"About 20 million years ago: Madeira comes into being
As a consequence of intensive tectonic activity and volcanic eruptions under the sea, there is a piling-up of lava material in the Atlantic Ocean during the Mesozoic period (about 5-25 million years ago).
The seabed rises to as much as 400 m above its original level. Several million years later the final volcanos become extinct and plants and trees begin to grow on the fertile layer of lava.” (pg. 31)
“AA . Baedeker - Madeira ” (2000) Automobile Association Developments Limited, Hampshire: AA Publishing
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