Long Valley Caldera is a depression in eastern California that is adjacent to Mammoth Mountain. The valley is one of the Earth's largest calderas, measuring about 20 mi (32 km) long (east-west), 11 mi (18 km) wide (north-south), and up to 3,000 ft (910 m) deep.
A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma or by circulation through faults to hot rock deep in the Earth's crust. In either case, the ultimate source of the heat is radioactive decay of naturally occurring radioactive elements in the Earth's mantle, the layer beneath the crust.
Geothermal energy is the thermal energy in the Earth's crust which originates from the formation of the planet and from radioactive decay of materials in currently uncertain but possibly roughly equal proportions. The high temperature and pressure in Earth's interior cause some rock to melt and solid mantle to behave plastically. This results in parts of the mantle convecting upward since it is lighter than the surrounding rock. Temperatures at the core–mantle boundary can reach over 4000 °C (7200 °F).
Steamboat Springs is a small volcanic field of rhyolitic lava domes and flows in western Nevada, located south of Reno. There is extensive geothermal activity in the area, including numerous hot springs, steam vents, and fumaroles. The residential portions of this area, located mostly east of Steamboat Creek and south of modern-day SR 341, are now known simply as Steamboat.
Chena Hot Springs is an unincorporated community and hot spring resort in the Fairbanks North Star Borough, Alaska, United States, 56.5 miles northeast of Fairbanks near the Chena River State Recreation Area. The resort makes use of the first low-temperature binary geothermal power plant built in Alaska, and is working on several alternative energy projects, including production and use of hydrogen and vegetable oil for fuel. The resort is conducting collaborative experiments in greenhouse production of vegetables with the University of Alaska Fairbanks Agricultural and Forestry Experiment Station.
Geothermal power is electrical power generated from geothermal energy. Technologies in use include dry steam power stations, flash steam power stations and binary cycle power stations. Geothermal electricity generation is currently used in 26 countries, while geothermal heating is in use in 70 countries.
Scovern Hot Springs is a thermal spring system, and former settlement in the Kern River Valley of the Southern Sierra Nevada, in Kern County, California.
Pagosa hot springs is a hot spring system located in the San Juan Basin of Archuleta County, Colorado. The town of Pagosa Springs claim they are the world's deepest known geothermal hot springs.
Verde Hot Springs is a grouping of thermal mineral springs near the town of Camp Verde in Yavapai County, Arizona. The springs are located at the western bank of the Verde River. There are ruins of a former historical resort at the site and bathhouse.
Mystic Hot Springs, previously known as Monroe Hot Springs and Cooper Hot Springs are located in northeastern Monroe, Utah. The hot mineral water emerges from the spring at 168 °F (76 °C). The water flows into two smaller pools with temperatures between 92 and 102 °F.
Travertine Hot Springs are a group of geothermal mineral springs located near the town of Bridgeport, California.
Kanuti Hot Springs is a geothermal spring in an area of critical environmental concern in the Kanuti National Wildlife Refuge, Alaska, 15 miles north of the Arctic Circle.
Gold Strike Hot Springs, also known as Goldstrike Hot Springs, Nevada Hot Springs and Gold Strike Canyon Hot Springs are a group of hot mineral water springs near Hoover Dam on the Arizona/Nevada border near historic Boulder City.
Baranof Warm Springs are a series of ten geothermal mineral springs located in the small community of Baranof Warm Springs in Sitka, Alaska. The springs are surrounded by the Tongass National Forest.
Crystal Springs hot springs is a system of geothermal springs and seeps near Ash Springs, located at the site of a ghost town, Crystal Springs, Nevada. Several marshes and springs are located along the White River.
Breitenbush Hot Springs, also known as Breitenbusher Hot Springs, is a thermal mineral spring system along the Breitenbush River near the historic town of Breitenbush, Oregon, United States.
Akutan Hot Springs is a system of several dozen thermal springs and a geyser in the Akutan geothermal area, Akutan Island, Alaska.
Truth or Consequences Hot Springs is a thermal spring system located in the Hot Springs Artesian Basin area of Truth or Consequences, New Mexico in Sierra County.
Yugawaralite is a clear or pinkish mineral of the Zeolite group. It was first described by Sakurai and Hayashi (1952) near a waterfall by some hot springs near Yugawara.
