Electron Lahar

The Electron Lahar, also known as the Electron Mudflow, was a lahar in the U.S. state of Washington that descended from the summit and sunset amphitheater on Mount Rainier about 500 years ago.[1] It traveled down the west and main forks of the Puyallup River, passed the location of present-day Enumclaw then reached Puget Sound near present-day Auburn.

The Electron Lahars Path

With a volume of 2 to 3 km3 (0.48 to 0.72 cu mi) and an areal extent of about 550 km2 (210 sq mi), the Electron Mudflow buried a large portion of the Puget Sound lowland with hydrothermally altered volcanic material. Many communities in King and Pierce counties, notably Kent, Enumclaw, Orting, Buckley, Sumner, Puyallup and Auburn, are wholly or partly located on top of Electron Mudflow deposits.[2]

The Electron Mudflow was Mount Rainier's most recent event during the Holocene epoch.[2] It was named after the unincorporated community of Electron.

References

 This article incorporates public domain material from websites or documents of the United States Geological Survey.

  1. Lopez, B.; Gwartney, D. (2011). Home Ground: Language for an American Landscape. Trinity University Press. p. 206. ISBN 978-1-59534-088-7. Retrieved 2023-02-06.
  2. "Significant Lahars at Mount Rainier". United States Geological Survey. 2014-11-10. Retrieved 2018-03-18.
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