YELLOWSTONE NATIONAL PARK
(photos from the textbook CD)
Yellowstone Hotspot - the Yellowstone Caldera and surrounding areas are heavily forested mountainous areas
Yellowstone Hotspot - a considerable percentage of Yellowstone’s forests was allowed to burn in the late 1980s. The devastation is readily seen throughout the park today, over two decades later.
Grand Canyon of the Yellowstone - hydrothermally metamorphosed rocks exposed in a rocky gorge along the Yellowstone River. Superheated groundwater is common in the area, which hydrothermally alters bedrock.
Grand Canyon of the Yellowstone - hydrothermally metamorphosed rocks exposed in a rocky gorge along the Yellowstone River.
Grand Canyon of the Yellowstone - hydrothermally metamorphosed rocks exposed in a rocky gorge along the Yellowstone River.
Obsidian Cliff - Pleistocene-aged obsidian and snowflake obsidian (partially devitrified obsidian with spots of whitish cristobalite crystals) of the Roaring Mountain Member of the Plateau Rhyolite.
Hot spring in the Yellowstone Hotspot.
Mammoth Hot Springs and whitish terraces of travertine (calcitic hot spring deposits).
Mudpot in Yellowstone Hotspot.
Old Faithful Geyser in the Yellowstone Hotspot.
Travertine cone at Mammoth Hot Springs, in the northwestern part of Yellowstone Park. Most hot springs and geysers at Yellowstone deposit siliceous sinter (geyser-deposited siliceous sinter is called geyserite). At Mammoth Hot Springs, travertine is deposited. Travertine is composed of CaCO3 (calcite). Most cave speleothem is also composed of travertine.