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  2. Chalk stream - Wikipedia

    en.wikipedia.org/wiki/Chalk_stream

    The products of chalk weathering are dissolved in rainwater and are transported in stream flow. Chalk streams transport little suspended material (unlike most rivers), but are considered "mineral-rich" due to the dissolved calcium and carbonate ions. The surface water of chalk streams is commonly described as "gin clear".

  3. Works begin to restore rare chalk river ecosystem - AOL

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    A project starts to rejuvenate the biodiversity and wildlife in a stretch of river.

  4. River Bulbourne - Wikipedia

    en.wikipedia.org/wiki/River_Bulbourne

    The word bourne derives from the Anglo-Saxon word for a stream. [1] It is an unnavigable tributary of the River Gade, which flows into the River Colne, which in turn is a tributary of the River Thames. The Bulbourne is an example of a chalk stream, which is a watercourse that flows from chalk-fed groundwater. Chalk streams are a very rare ...

  5. Conservationists act to protect globally rare chalk stream ...

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  6. Chalk mining - Wikipedia

    en.wikipedia.org/wiki/Chalk_mining

    Chalk mining is the extraction of chalk from underground and above ground deposits by mining. [1] Mined chalk is used mostly to make cement and bricks . Chalk mining was widespread in Britain in the 19th century because of the large amount of construction underway (and the Industrial Revolution ). [ 2 ]

  7. Environmental campaigners call for chalk streams legal ... - AOL

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  8. Karst - Wikipedia

    en.wikipedia.org/wiki/Karst

    Karst is not typically well developed in chalk, because chalk is highly porous rather than dense, so the flow of groundwater is not concentrated along fractures. Karst is also most strongly developed where the water table is relatively low, such as in uplands with entrenched valleys , and where rainfall is moderate to heavy.

  9. Chalk streams - Wikipedia

    en.wikipedia.org/?title=Chalk_streams&redirect=no

    From Wikipedia, the free encyclopedia. Redirect page