Named after the pioneering Croatian seismologist Andrija Mohorovičić, the Moho separates both the oceanic crust and continental crust from underlying mantle. The Mohorovičić discontinuity was first identified in 1909 by Mohorovičić, when he observed that seismograms from shallow - focus earthquakes had two sets of P - waves and S - waves, one that followed a direct path near the Earth 's surface and the other refracted by a high - velocity medium.
who discover the interfaces that mark the boundary between the crust and mantle
Andrija Mohorovičić