Transactions - North of England Institute of Mining and Mechanical Engineers Volume 7

Transactions - North of England Institute of Mining and Mechanical Engineers Volume 7

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1859 edition. Excerpt: ...They are now, I believe, past the top seam position, but have got nothing but shale yet. These borings will prove about 100 fathoms of strata. I have hitherto been of opinion that the round particles, in the specimens of magnetic ore, are oolitic shells. The President--No. I believe they are iron, with a silicious matrix. Mr. Marley--Has one of those globules ever been analysed by itself and found to be pure iron 1 The President--I do not know"; but I believe there is no, calcareous matter in those particles which there would be if it were shells. Mr. Marley--Unless it is some peculiar formation. The President--Then the shell is gone, and the iron left. Mr. Boyd--The chemical part of the shell remains in the Cleveland stone. Mr. Marley--The magnetic stone is not in analogy with the Cleveland. The President--It has changed its character from a peroxide to a protoxide. Mr. Marley--I acknowledge themagnetic stone is free from "pectens." Mr. Bewick--After hearing what ha3 been stated by our President, I am bound to say our opinions are as much opposed as ever, and I shall endeavour to shew you that the ironstone beds they have bored through at Rosedale Abbey are not the same as the magnetic ore and top bed found by the side of the valley, that, in fact, the borings have not reached those deposits by several feet, and that, therefore, they have not as yet proved anything more respecting them. The strata they have bored through are quite above them, and you will find on looking at the table of the horings, published with the July discussion, that an important member of the series, which immediately overlies the top bed, is wanting. I allude to the great sandstone rock, which is seldom under 50, and sometimes met with 100 feet thick. more

Product details

  • Paperback | 82 pages
  • 189 x 246 x 4mm | 163g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236544005
  • 9781236544001