On the Quartzites of Shropshire

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Abstract
Introduction: T he geology of South Shropshire, though it has received considerable attention from geologists, has been seriously misunderstood. This is owing partly to the disturbing influence of great south-west faults, partly to the obliterating influence of metamorphism, and partly to mistaken views of the causes of metamorphism. In attempting to unravel the complexities of this disturbed area, I have arrived at some definite results, the first of which I communicated to this Society in a paper entitled, “On a new Area of Upper Cambrian Rocks in South Shropshire, with a description of a new Fauna” (See vol. xxxiii. p. 652, of the Quarterly Journal of the Society). In that paper I showed that a part of the so-called Lower Caradoc rocks south of the Wrekin were of the age of the Dictyonema -shales of Malvern and Pedwardine, and that a part of the so-called “quartzite” of the Wrekin consisted of Hollybush Sandstone. I deferred discussion on the true quartzites and on the igneous rocks of the district. The latter I hope to be able to prove in a future paper are only to a slight degree disruptive, and mainly consist of a great bedded series of lavas and tuffs of Precambrian age. My second instalment of information is the announcement that the so-called Caradoc quartzites of the Wrekin and Church-Stretton area are of Cambrian or Precambrian age. In this connexion I shall notice the quartzites of the Stiper Stones, so as to include, so far as I know, all the quartzites of Shropshire.

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