Strong 6.2 quake rocks Russia near N. Korea border A 6.2-magnitude earthquake has struck Russia, near the border with China and North Korea, the US Geological Survey says. A POWERFUL 6.2-magnitude earthquake struck early in eastern Russia near the border with China and North Korea, the US Geological Survey said. The epicentre of the quake, which struck at 1300 GMT Friday, was southwest of Vladivostok, around nine kilometers from the Russian border town of Zarubino, at a depth of 561 kilometres, the USGS said. There were no immediate reports of casualties or damage from the quake, which struck seconds after 12am Saturday local time. Since 1900, seven powerful earthquakes of magnitude 8.3 or greater have occurred along the arc, according to the USGS.