Helium Leakage from Fault in LA Raises Fears of a Major Earthquake

In a huge rift in the Earth's crust near Los Angeles, it is observed helium leak, and researchers believe that this finding sheds new light on the Newport-Inglewood fault in the basin of Los Angeles.

In a huge rift in the Earth's crust near Los Angeles, it is observed helium leakage, and researchers believe that this finding sheds new light on the Newport-Inglewood fault in the basin of Los Angeles. The fracture is far deeper than scientists used to believe, and an earthquake would be much more devastating than expected.
A report by the US Geological Survey has warned that the risk of 'the big hit in California' has increased dramatically. The geologist Jim Boles from UC Santa Barbara found helium leakage from the Earth's mantle at a stretch of 30 miles of Newport-Inglewood fault in the basin of Los Angeles.

The fault has a slip rate of about 0.6 mm per year and is projected to be able of a 6.0-7.4 magnitude earthquake on the Richter scale. The Newport-Inglewood fault seems to sit on a subduction zone, which is 30 million years old; subsequently it took researchers by surprise the fact that it maintains a path through the crust.

Helium (3He) is a remnant of the Big Bang, and the mantle is its only terrestrial source. Blueschist shows that the fault is an ancient subduction zone - where two tectonic plates collide.

Boles explained 'About 30 million years ago, the Pacific plate was colliding with the North American plate, which created a subduction zone at the Newport-Inglewood fault. Then somehow that intersection jumped clear over to the present San Andreas Fault, although how this occurred is really not known. This paper shows that the mantle is leaking more at the Newport-Inglewood fault zone than at the San Andreas Fault, which is a new discovery. We show that the Newport-Inglewood fault is not only deep-seated but also directly or indirectly connected with the mantle. If the décollement existed, it would have to cross the Newport-Inglewood fault zone, which isn't likely. Our findings indicate that the Newport-Inglewood fault is a lot more important than previously thought, but time will tell what the true importance of all this is.'