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Erratic Rock State Natural Site in McMinnville, Oregon

Published May 03 2021 at 3:00 PM GMT
Key
Points
  • Thousands of years ago, cataclysmic floods inundated the Pacific Northwest and sent glaciers sailing across what is now Oregon.
  • When these glaciers melted, they left behind large pieces of rock carried from hundreds of miles away.
  • Known as glacial erratics, these rocks differ in size and composition from native rocks.
  • The largest known glacial erratic in the Willamette Valley perches serenely atop a hill near McMinnville and weighs around 36-tons.
  • The massive rock was transported from Canada.




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  • Published May 3, 2021 3:00 PM GMT