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A cave on the northwestern coast of Sumatra holds a remarkable record of big tsunamis in the Indian Ocean.
The limestone opening, close to Banda Aceh, retains the sandy deposits washed ashore by huge, earthquake-induced waves over thousands of years.
"The tsunami sands just jump right out at you because they're separated by guano layers. There's no confusing the stratigraphy (layering)," explains Dr Jessica Pilarczyk.
"What we think we have is actually a near-complete sequence of late-Holocene deposits. This is amazing because usually the records we have are fragmentary at best. This coastal cave is a unique 'depot centre', and it's giving us a remarkable snapshot of several thousands of years, allowing us to figure out every single tsunami that would have taken place during that time," said Dr Pilarczyk, who is affiliated also to Rutgers University, US.
reply to post by aboutface
S&F - I was reading this off another forum -a very interesting slice of geological history
should also be mandatory reading for young earth creationists