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From Gondwana to Durbanville — How Your Soil Crossed a Supercontinent
The Cape sediments under your grow did not originate here. They came from a landmass to the north that no longer exists.
Trusswell writes: 'The Cape sediments have been derived almost exclusively from a landmass to the north.' These are described as near-shore or paralic sediments — deposited close to the ancient coastline.
And here is the remarkable part: 'A number of their features can be matched in western Gondwanaland — that is in South America and the Falkland Islands, and also even in Antarctica.'
The same rock formations, the same fossils, the same sedimentary structures — found across continents that are now separated by thousands of kilometers of ocean.
This is the legacy of Gondwana — the southern supercontinent that broke apart starting about 180 million years ago. Before the Atlantic Ocean existed, South Africa, South America, and Antarctica were connected.
The Cape Fold Belt — those NE-SW trending mountains (Cedarberg, Langeberg, Outeniqua, Swartberg) — formed during the Permo-Triassic (~250 million years ago) when the Cape rocks were compressed and folded. This folding created the topographic framework that defines Western Cape terroir today.
Fig. 62 in Trusswell shows the trends in the folded mountains — those parallel dashes running from Cape Town to Port Elizabeth represent the structural grain of the landscape.
What this means for terroir:
- Your soil's mineral signature was determined before South Africa was even a continent
- The parent material crossed an ocean of time — 440 million years from deposition to your garden
- When you grow CapeGorilla420 in Durbanville soil, you are growing in sediment that once connected Africa to Antarctica
That is terroir at geological scale.
Source: Trusswell, Chapter 6.