Images

GeoGirls Geology and Technology Field Camp 2020

Schematic diagram of the magmatic system underneath Yellowstone caldera and the processes leading to a "shadow zone".

Cascades Volcano Observatory Open House May 9, 2020

A typical section of shoreline in the Kapoho area, formed by thick toothpaste lava that originated from Fissure 8 during the 2018 eruption. USGS photo by M. Zoeller.

Sabrina Brown collecting samples from Yellowstone Lake core YL16-2C at the National Lacustrine Core Facility (LacCore) at the University of Minnesota.

Map showing ice cover in the Yellowstone region. Light shaded areas bounded by black and red lines indicate areas covered during the Pinedale (about 20,000-15,000 years ago) and Bull Lake (about 150,000 years ago) glaciations, respectively. Blue lines are contours in thousands of feet on the maximum reconstructed Pinedale glacier surface.

An unnamed small acidic (pH ~3) hot spring (with a temperature of about 55°C at the source) in the Gibbon Geyser Basin of Yellowstone National Park. The yellow region is due to the precipitation of sulfur by sulfide-oxidizing chemotrophic microorganisms.

ANNIMATED GIF: This animated image file (GIF) of the Kīlauea summit water lake is a cropped version this file, showing a close-up view of the lake.

A sample of the digital elevation model from the 2019 LiDAR survey of Kīlauea, showing the vicinity of the former HVO office and Jaggar Museum in Hawaiʻi Volcanoes National Park.

A wide array of phototrophic microbial community textures exhibited in an alkaline (pH ~8.5) hot spring outflow channel in the Biscuit Basin, including thick mats, toadstools, ropes, and pinnacles. The differences in color are due to pigments (chlorophylls, bacteriochlorophylls, and carotenoids) produced by phototrophic microorganisms.

Sapphire Pool, an alkaline (pH ~7.5) spring in the Biscuit Basin area of the Upper Geyser Basin, Yellowstone National Park.

Manuel Nathenson is a scientists emeritus with the USGS Volcano Science Center.

Map of seismicity (yellow circles) in the Yellowstone region during 2019. Gray lines are roads, red line shows the caldera boundary, Yellowstone National Park is outlined by black dashed line, and gray dashed lines denote state boundaries.

ANIMATED GIF: The KWcam webcam has been imaging the Kīlauea summit water lake for just over a year now, tracking visual changes in the lake including water level and color.

A digital elevation map of Yellowstone National Park (left) with the location of Yellowstone Lake indicated by the white box. Satellite image (right) of the study site with collection location of core YL16-2C shown by the red circle. Map was originally published in Sabrina Brown’s dissertation (2019).

Summary diagram of the geological record and timing of the Huckleberry Ridge Tuff eruption. See Swallow et al. (2019) for more details.

A closer view of the braided section of the Fissure 8 channel, with Highway 132 cutting across both branches. USGS photo by M. Zoeller.

This photo looks north along the broad Fissure 8 channel. At its widest section, the Fissure 8 channel is about 430 meters (1400 feet wide). In the upper right section of the photo, Highway 132 can be seen cutting through the braided section of the channel. USGS photo by M. Zoeller.

Dan Dzurisin, of the Cascades Volcano Observatory, conducting a leveling survey at Newberry Volcano, Oregon, in 2002.

"Earthquake camp" of the Hayden expedition in 1871, located on the north shore of Yellowstone Lake near Steamboat Point. Photo by William H. Jackson, courtesy Yellowstone National Park (https://www.nps.gov/features/yell/slidefile/history/jacksonphotos/Image…).

Jo Schmith examining ash from Katla volcano in Iceland.