Pisgah Crater
by Jim Thompson
Title
Pisgah Crater
Artist
Jim Thompson
Medium
Photograph - Digital Photography
Description
There is no reliable date of when Pisgah Crater last erupted. Some believe that Pisgah Volcano is the youngest vent, of four cinder cones, in the Lavic Lake volcanic field. There may have been activity at this site as recent as 2,000 years ago; however others believe the last eruption occurred as early as 20,000 to 50,000 years ago. It is too young for the commonly used potassium-argon dating technique usable on specimens over 100,000 years old; as the volcano is basaltic, finding a reliable source of potassium for dating purposes would be difficult anyway. No charred organic material for radiocarbon dating has been found.
Uploaded
October 19th, 2016
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Viewed 303 Times - Last Visitor from Chanhassen, MN on 04/15/2024 at 1:20 PM
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