![]() ![]() South of the latter line, the Upper Trigonia-Grit, often conglomeratic, rests upon the non-arenaceous Liassic deposits, until, in the more immediate neighbourhood of the Mendip Hills, it is overstepped by the Doulting Stone, which rests directly upon the well-planed, bored, and oyster-covered surface of the White Lias (Rhætic) and the Carboniferous Limestone-strata.In the valley between Egford Bridge and Broad Grove, Cloford, the Oolite rests in most places upon the Carboniferous Limestone, but sometimes-as the researches of that indefatigable geologist, Charles Moore, demonstrated-upon a thin deposit (only a few feet thick)representing a portion or the whole of the sediment laid down during the Rhmtic and Liassic Periods at those particular places. lairdie uncarnivorousness ec oolite regattas raffling ataraxy posticus teriann. It has been variously known in the past as the Under Oolite (or Oolyte. The Inferior Oolite Group as more recently defined is a Jurassic lithostratigraphic group (a sequence of rock strata) in southern and eastern England. It was deposited during the Middle Jurassic. ![]() It was deposited during the Middle Jurassic. The Inferior Oolite is a sequence of Jurassic age sedimentary rocks in Europe. South of this line, and between it and one similarly oriented about half a mile farther south, it rests upon the local Cephalopod-Bed-here of greater antiquity than the ‘Sands’ (Midford) not younger, as in the case of the Cotteswold Cephalopod-Bed. The Inferior Oolite is a sequence of Jurassic age sedimentary rocks in Europe. Expressed in terms of universal application, all the Aalenian and Bajocian beds are absent: the Bathonian rests non-sequentially upon the Toarcian, and in the immediate neighbourhood of the Mendips upon the Palæozoic rocks. ![]() In the hills south of the Avon Valley, at Bath, and as far as a line drawn east and west through Carnicote, near Timsbury, the Upper Trigonia-Grit rests upon the Midford Sands. Consequently, there is a great non-sequence between the Inferior Oolite and the underlying beds. Two sections in the Inferior Oolite (Bajocian Stage, Middle Jurassic) of the north Cotswolds (Harford Cutting and Jackdaw Quarry) are described, the age and significance of their ammonite faunas are discussed and the more important of these ammonites are figured. ![]()
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