WHY NORTHERN CAPE SUFFER FROM EARTHQUAKES BUT NOT VOLCANOES
"We like to think Earth is a stable home, but it is not really".
The Northern Cape is South Africa’s largest province surrounded by beautiful mountains, taking up about a third of the country’s total land area, and lies in the dry Nama-Karoo Biome.
Nowadays Northern Cape is a part of a landmass where earthquakes are taking place and no one could point out a live volcano.
We like to think Earth is a stable home, but it is not really.
On the 6th of July early in the morning at 1:39 am local time an earthquake of magnitude 4.2 occurred in Springbok, South Africa it was reported by (CGS) South Africa’s Council for Geoscience.
The depth of the earthquake was 10 km beneath the epicenter near springbok in Namakwa District Municipality.
We are reminded that the Earth continues to change.
Major earthquakes and volcanic eruptions have occurred long before there were humans on Earth.
Northern Cape is far from the Ring of fire that is why there are rare earthquakes and Volcanoes; the Ring of Fire includes the Pacific coasts of South America, North America and Kamchatka, and some islands in the western Pacific Ocean.
The reason it is called the Ring of fire is that the edges make a circle of high volcanic and seismic activities, 75 percent of all the active volcanoes are located in this area and 90 percent of earthquakes occur on this line.
We know that the various forces of nature are responsible for changes in the crust of the earth.
An earthquake is a movement of tremor of the earth’s crust; it originates naturally and below the earth’s surface.
The place of origin of an earthquake below the earth’s surface is called the center.
The point on the surface vertically above it is known as the epicenter.
Studies by professor Andrezej Kijko from the University of Pretoria’s Natural Hazard Centre show that 90% of South Africa’s earthquakes are caused by mining.
The biggest risk by far, however, comes from mining-related earthquakes as a result of deep underground excavating, says WP Pienaar, Old Mutual insures Chief Underwriting Officer.
However, that is why Northern Cape experience earthquake because most mines are found in Northern Cape, and the reason why Northern Cape gets fewer earthquakes is because of the tectonic plates.
Where two plates connect they form an earthquake, when they run into each they form mountains.
Volcanoes are formed when pressure, temperature, and other natural forces push magma out of a magma chamber (a large, underground pool of liquid rock) until it erupts as lava on the surface of the earth or as a boiling gush under the ocean.
Professor De Kock, said that “In South Africa, the supervolcanoes of the past 2.7 billion years left us with something unique in the world after all the drama, our part of the continent was full of diamonds and platinum and multiple blankets of cooled down lava protected gold deposits from erosion.