47:(205 million years ago) onwards. Its uplift has more or less kept pace with the deposition so that on the north and south sides of it, each stratum thins to nothing and in most cases, picks up again on the other side.
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affected the weaker rocks between them so influencing the geography at the surface. Features in the intervening district were the
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is retained. 'Block' seems to be the most modern version but the most distinctive and widely known is 'axis'.
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which has progressed during the period of deposition of the newer rocks from at least the end of the
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Rifle Butts Quarry Site of
Special Scientific Interest and Nature Reserve, exposed geology
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