Images

Huckleberry Ridge Tuff deposit exposed on Mt. Everts, near the northern boundary of Yellowstone National Park. The deposit was created by ash falling from the plume early in the eruption sequence, 2.08 million years ago. Photo by Madison Myers, Montana State University.

Photo of the Old Faithful Inn lobby, which features a six-story-tall fireplace and chimney made from rocks quarried form a rhyolite lava flow in Yellowstone.  NPS photo by Jim Peaco, July 22, 2013.

Map of Yellowstone National Park showing Brimstone Basin and other areas known to release carbon dioxide from the ground.

YVO Webcam, October 27, 2012. Webcam overlooks Biscuit Basin in Yellowstone National Park.

View of ripples caused by wind winnowing of the Huckleberry Ridge Tuff fall deposits at Mount Everts. Other layers below show evidence for rain and hail landing with the falling ash. Scale in centimeters and inches.

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Image of Biscuit Basin (visible between the trees) captured by the YVO mobile webcam on June 17, 2012, when it was positioned on a hill just east of the basin.

Google maps photo taken just north of Ashton, ID, along U.S. Route 20. The photo was taken looking north towards Island Park, ID. The forested ridge in the distance marks the margin of a caldera that formed 2.08 million years ago, when the Huckleberry Ridge Tuff erupted.

Sulfur “cinder” attached to a sampling tube that was extracted from Cinder Pool in Norris Geyser Basin.  The “cinder” is sulfur that existed as a molten layer at the bottom of the pool and was carried upward by gas and solidified.  The black color is due to the presence of finely dispersed pyrite.

Steam rises from the Mud Geyser fumarole on the northeast side of the Mud Volcano thermal area in Yellowstone National Park. Gas that discharges from Mud Geyser has the most magmatic character of any sampled feature in Yellowstone.

Google Maps photo taken at the intersection of U.S. Route 20 and Old Hwy 47 in Idaho, looking west. The tops of Moonshine Mountain and Silver Lake dome, rhyolite lava flows located inside the caldera, are indicated with a dashed black line.

USGS employees deploys a water conductivity/temperature/depth probe (AquaTroll) for a temporary study along the Madison River, Yellowstone.

Seismicity is shown for January 17, 2010 through the Feb 8, 2010. Borehole seismometer B207 is located about 7 miles (12 km) northeast of the 2010 swarm. Seismic data are provided by the National Science Foundation funded Plate Boundary Observatory operated by UNAVCO.

YVO's mobile webcam system as deployed in September 2010 near Lake Butte.

National Park Service employee inspects a Plate Boundary Observatory strainmeter/seismometer station.

Image of elk captured by the YVO mobile webcam on June 25, 2010, when it was positioned atop Lake Butte with a view of the north side of Yellowstone Lake.

Cross section through the trunk of a lodgepole pine tree from Cooking Hillside near Mud Volcano, Yellowstone National Park.  The earliest date for this tree is 1916 and it died in 1990. Spongy white-gray areas are foam insulation that was injected into the sample to reinforce the structure of the wood.

Data are collected every two minutes and sent by radio once per day to a server where values are plotted and released to the public internet.

The Grey’s Landing Ignimbrite in Idaho (Dr. Thomas Knott, of the University of Leicester, England, gives the scale of the cliff). The entire cliff (and more not seen!) would have been deposited in a matter of moments as it welded to the land surface during a super eruption about 8.7 million years ago.

This two-image mosaic is one of the highest resolution views acquired by the Cassini spacecraft during its imaging survey of the geyser basin capping the southern hemisphere of Saturn's moon Enceladus. 

Overview of central West Thumb Geyser Basin.  USGS photo by Pat Shanks, 2009.