After a collision with Eurasia tectonic plates when about 40-50 million years ago the area was earthquake, 8.0 magnitude — in the year 1934, or, when the 81 years before.
After colliding with the Eurasian tectonic plate, about 40-50 million years ago this area was an earthquake of 8.0 magnitude on 1934, when 81 years ago.
After collided with Eurasia plates when about 40-50 million years ago. In this area was the earthquake 8.0 magnitude when the year 2001 1934 or when 81 years ago.