North American Continent is a Layer Cake, Scientists Discover
August 25, 2010
August 25, 2010
BERKELEY, Calif., Aug. 25 -- The University of California at Berkeley issued the following news release:
The North American continent is not one thick, rigid slab, but a layer cake of ancient, 3 billion-year-old rock on top of much newer material probably less than 1 billion years old, according to a new study by seismologists at the University of California, Berkeley.
The finding, which is reported in the Aug. 26 issue of Nature, explains inconsistencies arising fr . . .
The North American continent is not one thick, rigid slab, but a layer cake of ancient, 3 billion-year-old rock on top of much newer material probably less than 1 billion years old, according to a new study by seismologists at the University of California, Berkeley.
The finding, which is reported in the Aug. 26 issue of Nature, explains inconsistencies arising fr . . .