Leeds Geological Association. Transactions, Part 4Leeds Geological Association., 1889 - Geology |
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Adamson ascended bank basin Batley beautiful beds boulders Bridge BROWNRIDGE Burnsall C. D. HARDCASTLE Calverley chalk character Cheetham clay Council Crag cutting denudation deposited district escarpment examined exhibited fault feet field excursions flint formed fossils fuel geologists Geyser Gill gritstone Headingley Hill Holgate Hudleston Hunslet Ilkley interesting J. E. BEDFORD James Bedford kindly lava Leader Leeds LEEDS GEOLOGICAL ASSOCIATION Leyburn Littondale magnesian limestone Market Weighton marl Meanwood Messrs Middleton miles Millstone Grit Millstone Grit series mountain Municipal Buildings natural gas Nidd Nidd Bridge observed obtained outcrop party passing pebbles Permian petroleum pleasant Plompton present President Professor Green quarry quartz railway Ridge river Road rough rock Saddleworth sandstones scenery seen shales showed side Silurian Skipton South Cave specimens splendid Station steam stone strata summit surface Terrace thickness travelled tunnel Upper valley valuable volcanic Watts weather whilst Woodhouse Yoredale Yorkshire
Popular passages
Page 195 - His hypothesis is that water finds its way below the crust of the earth, and then meets with carbides of metals, particularly of iron, in a glowing state. The water is decomposed into its constituent gases ; the oxygen unites with the iron, while the hydrogen takes up the carbon, and ascends to a higher region, where part of it is condensed into mineral oil, and part remains as natural gas, to escape where it can find an outlet, or to remain stored at great pressure until a bore-hole is put down...
Page 189 - After the close of the lecture a number of questions were asked, and the audience then inspected the rock sections which the Professor had brought with him for examination under the microscope.
Page 197 - ... shall have become better incorporated than at present with the language of our common literature, a similar acquaintance with the stony science will be found scarce less necessary to the writer who describes natural scenery. Geology forms the true anatomy, the genuine osteology of landscape ; and a correct representation of the geological skeleton of a locality will be yet regarded, I doubt not, as the true mode of imparting adequate ideas of its characteristic outlines.
Page 219 - Then a bed of sandstone, quarried for road material at Great Nab End, encircling the lower flank of Pule Hill. The steep slopes of the hill are formed of the first shale series, containing a coal seam half a foot thick, formerly worked by tunnelling.
Page 208 - ... Fell Conglomerate, etc.) are deposited across the denuded edges of all the older formations ; at one place they lie upon Upper Silurian, at another upon rocks of the Volcanic Series, and at yet another upon the Skiddaw Slates, Thus there cannot be the shadow of a doubt as to the length of time which must have elapsed between the close of the Upper Silurian and the commencement of the Carboniferous Period, and of the greatness of the work accomplished in that time. It is to the earlier part of...
Page 197 - I don't consider going by rail to be travelling at all. It is merely being sent to a place — very little different to becoming a parcel.
Page 207 - ... long-continued volcanic activity. B. — Volcanic Period. The rocks deposited in the present area of the Lake District during the period coming between that of the Skiddaw Slates and that of the Upper Silurian are almost exclusively of Volcanic origin. They may represent a total thickness of about 12,000 feet. At the base of the volcanic series only are there intermixtures with rocks of an ordinary sedimentary character ; here, where the junction beds are exposed, occur alternations of Skiddaw...