A) 2.50 to 2.20 million years ago B) 2.15 to 1.95 million years ago C) 2.08 to 1.80 million years ago D) 1.45 to 1.30 million years ago
A) Mesa Falls Tuff B) Island Park Rhyolite C) Huckleberry Ridge Tuff D) Rhyolite of Snake River Butte
A) 2.16 million years B) 2.08 million years C) 1.95 million years D) 1.30 million years
A) Eruption of the Island Park Rhyolite B) Eruption of the Mesa Falls Tuff C) Eruption of the Blue Creek flow D) Eruption of the Huckleberry Ridge Tuff
A) Exceeds 1 km B) Roughly 2.5 m C) Approximately 150 m D) About 430 m
A) Nine B) Twelve C) Two D) Four
A) More than 2,450 km3 B) Approximately 1,000 km3 C) Less than 50 km3 D) About 280 km3
A) Pearlette type B B) Mesa Falls tephra C) Island Park ash D) Pearlette type S
A) 1.30 million years B) 1.9476 million years C) 1.9811 million years D) 2.07 million years
A) 200 kyr B) 100 kyr C) 70 kyr D) 500 kyr
A) Sheridan Reservoir system B) Mesa Falls magmatic system C) Huckleberry Ridge system D) Lyle Spring magmatic system
A) 1–2 km3 B) 10–20 km3 C) 5 km3 D) 23 km3
A) Huckleberry Ridge Tuff B) Mesa Falls Tuff C) Bishop Mountain Flow D) Island Park Rhyolite
A) Pearlette type S B) Henry's Fork ash C) Bishop Mountain tephra D) Pearlette type B
A) 1–2 km B) 20 km C) 10–12 km D) 5–8 km
A) Silver Lake B) Red Mountains C) Mount Everts D) Big Bend Bridge
A) Four B) Nine C) Two D) Five
A) 600–700 °C B) 900–1000 °C C) 750–800 °C D) 1100–1200 °C
A) Big Bend Ridge B) Henry's Fork Caldera C) Huckleberry Ridge Caldera D) Red Mountains
A) Yellowstone excursion B) Big Bend excursion C) Huckleberry Ridge geomagnetic excursion D) Mesa Falls excursion
A) Montana, Washington, and Oregon B) Wyoming, Idaho, and Montana C) Idaho, Nevada, and Utah D) Wyoming, Utah, and Colorado
A) 10,000 km2 B) 29,000 km2 C) 5,000 km2 D) 17,000 km2
A) Plateau Seismic Center B) Yellowstone Volcano Observatory C) Volcanic Research Institute D) National Park Geological Service
A) It is predicted to happen next century B) It is currently occurring C) It is expected within a decade D) It is not considered imminent
A) Lava Creek Group B) Yellowstone Plateau C) Absaroka Volcanic Supergroup D) Teton Volcanic Complex
A) Ground deformation patterns B) Seismic tomography showing a broad thermal anomaly C) Presence of basaltic flows D) History of the Laramide orogeny
A) Lidar mapping B) Satellite heat sensing C) Deep crustal drilling D) Hydrothermal flow analysis
A) Red Mountains B) West Thumb C) Mallard Lake D) Elephant Back
A) A thin layer of ash B) A resurgent dome C) A glacial deposit D) Thick intracaldera fill
A) Robert L. Christiansen B) Myers et al. C) The Island Park commission D) The Huckleberry Ridge team
A) A fault scarp B) A resurgent dome C) A lava flow D) A glacial deposit
A) Big Bend basin B) Island Park basin C) Snake River basin D) West Thumb basin
A) A northwest-trending axial graben B) A volcanic crater C) A north-south trending strike-slip fault D) A circular caldera rim
A) Yellowstone Rim Plateau B) Mallard Plateau C) Madison Plateau D) Grand Canyon Plateau
A) Obsidian-rich rhyolite B) Columnar-jointed basalt C) Limestone D) Volcanic tuff
A) Volcanic ash fall accumulation B) Hydrothermal alteration C) Sediment deposition from glaciers D) Iron oxidation from river water
A) Two B) Three C) Four D) Five
A) Flat Mountain Rhyolite B) Lewis Canyon Rhyolite C) Mount Jackson Rhyolite D) A black, glassy vitrophyre
A) A layer of glacial till B) A 3-meter thick rhyolite flow C) A 20–30 cm loose crystal ash unit D) A thick basaltic lava flow
A) Ventura, California B) The Arctic Circle C) Gulf of Mexico D) Regina, Saskatchewan
A) Mallard Lake Member B) Central Plateau Member C) Roaring Mountain Member D) Upper Basin Member
A) South Biscuit Basin Flow B) Dunraven Road Flow C) North Biscuit Basin Flow D) Riverside Flow
A) 230 m B) 5 km C) 35 m D) 13 km
A) Central Plateau Member B) Obsidian Creek Member C) Upper Basin Member D) Mallard Lake Member
A) A supereruption B) A massive lava flow C) A steam explosion D) The collapse of the caldera
A) Slips on pre-existing faults B) Hydrothermal fluid pressure C) Magma movement D) Tidal forces
A) NASA B) Yellowstone Volcano Observatory C) Geological Society of America D) University of Utah
A) Within just decades B) Within several millennia C) Within a few centuries D) Instantly without warning |