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DorsetRIGS's Snapshots

  1. Ammonite

    Snapshot Title: Ammonite
    Taken by: DorsetRIGS

    Image: Inferior Oolite erosion surface, Dorset
    Image Owner: DorsetRIGS



    Description:

    This fossil ammonite was sliced through when the erosion surface in the limestone formed. The internal chambers of the shell are visible.



  2. Cotoneaster horizontalis

    Snapshot Title: Cotoneaster horizontalis
    Taken by: DorsetRIGS

    Image: Kingbarrow Quarry Fossil Forest, Portland
    Image Owner: DorsetRIGS



    Description:

    This popular garden plant is an incredibly problematic invader in conservation sites all over Portland. It grows quickly, smothering the natural, and nationally important limestone grassland and is ve...



  3. Portland Stone

    Snapshot Title: Portland Stone
    Taken by: DorsetRIGS

    Image: Kingbarrow Quarry Fossil Forest, Portland
    Image Owner: DorsetRIGS



    Description:

    think beds of Portland limestone still in situ at Kingbarrow Quarry nature reserve. This famous building stone is still used all over the world.



  4. Purbeck limestone

    Snapshot Title: Purbeck limestone
    Taken by: DorsetRIGS

    Image: Kingbarrow Quarry Fossil Forest, Portland
    Image Owner: DorsetRIGS



    Description:

    the Purbeck limestone beds form the base of the Cretaceous stratigraphy in Dorset. On Portland they are stripped off as overburned during quarrying to allow access to the famous Portland limestone und...



  5. fossil forest

    Snapshot Title: fossil forest
    Taken by: DorsetRIGS

    Image: Kingbarrow Quarry Fossil Forest, Portland
    Image Owner: DorsetRIGS



    Description:

    these structures are part of a limestone bed known as the Fossil Forest. It appears near the base of the Purbeck Beds and marks a period of transition between a coastal forrest to a swamp environment ...



  6. ivy

    Snapshot Title: ivy
    Taken by: DorsetRIGS

    Image: Limekiln Crags Regionally Important Geological site, Abootsbury, Dorset
    Image Owner: DorsetRIGS



    Description:

    this ivy has now been cleared by members of the Dorset RIGS group.



  7. Grit stone

    Snapshot Title: Grit stone
    Taken by: DorsetRIGS

    Image: Limekiln Crags Regionally Important Geological site, Abootsbury, Dorset
    Image Owner: DorsetRIGS



    Description:

    at the top of the exposure the Eggardon Grit facies is very clear. difficult to see in the image but some grains are visible.



  8. chert beds

    Snapshot Title: chert beds
    Taken by: DorsetRIGS

    Image: Limekiln Crags Regionally Important Geological site, Abootsbury, Dorset
    Image Owner: DorsetRIGS



    Description:

    clear beds of chert here interestingly avoided by the lichen.



  9. iron rich seams

    Snapshot Title: iron rich seams
    Taken by: DorsetRIGS

    Image: Red Lane Regionally Important Geological site, Abbotsbury, Dorset
    Image Owner: DorsetRIGS



    Description:

    harder seams of sediment appear where iron content is higher



  10. Abbotsbury Iron Stone

    Snapshot Title: Abbotsbury Iron Stone
    Taken by: DorsetRIGS

    Image: Red Lane Regionally Important Geological site, Abbotsbury, Dorset
    Image Owner: DorsetRIGS



    Description:

    a good exposure of this unique deposit



  11. osmington oolite

    Snapshot Title: osmington oolite
    Taken by: DorsetRIGS

    Image: Linton Hill Regionally Important Geological Site
    Image Owner: DorsetRIGS



    Description:

    this exposue of Corallian Osmington Oolite has regionally important geological site status