"5.3 Million Years of Sea Level Change on One Cliff" Topic
3 Posts
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Tango01 | 17 Apr 2014 9:23 p.m. PST |
"It's not often that we think about deep time. Lucky to live for a century, humans flitter like mayflies across Earth's surface, our own epoch an eyeblink in a planetary history that's largely hidden from everyday consciousness.Every now and then, though, that history punches right through into the present. And when it does, it's often a history written in stone: the fossils Darwin found on a mountaintop, the sandstone formations that forced 18th century science to contemplate a world far more ancient than a few thousand Biblical years.And such is the sort of story told in the cliffs at Punta di Maita, Italy (photo below). Each band is a layer of seafloor sediment that accumulated long ago in 21,000-year orbital cycles, and was eventually pushed by tectonic activity into their current formation. They are time made macroscopic — and when microscopic fossils in the layers were analyzed by researchers from Australian National University, they told a climate tale stretching back 5.3 million years
" Full article here. link Amicalement Armand |
jpattern2 | 18 Apr 2014 7:19 a.m. PST |
Very cool, and beautiful, too. |
Tango01 | 18 Apr 2014 11:24 a.m. PST |
Glad you enjoyed it my friend!. (smile). Amicalement Armand |
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