"Post-Triassic folding and faulting in the Wirral peninsula appear to have their origin in the Miocene period. The general trends are north-to-south and east-to-west, except where they have been modified by proximity to the older rocks of the southwest. These folds are considered as ripples from the Miocene earth storm of southern England, and are shown to be quite separate from older structures. Two cracked anticlines are described, which bring confirmatory evidence of the independence of post-Triassic and earlier folding."

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