard Zonation

Table of Contents

• Abstract
• Introduction
• Topographic and Geologic Setting and Age of the Debris Avalanche
• Previous Interpretations of the Geology and Topography of Shasta Valley
• Description of the Debris-Avalanche Deposits
  • Matrix Facies
  • Block Facies
• Fossils in the Matrix Facies
• Distribution of the Debris-Avalanche Deposits
• Extent, Thickness, and Volume of the Deposits
• Origin of Morphology and Drainage on the Deposits
• Sources of Water in the Debris Avalanche
• Cause of the Debris Avalanche
• Initiation of the Debris Avalanche and Emplacement of Deposits
• Comparison of Wet and Dry Volcanic Debris Avalanches
• Hazard Zonation for Volcanic Debris Avalanches
  • Examples of Debris-Avalanche Hazard Zonation
• Discussion
• Acknowledgments
• References Cited

Return to:
[Report Menu] ...