The flows of Jordan Craters volcanic field are the youngest of a series of large Quaternary basalt fields in the eastern part of the U.S. state of Oregon. The field is thought to be approximately 3200 years old, based on findings of a lake sediment coring experiment in 1986. It was formed by basaltic pahoehoe emanating from vents throughout the area.[4]

Jordan Craters
Coffeepot Crater (left center) was the source of voluminous basaltic lava flows in the Jordan Craters volcanic field of SE Oregon.
Highest point
Elevation	4,833 ft (1,473 m)[1]
Coordinates	43°06′43″N 117°24′58″W[2]
Geography
Location	Malheur County, Oregon, U.S.
Geology
Age of rock	less than 30,000 years [3]
Mountain type	Volcanic field
Last eruption	1250 BCE[1]

The most recent flows come from Coffeepot Crater, a large breached cinder cone. These flows show excellent examples of inflated lava.[5] Historically, it is believed that Coffeepot Crater held a pond of lava that would occasionally breach the sides of the crater to flow freely into the field.[4]

Jordan Craters is approximately 120 miles (200 km) southwest of Boise, Idaho[3] and 18 miles (30 km) northwest of Jordan Valley, Oregon.[4]

The craters are free and open to the public all year.

See also

• List of volcanoes in the United States of America

References

 This article incorporates public domain material from the United States Forest Service document: "Deschutes & Ochoco National Forests – Crooked River National Grassland".  (archived)

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