Report of Progress Volume 1879

Report of Progress Volume 1879

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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. 1876 edition. Excerpt: ...oxide of iron occurs in detached flakes here, and also small quantities of magnetic ore. 8,200 6,580 7,000. There There That there is an overturned anticlinal at I is evident, may be another at m between the dips 88 and 36 seems to be one also at n, between the dips 74 and 56, and there may be others. There is almost certainly here exposed, a thickness of 4,000 feet of slates, between "Wilton's run and Cline's run. The first one-third of a mile of the measures above described, consists of argillites and hydro-mica slates; the rest belong rather to the class of compact chlorite slates. If the section be rightly constructed, the chlorite slates on the south overlie the argillites and hydro-mica slates to the north of them. The southern limit of the chlorite slate mas.s is at a fault, which lets down against it the calcareous slates and limestones of the belt next to be described. This supposed fault crosses the river at a point 1,400 feet above (north of) Cline's run. A third limestone belt is now crossed by the section along a line of nearly two and a half miles (12,060 feet), to which must be added 1,000 feet, more or less, destitute of exposures, at its southern end. Calcareous slates are first seen at o (1,400 feet north of Cline's ran), dipping south 20 east--50. In the next 650 feet, are seen rapid and confusing changes of direction and intensity of dip, suggesting the idea of a general disturbance in the neighborhood of the fault, or contact plane between this belt and that last described: south 20 east--60; north 5 east--60;--south 25 east--30; south 20 east--88; north 20 west--44; vertical; and south 70 west--2o; the strata being much convoluted. Possibly cleavage. t Almost certainly cleavage. J For the purpose of assisting the...show more

Product details

  • Paperback | 52 pages
  • 189 x 246 x 3mm | 109g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236595130
  • 9781236595133