* The hole may be leaking 'fault lubricant' that reduces stress on two plates * The fault could unleash a magnitude-9 earthquake in the Pacific Northwest * READ MORE: Extra layer of plate tectonics could be causing tremors in Pacific ============================================================= Scientists fear a hole in a 600-mile-long fault line in the Pacific could trigger a catastrophic earthquake that would decimate cities along the northwestern US. The hole spewing hot liquid sits 50 miles off the shoreline of Oregon, on the boundary of the dipping fault known as Cascadia Subduction Zone, which spans from Northern California into Canada. This geological...