Subduction zones or expanding earth?

expanding earth subduction zones theory growing Are there subduction zones or is something else or nothing else happening?

Subduction zones are a geology theory where the colliding tectonic plates are moving above/underneath each other.

But do they exist and what happens when geology evidence seems to suggest that areas where they are meant to be happening are not theoretically possible?

Thanks to 'Warpedweaver' who supplied the link to the article in the chat.

Newport-Inglewood fault zone (NIFZ)

UC Santa Barbara geologist Jim Boles has found evidence of helium leakage from the Earth’s mantle along a 30-mile stretch of the Newport-Inglewood Fault Zone in the Los Angeles Basin. Using samples of casing gas from two dozen oil wells ranging from LA’s Westside to Newport Beach in Orange County, Boles discovered that more than one-third of the sites — some of the deepest ones — show evidence of high levels of helium-3 (3He).

Considered primordial, 3He is a vestige of the Big Bang. Its only terrestrial source is the mantle. Leakage of 3He suggests that the Newport-Inglewood fault is deeper than scientists previously thought.
A Deep, Dark Mystery

3He from the Big Bang is only a theory. The Newport-Inglewood 'subduction zone' goes against all the previous studies and geology interpretation of the area.

The San Andreas fault line and the Newport-Inglewood fault line are two fault lines that have been studied intensely. How can geology get these so wrong? A good theory predicts ...

“The results are unexpected for the area, because the LA Basin is different from where most mantle helium anomalies occur,” said Boles, professor emeritus in UCSB’s Department of Earth Science. “The Newport-Inglewood fault appears to sit on a 30-million-year-old subduction zone, so it is surprising that it maintains a significant pathway through the crust.”

Blueschist found at the bottom of nearby deep wells indicates that the Newport-Inglewood fault is an ancient subduction zone — where two tectonic plates collide — even though its location is more than 40 miles west of the current plate boundary of the San Andreas Fault System. Found 20 miles down, blueschist is a metamorphic rock only revealed when regurgitated to the surface via geologic upheaval.
A Deep, Dark Mystery

Subduction zones hypothesis or expanding earth evidence? Or at least that modern geology theory is not very correct and alternative geology theories and ideas need to be considered and investigated?

The study’s findings contradict a scientific hypothesis that supports the existence of a major décollement — a low-angle thrust fault — below the surface of the LA Basin. “We show that the Newport-Inglewood fault is not only deep-seated but also directly or indirectly connected with the mantle,” Boles said.

“If the décollement existed, it would have to cross the Newport-Inglewood fault zone, which isn’t likely,”
A Deep, Dark Mystery

Or could the Earth itself be creating the gas and other material now? Perhaps evidence that 'new material' can be created in and by our planet and perhaps that you could have new material for a growing earth?

Original research article: Mantle helium along the Newport-Inglewood fault zone, Los Angeles basin, California—A leaking paleo-subduction zone