Thursday, March 21, 2019

Thursday, March 21, 2019

ALASKA PACIFIC UNIVERSITY: Greenland Impact Crater Age Question

Alaska Pacific University issued the following announcement on Jan. 23.

Greenland was ground zero for a meteorite impact at some time in the past. Maybe as recently as 12,000 years ago. Or as long as 1,000,000+ years ago. Determining the age of the impact site is the next step to seeing how (or even if) this impact would have changed life for people living in the area.

UAF Geophysical Institute's Mark Fahnestock is part of the team working to establish an age for the impact crater. Fahnestock studies the ice covering the crater at the moment. Radar imaging helped scientists identify the crater under the Greenland ice sheet.

Getting to this point in the research was work in itself. First the team had to succesfully establish the crater was in fact an impact crater and not a natural geologic feature. Now that *what* happened is agreed upon by scientists the next question to answer is *when*. And in order to answer the question researchers like Fahnestock have to put forward a hypothesis that can be tested by other scientists.

Read more about Fahnestock's work with this crater:…/

First recorded during an interview at the American Geophysical Union (AGU) 2018 annual fall meeting. #AGU18 #UAFatAGU

Original source can be found here.

Source: Alaska Pacific University 

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