Geology and History
Geology and History
Geology and history of Medicine Lake.
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Geology and History of Medicine Lake
Medicine Lake volcano lies in a strongly east-west extensional tectonic environment slightly east of the main Cascade Range arc axis on the Modoc Plateau in northern California.
Eruption History of Medicine Lake Volcano
The eruptive activity at Medicine Lake volcano is probably driven by intrusions of basaltic magma that occur during east-west stretching of the crust in an extensional tectonic environment.
Medicine Lake Caldera
Medicine Lake caldera is a 7 x 12 km (4.3 x 7.5 mi) depression in the summit area of the volcano.
Lava tubes at Lava Beds National Monument
Lava Beds National Monument lies on the north slope of Medicine Lake shield volcano, and contains the highest concentration of lava tube caves in North America. There are up to 500 known lava tube caves within the boundaries of Lava Beds National Monument.
Lava Beds National Monument
Lava Beds National Monument is located in northeastern California about 50 km (31 mi) south of Klamath Falls, Oregon. The monument, established in 1925, includes the sites of many important battles of the Modoc Indian War of 1872-73. It is also known for scores of lava-tube caves and for well preserved young volcanic features.
Glass Mountain obsidian flow, Medicine Lake volcano
Glass Mountain is a spectacular, nearly treeless, steep-sided rhyolite and dacite obsidian flow that erupted just outside the eastern caldera rim and flowed down the steep eastern flank of Medicine Lake volcano.
The Modoc War
The north flank of Medicine Lake volcano was the site for many important battles of the Modoc Indian War of 1872-73.