Whenever you consider volcanoes, South Africa most likely isn’t the primary place that involves thoughts.
Picture for illustrative functions / Gary Saldana / Unsplash
We image molten lava spilling down Hawaiian cliffs or ash clouds rising above Iceland, not safari drives or the Karoo’s open plains. But beneath South Africa’s calm exterior lies a fiery story written over billions of years.
Whereas there aren’t any lively volcanoes on the mainland, the nation’s territory does embody one residing, respiration big on a faraway island. The remainder? Lengthy lifeless, however nonetheless forsaking dramatic landscapes and geological marvels.
Right here’s a have a look at South Africa’s lively, dormant, and extinct volcanoes and why they’re price realizing about.
Mascarin Peak, Marion Island
South Africa’s sole lively volcano sits removed from the mainland, within the icy waters of the southern Indian Ocean. Welcome to Marion Island, a part of the Prince Edward Islands, about 1 920 km southeast of Cape City.
At its centre rises Mascarin Peak, an enormous protect volcano that has erupted a number of instances within the final 10,000 years—the latest in 2004. In the event you have been standing on the island again then, you might need seen glowing lava flows snaking throughout black volcanic rock.
Right this moment, Marion Island is dwelling to seabirds, seals, and a small South African analysis base. Few vacationers ever get there, nevertheless it holds the title of South Africa’s solely at present lively volcano.
Do you know? Marion Island is nicknamed the “fireplace and ice island” as a result of it combines sub-Antarctic chilly with scorching, molten geology.
Pilanesberg – The Billion-12 months-Previous Extinct Supervolcano
Within the North West Province, you’ll discover a ring of mountains enclosing Pilanesberg Nationwide Park. Whereas guests come for elephants, lions, and rhinos, the park itself sits contained in the eroded stays of a as soon as big volcano.
About 1.2 billion years in the past, the Pilanesberg volcano might have stood taller than Mount Everest. Over time, it collapsed and eroded, forsaking the round ridges you see right now.
Do you know? Pilanesberg is so geologically distinctive that geologists name it an “alkaline ring advanced” and there are solely a handful prefer it on this planet.
Standing: Extinct. Pilanesberg’s magma chamber cooled way back, however its legacy is written into the panorama.
Salpeterkop, Northern Cape
Close to the stargazing city of Sutherland, within the Northern Cape, lies Salpeterkop, an extinct volcano that erupted round 66 million years in the past—the identical time the dinosaurs disappeared.
In contrast to Pilanesberg, which has been eroded nearly flat, Salpeterkop nonetheless resembles a volcanic cone. You possibly can see tuff rings, crater-like buildings, and hardened lava flows. For geology fans, it’s one of many clearest home windows into South Africa’s fiery previous.
Do you know? Locals generally name it “South Africa’s sleeping volcano”—however don’t fear, it’s fully extinct.
Dormant volcanoes
South Africa has no dormant volcanoes. In contrast to Mount Kilimanjaro or Mount Fuji, which may erupt once more, South Africa’s mainland volcanoes are just too historic. Their underground programs cooled thousands and thousands to billions of years in the past, making them completely extinct.
The one volcano that would match the “dormant” label is Marion Island, which cycles by durations of exercise and relaxation. However because it erupted simply twenty years in the past, scientists classify it as lively slightly than dormant.
Landscapes solid by fireplace
Even with out fiery eruptions right now, South Africa’s volcanic previous is all over the place if you realize the place to look.
The Drakensberg Mountains are partly fashioned from huge lava flows laid down 180 million years in the past when Gondwana started to separate aside.
Huge areas of the Karoo are coated in historic volcanic rock often known as the Karoo basalts.
Fertile soils in lots of areas owe their richness to weathered volcanic deposits.
Do you know? In the event you’ve ever admired the Drakensberg’s dramatic cliffs, you’ve been historic lava frozen in time.
So subsequent time you go on safari in Pilanesberg or stargaze close to Sutherland, keep in mind: you’re strolling on the bones of historic volcanoes, lengthy lifeless however nonetheless shaping the land beneath your toes.
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