Hello! how do earthquakes occur at the oceanic- oceanic plate divergence : ) ?

As the plates diverge lava pushes through the mantle, cools and forms a new section of crust.

Explanation:  Plates moving slowly along side each other create friction and intense heat as they slide resulting in volcanic activity if the rock melts. Earthquakes can occur if the plate slips sliding away or towards each other.

seismic wave -

an elastic wave in the earth produced by an earthquake or other means.

explanation:

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks