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There are no activity reports for Sand Mountain Field.
Available Weekly Reports
There are no Weekly Reports available for Sand Mountain Field.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|0070 ± 150 years||Unknown||Confirmed||2||Radiocarbon (corrected)||Lost Lake cones|
|0800 BCE ± 300 years||Unknown||Confirmed||2||Radiocarbon (corrected)||Nash Crater|
|0900 BCE ± 100 years||Unknown||Confirmed||2||Radiocarbon (corrected)||North Sand Mtn and other cones|
|1740 BCE ± 300 years||Unknown||Confirmed||2||Radiocarbon (corrected)||North and south of Sand Mountain|
|2290 BCE ± 300 years||Unknown||Confirmed||2||Radiocarbon (corrected)||Nash Crater and other cones|
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.
Hildreth W E, 2007. Quaternary magmatism in the Cascades--geologic perpectives. U S Geol Surv Prof Pap, 1744: 1-125.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Sherrod D R, Taylor E M, Ferns M L, Scott W E, Conrey R M, Smith G A, 2004. Geologic map of the Bend 30- x 60-minute quadrangle, central Oregon. U S Geol Surv Map , I-2683, 1:100,000 scale and 48 p text.
Taylor E M, 1968. Roadside geology, Santiam and McKenzie Pass Highways, Oregon. Oregon Dept Geol Min Ind Bull, 62: 3-34.
Taylor E M, 1981. Roadlog for central High Cascade geology, Bend, Sisters, McKenzie Pass, and Santiam Pass, Oregon. U S Geol Surv Circ, 838: 59-83.
Wood C A, Kienle J (eds), 1990. Volcanoes of North America. Cambridge, England: Cambridge Univ Press, 354 p.
The Sand Mountain volcanic field consists of a group of 23 basaltic and basaltic-andesite cinder cones along a N-S line immediately west of the Cascade crest NW of Mount Washington. Two cone alignments trending NNW and NNE intersect near the largest cinder cone, Sand Mountain. A series of young, unvegetated lava flows originating from vents on the west side of the chain of cones were erupted primarily during a 1000-year period from about 3000-4000 years ago. Lava flows traveled predominately to the west, blocking local drainages and forming several small lakes. The Lost Lake cinder cone group at the north end of the chain was active about 2000 years ago.