Turning back the clock 10,000 years around the Great Lakes
Submitted by Andy B on Thursday, 21 December 2006 Page Views: 5164
DigsCountry: United States Scientists explore land bridge and petrified trees in Lake Huron. They hope to learn more about what the Great Lakes' shorelines looked like about 10,000 years ago. They explored a limestone land bridge that went from Alpena, Mich., to Goderich, Ontario - a distance of about 125 miles - and an underwater forest of petrified trees in Lake Huron.The 2006 research, in which more than 500 dives were made, is the subject of a documentary film, "Great Lakes, Ancient Shores, Sinkholes." It premiered recently at the Cranbrook Institute of Arts in Bloomfield Hills, The Oakland Press reported.
Another study is planned for 2007 and should result in a second film, "Great Lakes, Ancient Shores," said Luke Clyburn, lieutenant commander of the Great Lakes Division of the U.S. Naval Sea Cadet Corps and a Great Lakes ship captain.
"What we are learning about the Great Lakes of several thousand years ago may change the way we think of this area," Clyburn said.
Clyburn and other scientists have been filming in the Great Lakes for at least 25 years.
There is a petrified forest in 40 feet of water in Lake Huron about two miles offshore from Lexington, Mich., he said. Some of the trees have been carbon-dated to indicate they are 6,980 years old.
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