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AYMESTRY LIMESTONE

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Originally appearing in Volume V03, Page 74 of the 1911 Encyclopedia Britannica.
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AYMESTRY See also:

LIMESTONE , an inconstant limestone which occurs locally in the See also:Ludlow See also:series of See also:Silurian rocks, between the Upper and See also:Lower Ludlow shales. It derives its name from Aymestry in See also:Herefordshire, where it may be seen on both sides of the See also:river Lugg. It is well See also:developed in the neighbourhood of Ludlow (it is sometimes called the Ludlow limestone) and occupies a similar position in the Ludlow shales at Woolhope, the Abberley Hills, May See also:Hill and the See also:Malvern Hills. In litho-. logical See also:character it varies greatly; in one See also:place it is a dark See also:grey, somewhat crystalline limestone, elsewhere it passes into a flaggy, earthy or shaly See also:condition, or even into a See also:mere layer of nodules. When well developed it may reach 50 ft. in thickness in beds of from r to 5 ft.; in this, condition it naturally forms a conspicuous feature in the landscape because it stands out by its See also:superior hardness from the soft shales above and below. The most See also:common fossil is Pentamerus Knightii, which is extremely abundant in places. Other brachiopods, See also:corals and See also:trilobites are See also:present, and are similar to those found in the See also:Wenlock limestone.

End of Article: AYMESTRY LIMESTONE

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