Slide 1Chapter 4: Igneous Structures and Field Relationships Figure 4.1a. Calculated viscosities of anhydrous silicate liquids at one atmosphere pressure, calculated by the…

Slide 1 Magmatism and Tectonics Slide 2 Basaltic Lava Fountain and Flows – (Hawaii) Slide 3 Andesitic Explosive Eruption – (Mt. St. Helens) Slide 4 Magma Types Based…

Slide 1 Geologic Overview of the Clackamas Basin Peter Wampler OSU Slide 2 Slide 3 Slide 4 Cascade Mountains Slide 5 Slide 6 High Cascades Young volcanic chain Composite…

Slide 1 Slide 2 Basalt: pl, augite, hypersthene, olivine, spinel (45-52 SiO 2 ) Ultramafic volcanics : komatiite : olivine, high Mg, low Ti kimberlite : olivine, phlogopite,…

Slide 1 Volcanic Hazards 50-60 volcanoes erupt each year! F 2-3 in USA Usually in unpopulated areas, but not always: F Japan F Philippines F Indonesia F Italy F NW USA Slide…

Slide 1 1 Earth Science, 10e Edward J. Tarbuck & Frederick K. Lutgens Slide 2 2 Volcanoes and Other Igneous Activity Chapter 8 Earth Science, 10e Stan Hatfield and Ken…

Chapter 15: Continental Flood Basalts Large Igneous Provinces (LIPs) Oceanic plateaus Some rifts Continental flood basalts (CFBs) Figure 15-1. Columbia River Basalts at Hat…

Columbia River Basalt Flows Icing the Cake Volcanic Episodes 65 55 45 35 25 15 0 5 Age (Myrs) Western Cascade Arc (37-15 Myrs) Challis Arc (55-42 Myrs) High Cascade Arc (5-0…

Chapters 5 and 6 Chapters 5 and 6 Igneous, Sedimentary, and Metamorphic Rocks.. 1 How are Igneous Rocks formed? Question of the Day. Learning Targets 1). You will be able…

The once and future global cooling: lessons from prehistory Gregory J. Retallack University of Oregon Eocene-Oligocene paleosols Badlands National Park, South Dakota Grassland…