Quote:
Originally Posted by MolsonExport
Isn't most of London underlaid with clay? Certainly the areas around my last two houses were.
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Northwest London and a large part of the southern half of London are clay till. However, almost the entirety of northeast London and everything near the Thames or a creek tributary consists of glaciofluvial and more contemporary fluvial deposits, in addition to concentrated sand and silt pockets all across the city, which are a lot more unpredictable for construction.
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