Cape Town, South Africa – Following recent earthquakes in both Cape Town and Johannesberg days apart, as well as the U.S.A, #earthquakes has been a trending topic.
While earthquakes may be a regular occurrence in places like the U.S.A and India, it’s a rare occurrence in the Mother Land.
An earthquake is defined as a sudden movement of the earth’s lithosphere. Earthquakes are caused by the release of built-up stress within rocks along geologic faults. They are usually followed by scary aftershocks.
The burning question, What causes an earthquake? has been on everybody’s lips.
Here are a few key reasons:
Some minor causes such as landslides, avalanches, the collapse of heavy rocks are known to cause triggers.
Decrease in pore pressure as a result of water extraction.
Increase in pore pressure as a result of heavy rain.
Underground mining activity
According to the record books, on May 22, 1960 the largest recorded earthquake in the world was a magnitude 9.5 in Chile.
The seismic waves shook the entire earth for days after the record-breaking event.
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