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  2. Flint - Wikipedia

    en.wikipedia.org/wiki/Flint

    Flint occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones. [3] [4] Inside the nodule, flint is usually dark grey or black, green, white, or brown in colour, and has a glassy or waxy appearance. A thin, oxidised layer on the outside of the nodules is usually different in colour, typically white and rough in ...

  3. Paramoudra - Wikipedia

    en.wikipedia.org/wiki/Paramoudra

    Paramoudras, paramoudra flints, pot stones or potstones are flint nodules found mainly in parts of north-west Europe: Norfolk (United Kingdom), Ireland, Denmark, Spain and Germany. In Norfolk they are known as pot stones and can be found on the beach below Beeston Bump just outside Beeston Regis. In Ireland they are known as paramoudras.

  4. Grime's Graves - Wikipedia

    en.wikipedia.org/wiki/Grime's_Graves

    Grime's Graves is a large Neolithic flint mining complex in Norfolk, England.It lies 8 km (5.0 mi) north east from Brandon, Suffolk in the East of England.It was worked between c. 2600 and c. 2300 BCE, although production may have continued through the Bronze and Iron Ages and later, owing to the low cost of flint compared with metals.

  5. Nodule (geology) - Wikipedia

    en.wikipedia.org/wiki/Nodule_(geology)

    In geology and particularly in sedimentology, a nodule is a small, irregularly rounded knot, mass, or lump of a mineral or mineral aggregate that typically has a contrasting composition from the enclosing sediment or sedimentary rock. Examples include pyrite nodules in coal, a chert nodule in limestone, or a phosphorite nodule in marine shale.

  6. Eolith - Wikipedia

    en.wikipedia.org/wiki/Eolith

    An eolith (from Greek "eos", dawn, and "lithos", stone) is a flint nodule that appears to have been crudely knapped. Eoliths were once thought to have been artifacts, the earliest stone tools, but are now believed to be geofacts (stone fragments produced by fully natural geological processes such as glaciation).

  7. Neolithic flint mines of Spiennes - Wikipedia

    en.wikipedia.org/wiki/Neolithic_flint_mines_of...

    The nodules were extracted using flint picks. The stones were then knapped into rough-out shapes of axes, and finally polished to achieve the final state. The rough-outs were exchanged over a wide area, about 150 km (93 mi), and were often polished at their destination.

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  9. Chalk Group - Wikipedia

    en.wikipedia.org/wiki/Chalk_Group

    There are few, if any, flint nodules present. These two formations are not recognised within the northern province i.e. the outcrop north from East Anglia to Yorkshire, where the entire sequence is now referred to as the 'Ferriby Chalk Formation'. The thickness of the Grey Chalk Subgroup strata varies, averaging around 200 ft (61 m), depending ...