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St Albans soil
Part of my garden in St Albans has not much topsoil.
The subsoil is a heavy clay with plenty of flints. After a lot of digging in organic matter and picking out rocks I have a pretty good vegetable bed. I've noticed that at least one area has a lot of lumps of chalk as well. Does anyone have an idea whether these are a feature of the local soil, or perhaps plaster debris from the building of the house (30s) or something else? Leo |
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St Albans soil
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St Albans soil
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St Albans soil
In article ,
(Leo) wrote: Ian Cundell wrote in message ... In article , (Leo) wrote: Part of my garden in St Albans has not much topsoil. The subsoil is a heavy clay with plenty of flints. After a lot of digging in organic matter and picking out rocks I have a pretty good vegetable bed. I've noticed that at least one area has a lot of lumps of chalk as well. Does anyone have an idea whether these are a feature of the local soil, or perhaps plaster debris from the building of the house (30s) or something else? Leo Well the bedrock to St Albans is chalk (if you drive along Batchwood Drive you are driving down a classic chalkland dry valley). Basically the area is chalk lee slope (the scarp slop faces north at Dunstable) topped by post-glacial outwash (hence the flints). If you want to see the same without the clay topping go up to Dunstable Downs. I suppose it is possible that the construction of the house got down to the bed, but it doesn't feel very likely. Thanks for that. My house is on quite a steep slope (it's a semi but our half is more than a metre higer than the neighbor), Seymour Road or Marshalls Ave, per chance? so producing level-ish gardens would have involved quite a bit of earth moving, which probably explains it. Is there a good book or website with local geological information? Aha. That might explain it. Bizarrely Amazon throws up "Quaternary geology of the Vale of St. Albans: Field excursion guide, July, 1978" ISBN B0000EH909. But alas it is not in stock - I guess someone must have sold a used one in the marketplace at some point. Try either of the museums (Hatfield Road probably the best bet) and the library (it has a decent local studies section and the staff are pretty helpful). Might be worth asking in Ottakar's. and Google gave this http://www.hertsgeolsoc.ology.org.uk...rtsGeology.htm -- "Noah's Ark is a problem...We'll have to call it early quantum state phenomenon-- Only way to fit five-thousand species of mammal on the same boat" |
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St Albans soil
Ian Cundell wrote in message ...
In article , (Leo) wrote: Ian Cundell wrote in message ... In article , (Leo) wrote: Part of my garden in St Albans has not much topsoil. The subsoil is a heavy clay with plenty of flints. After a lot of digging in organic matter and picking out rocks I have a pretty good vegetable bed. I've noticed that at least one area has a lot of lumps of chalk as well. Does anyone have an idea whether these are a feature of the local soil, or perhaps plaster debris from the building of the house (30s) or something else? Leo Well the bedrock to St Albans is chalk (if you drive along Batchwood Drive you are driving down a classic chalkland dry valley). Basically the area is chalk lee slope (the scarp slop faces north at Dunstable) topped by post-glacial outwash (hence the flints). If you want to see the same without the clay topping go up to Dunstable Downs. I suppose it is possible that the construction of the house got down to the bed, but it doesn't feel very likely. Thanks for that. My house is on quite a steep slope (it's a semi but our half is more than a metre higer than the neighbor), Seymour Road or Marshalls Ave, per chance? no, Hordle Gardens so producing level-ish gardens would have involved quite a bit of earth moving, which probably explains it. Is there a good book or website with local geological information? Aha. That might explain it. Bizarrely Amazon throws up "Quaternary geology of the Vale of St. Albans: Field excursion guide, July, 1978" ISBN B0000EH909. But alas it is not in stock - I guess someone must have sold a used one in the marketplace at some point. Try either of the museums (Hatfield Road probably the best bet) and the library (it has a decent local studies section and the staff are pretty helpful). Might be worth asking in Ottakar's. and Google gave this http://www.hertsgeolsoc.ology.org.uk...rtsGeology.htm Thanks for those pointers, you googled more cleverly than I Leo |
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