. The Quarterly journal of the Geological Society of London. This is illustrated by vertical sections showing the position of thevolcanic series in the Carboniferous sequence of the district, and bythree reproductions of photographs. 5. In 1912, in connexion with the preparation of the second edition of the Geological Survey Memoir explanatory of Sheet 263, The Countryaround Cardiff, Dr. Strahan re-examined the exposures of the Weston-super-Mare district, and recorded certain fresh ones (pp. 26-35). 6. The rocks are described in my Geological Excursion Handbook for the Bristol district (publis
. The Quarterly journal of the Geological Society of London. This is illustrated by vertical sections showing the position of thevolcanic series in the Carboniferous sequence of the district, and bythree reproductions of photographs. 5. In 1912, in connexion with the preparation of the second edition of the Geological Survey Memoir explanatory of Sheet 263, The Countryaround Cardiff, Dr. Strahan re-examined the exposures of the Weston-super-Mare district, and recorded certain fresh ones (pp. 26-35). 6. The rocks are described in my Geological Excursion Handbook for the Bristol district (published by Arrowsmith in 1912): Excursions 8, 11,12, 13. Note.—In connexion with the investigations recorded in this paper, morethan fifty trial-holes were dug. The cost of these, as also of the chemicalanalyses, was defrayed by grants from the University-of-Bristol ColstonSociety. Unless otherwise stated, the analyses were all carried out byMr. E. G. Radley. Fig. 1.—Sketch-map of the igneous exposures in Goblin Combe,on the scale of 4 inches to the II. Field Eelations of the Kocks.(a) Goblin Combe. The existence of volcanic rocks in Goblin Combe was first provedby William Sanders, whose map, published in 1864, shows fourexposures: two small ones near the eastern end of the Combe, andtwo farther west. part 1] igneous rocks or the Bristol district. 25 No allusion to these rocks is made in the Geological SurveyMemoir on the East Somerset & Bristol Coalfield, published in1876; but two patches are shown as intrusive masses in the 1-inchGeological Survey map revised to 1873. In the account bySir Archibald Geikie and Dr. Strahan of the volcanic group in theCarboniferous Rocks_ of North Somerset1 it is suggested that thetwo outcrops may belong to the same band, and it is mentionedthat the western one was traced for some distance by means ofdebris thrown out by moles. In the 1-inch Geological Surveymap, with additions to 1899, which is at present on sale, the out-crop of the ign
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
