A Story Millennia in the Making: Conserving the Okavango River Basin | National Geographic

Key Concepts:

• Tectonic forces
• Diamonds (formation and transportation)
• Kimberlite pipes
• Bie Plateau (Source of Life)
• Okavango Delta
• Okavango Eternal Partnership
• Conservation efforts
• Water security
• Climate change impact

Diamond Formation and Kimberlite Pipes:

• Diamonds formed approximately 3.5 billion years ago deep within the Earth due to tectonic forces transforming carbon from stardust.
• Volcanic eruptions brought magma to the surface in southern Africa.
• Magma surges passed through unique underground pockets, collecting diamonds and transporting them rapidly to the surface, preventing their conversion to graphite.
• This magma cooled into kimberlite pipes, characterized by bluish-green rock.
• Out of 6,400 kimberlite pipes globally, fewer than 1,000 contained diamonds, and only about 60 are commercially viable for mining.

The Bie Plateau: Source of Life:

• Tectonic activity in Angola gradually formed the Bie Plateau, a highland region known as the "Source of Life" due to its abundant rainfall.
• The plateau's waters seep into extensive peatlands, which capture carbon and ensure a consistent freshwater supply.
• The Bie Plateau is a crucial water source for the Okavango Delta and sustains over a million people across Angola, Namibia, and Botswana.

Threats to the Okavango Delta:

• The Okavango Delta's water supply is threatened by increasing population, water diversion, commercial agriculture, and climate change.

Okavango Eternal Partnership:

• The Okavango Eternal Partnership, a collaboration between National Geographic and De Beers, aims to protect the Okavango Basin's source waters.
• The partnership supports fieldwork and research, including mapping and monitoring approximately 4,700 square miles of the Angolan Highlands.
• The goal is to secure formal protection for the Angolan Highlands, ensuring the continued prosperity of wildlife and communities in the Okavango region.
• Diamonds, originating from the same geological processes that shaped the Okavango, are now contributing to its preservation.

Synthesis/Conclusion:

The Okavango Delta's existence is the result of a unique combination of geological events and tectonic forces over millions of years. The Okavango Eternal Partnership leverages the economic value of diamonds, a product of these same forces, to fund conservation efforts aimed at protecting the Delta's vital water sources in the Angolan Highlands. This initiative seeks to mitigate the threats posed by human activities and climate change, ensuring the long-term sustainability of the Okavango ecosystem and the well-being of the communities that depend on it.