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Available Weekly Reports
There are no Weekly Reports available for Jordan Craters.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1250 BCE (after)||Unknown||Confirmed||2||Radiocarbon (uncorrected)||Coffeepot Crater|
The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.
Cascades Volcano Observatory, 2013-. Young volcanoes in WA, OR & ID. http://volcanoes.usgs.gov/observatories/cvo/.
Chitwood L A, 1994. Inflated basaltic lava--examples of processes and landforms from central and southeast Oregon. Oregon Geol, 56: 11-21.
Hart W K, Mertzman S A, 1983. Late Cenozoic stratigraphy of the Jordan Valley area, southeastern Oregon. Oregon Geol, 45: 15-19.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Otto B R, Hutchison D A, 1977. The geology of the Jordan Craters, Malhuer County, Oregon. Ore Bin, 39: 125-140.
Russell J K, Nicholls J, 1987. Early crystallization history of alkali olivine basalts, Diamond Craters, Oregon. Geochim Cosmochim Acta, 51: 143-154.
Smith R L, Shaw H R, 1975. Igneous-related geothermal systems. U S Geol Surv Circ, 726: 58-83.
Jordan Craters volcanic field consists of well-preserved basaltic lava flows and scoria cones that are the youngest and northernmost of a group of three Quaternary lava fields covering an area of 250 sq km in SE Oregon. The Pleistocene 1473-m-high Clarks Butte shield volcano and Rocky Butte (Lava Butte) lava fields lie to the south, along the trend of regional Basin and Range faulting. Jordan Craters lie on the Owyhee-Oregon plateau at the SE end of a series of widely scattered young volcanic fields extending SE from Bend, Oregon. Coffeepot Crater at the NW end of the lava field was the source about 3200 years ago or later of one of Oregon's youngest lava flows, which covered 75 sq km with 1.6 cu km of olivine-basaltic pahoehoe. The flows dammed local drainages, forming the two small Upper and Lower Cow Lakes at the SE end of the lava field. Jordan Craters is renowned for its excellent exposures of a wide variety of youthful lava-flow features and has similarities to Holocene basaltic flows of Idaho's Snake River Plain to the east.