Seismologists surprised by deep California quakes
New type of weak temblors in upper mantle detected
![Newport-Inglewood Fault](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/10/100616_TS_earthquake_main.jpg?fit=860%2C460&ssl=1)
CURIOUS QUAKES A dense network of seismometers monitoring the Newport-Inglewood Fault in Southern California detected earthquakes originating from far deeper underground than once thought possible.
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