Greetings!
The drive from the Ugab Terrace Lodge to the Halali Camp Resort on the
western edge of Etosha National Park was called by one of our travelers “the
most boring of our drives”. He
likened it to one of the endless expanses of the province of New South Wales in
Australia.
Except for the Himba
village we visited,
and the thousands of springbok, zebras, and elephants, it
was uneventful.
The Colliseum of Continental Crash and the SuperBowl of
Subduction.
The world’s continents began about a billion years ago when
three giant upper mantle pockets of magma pushed enough lava through the
earth’s crust to create land plates over a several thousand miles across. They were the South American plate,
Congo plate, and the Kalahari plate.
They were located near the South Pole, were separated by hundreds of
miles of ocean sea floor, and the whole thing was called Rodinia.
About 500 million years later, the Kalahari plate started
moving toward the Congo plate, and the South American plate moved toward
both. They all met at the point
where we are standing, the Ugab River Valley. In the collision, the Kalahari plate was forced down under
the Congo plate, bending and folding great sections of the sea floor, which can
be seen throughout the Damara mountain region. They look like very wavy multi-layered ribbons of rock
topping granite slabs of mountain.
The resulting super-continent was called Gondwana, and it was the
world’s first mountain building experience. For almost a half-billion years, rock and roll was the tune
on these table tops for as far as you could see.
Four hundred million years later, it all broke up. After erosion and glaciers lowered and
flattened the mountains, a deep ocean split in the earth (Mid-Atlantic Ridge)
heightened by the entire continent passing over the South Pole and heading
north deposited South America, Australia, India, and the Antarctic half way
around the world to their present locations.
As we drive across five hundred miles of otherwise boring
territory, it’s what happened here over the past billion years that should
cause us to gasp in amazement. Too
bad it isn’t very photogenic.
To see all of the photos we took today, click on Friday, August 1st, Halali Resort, Etosha National Park, Namibia.
To see all of the photos we took today, click on Friday, August 1st, Halali Resort, Etosha National Park, Namibia.
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