⏰ when

When was the Mohorovičić discontinuity discovered?

Earth scienceSeismology

Quick Answer

In 1909, when Andrija Mohorovičić identified the boundary between Earth’s crust and mantle.

The Full Story

Croatian seismologist Andrija Mohorovičić discovered the Moho in 1909 by studying earthquake waves recorded in the Zagreb region. He noticed that seismic waves changed speed abruptly at a certain depth, indicating a transition between two different layers of Earth. That boundary is now known as the Mohorovičić discontinuity, or Moho. It remains one of the fundamental structures in Earth science.

Key Facts

1.Discovered in 1909
2.Named after Andrija Mohorovičić
3.Marks the crust-mantle boundary

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"The hidden boundary beneath Earth’s crust, discovered in 1909"