Arctic Ocean may have been ice free 6000 Years Ago

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Arctic Ocean may have been ice free
6000 Years Ago

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20 Oct 08 — Recent mapping of a number of raised beach ridges on the north coast of Greenland suggests that the ice cover in the Arctic Ocean was greatly reduced some 6000-7000 years ago. The Arctic Ocean may have been periodically ice free.

”We still don’t know whether the Arctic Ocean was completely ice free, but there was more open water in the area north of Greenland than there is today,” says Astrid Lyså, a geologist and researcher at the Geological Survey of Norway (NGU).

”The architecture of a sandy shore depends partly on whether wave activity or pack ice has influenced its formation. Beach ridges, which are generally distinct, very long, broad features running parallel to the shoreline, form when there is wave activity and occasional storms. This requires periodically open water,” Astrid Lyså explains.

”This stands in sharp contrast to the present-day situation where only ridges piled up by pack ice are being formed,” she says.

              Hmmm. Do you suppose that natural forces might somehow be
              melting the ice in Arctic today?

              Do you suppose that natural forces might have somehow melted
              that Arctic ice some 6,000 years ago?

              Or did that ice disappear because our ancestors were driving SUVs?  

http://www.sciencedaily.com/releases/2008/10/081020095850.htm
Thanks to Don et Al and Dr. Ben for this link


 



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