Really interesting post.
Fig1. Last active between 160 – 145 million years ago, the Zuidwalvulkaan is showing signs of unrest. Its location just off the Dutch coast is a cause for grave concern (www.npowetenschap.nl)
The Sûdwalvulkaan (Zuidwalvulkaan) has been sitting dormant at 2 km under the Waddenzee (Frisian Sea) in the north of the Netherlands for some 150 million years. In 1970, Elf-Petroland discovered the volcano when looking for natural gas in the Waddenzee. While drilling, for which they only received a permit in 1988, they found an anomalous temperature at lower depth and anomalous variations in magnetism. And then they also hit on volcanic rock. The dormant giant’s presence is one of the reasons the north of the Netherlands has natural gas, and just as important, huge salt caverns.
Nowadays, the gas platform ‘Zuidwal’ sits on top of the volcano and extracts gas, which is directly transported via a pipeline to Harlingen…
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