| 21. | The black triangles indicate the Late Eocene Hatillo Thrust fault.
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| 22. | Most are so-called blind thrust faults that lie hidden in the earth at steep angles.
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| 23. | The 1994 Northridge quake, linked to a blind thrust fault near Los Angeles, registered 6.7.
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| 24. | Until now, most scientists believed blind thrust faults produced quakes of only up to 6.75-magnitude.
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| 25. | The destructive 1994 quake in Northridge, California was caused by a previously-undiscovered blind thrust fault.
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| 26. | No large historic earthquakes are known to have occurred on the Mount Diablo Thrust Fault.
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| 27. | This effect is particularly clear in the case of detachment faults and major thrust faults.
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| 28. | The Mount Diablo thrust fault runs through Alamo releasing small tremors about every other month.
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| 29. | We think the major hazard threatening Los Angeles right now are these blind thrust faults,
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| 30. | It is a thrust fault, meaning the sides of the fault push toward each other.
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