La zona di transizione fra mantello e nucleo terrestri è stratificata : sua probabile origine
1967
CALOI P.
New evidences about the existence of a transition<br />zone between the lower mantle and the core are carried.<br />In 1964, the author proved this zone is about 160 krns thick and<br />velocity of elastic waves decrease in it gradually. Now he judges the<br />velocity of P wave, at the bottom of the transition zone, of 10 km/sec<br />order.<br />The zone results layered, how the record of intervalled, successive<br />pulses proves.<br />For the giustiflcation of this zone the Ramsey's theory is trought fit
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