Earthquake and aftershock recorded in South Australia’s Mid North

A magnitude-3.5 earthquake has been felt in South Australia’s Mid North.

The earthquake was recorded north-east of Jamestown just after 10:30pm on Monday at a depth of 10 kilometres, according to Geoscience Australia.

Half an hour later, a magnitude-1.8 aftershock at a depth of 5 kilometres was reported closer to the town.

The earthquake was largely felt in Jamestown, Peterborough, Georgetown and Spalding, and there were even reports from Adelaide and Swan Reach in the Murraylands.

Earlier, Geoscience Australia recorded the earthquake as magnitude-3.6 and the aftershock at magnitude-2.

Geoscience Australia senior seismologist Phil Cummins said he was “not surprised” it was felt as far away as metropolitan Adelaide.

“We’ve got 121 felt reports,” Mr Cummins said.

Before the revision of the earthquake’s depth from 1 to 10 kilometres, Mr Cummins said earthquakes around Flinders Ranges usually recorded at deeper depths.

“The unusual thing is that they tend to be unusually deep for Australia. Australian earthquakes tend to occur at relatively shallow depth,” he said.

“That area around the Flinders Ranges tends to get deeper earthquakes.

“There are a number of reasons speculated on why they might be, but I don’t really know why.”

Last March, a magnitude-4.7 earthquake was recorded east of Peterborough and Jamestown.