It is theoretically possible, though there's no known link between the two fault systems, geophysicists say. And because there's still so much to learn about the complicated fault system that ruptured, it's difficult to say whether the San Andreas Fault took on additional stress from the recent quakes, they say. The magnitude-7.1 quake on July 5 ruptured a known portion of the Little Lake Fault zone, while the magnitude-6.4 quake that hit the prior day ruptured a previously unmapped region of the fault zone, Glenn Biasi, a geophysicist with the USGS in Pasadena, California, told Live Science in an email....