Images

 Map of distribution of fine- and coarse-grained sand, Stellwagen Bank.  Blue and purple = boulder ridges.  Redlines = leading edges of sand sheets

A look into the USGS Pacific Coastal and Marine Science Center’s Marine Minerals Laboratory Suite.

Woods Hole Coastal and Marine Science Center Oceanographer, Neil Ganju, sharing science at the 2017 Woods Hole Science Stroll outreach event

Gerry Hatcher (left) and Shawn Harrison work on their video-camera station atop a hotel in Santa Cruz, California.

For the first time, high-resolution images show the three-dimensional structure of massive ice deposits on Mars. 

This NASA HiRISE image shows an icy scarp on Mars in the context of a broader area. 

Map of Edwin B Forsythe National Wildlife Refuge, N.J., marsh shoreline change rates.

Basemap of the United States with an overview image of elevation models

Authigenic carbonate supplies the foundation for deep-sea corals, including colonies of bubblegum corals (Paragorgia) seen here. 
 

(A) Maximum Likelihood Classification (MLC) with two inputs, slope, and ISO-classified backscatter for the whole survey area. (B) MLC with five inputs, slope, ISO-classified backscatter, bathymetry, hillshaded-relief, and curvature.

A look into the USGS Pacific Coastal and Marine Science Center’s Marine Minerals Laboratory Suite.

Screenshot of home page of story map.

Glow from an active ocean entry on Kīlauea Volcano's Kamokuna lava delta was visible on the evening of September 27, when the 2017 delta was near its maximum size of 8-10 acres. Since then, the edges of the delta began to crumble into the sea. With no lava entering the ocean since November, ocean waves slowly erode the lava delta, further reducing its size.

Thermal map of the 61g lava flow, created on December 12, 2017. The thermal map is limited to the current flow (episode 61g flow), which runs along the center of the map. The blue and green colors correspond to lower surface temperatures, areas of cooled, inactive lava.

Channelized breakouts were active on the pali today, feeding a small ‘A‘ā flow moving through the remains of a small Kīpuka.

An image from a Halema‘uma‘u time-lapse camera taken on December 5 at 4:41 am, just after the collapse. The portion of the rim that fell into the Halema‘uma‘u lava lake triggered intense spattering on the lake margin where the material impacted the lake.

Geologist examines spatter and ash deposits within Hawai‘i Volcanoes National Park along Kīlauea's southwest rift zone. New understanding of the age of the ash deposits, based on years of careful research, has prompted an important revision of the ages of these surface lava flows. USGS photograph by Tim Orr, November 6, 2015.

Illustration of the basic process of magma formation, movement to the surface, and eruption through a volcanic vent.

Scientists perform maintenance on volcano monitoring stations in the crater of Mount St. Helens.

Mud Creek slide from south side of north upper terrace (above north and south berms). Note tension cracks and offset on the terrace to the north.

The dark-colored ‘A‘ā flow advancing toward the South Kona coastal village of Ho‘ōpūloa (foreground) on April 17, 1926, is a reminder of why Island of Hawai‘i residents should be aware of the hazards posed by the volcanoes on which they live. This flow was fed by eruptive vents that opened high on Mauna Loa's Southwest Rift Zone three days earlier.

On Tuesday, December 5, while mapping the 61g lava flow field, HVO geologists found that the active breakouts closest to the emergency route were 1.8 km (1.1 miles) from the gravel road. This spiny pāhoehoe breakout was small, about one meter (yard) in size, and weak.