Museum Bulletin Volume 150-156

Museum Bulletin Volume 150-156

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: ...lower Little Falls dolomite (containing chert) faulted against upper dolomite. Fault breccia is here shown and the throw of the fault must be something over one hundred feet. A mile farther northwestward the dolomite comes against the Grenville so that here the upthrow side is on the west with an amount of throw probably in the neighborhood of two hundred feet. Just after crossing the Roberts creek fault the relation is again changed and the upthrow is on the east because of the wedge of Black River-Trenton on the west side. Where the fault crosses Jackson creek the relation changes again so that the upthrow side is on the west. This is shown by the small area of the Theresa formation. From here northward the upthrow continues on the west. Where the fault nnZ-?, anberry crk the strata are disturbed and good exseen T.f C, hCrty bc, s of t, le lower Little Falls dolomite are on the upthrow side. From a point about a mile north of Cranberry Creek village the fault is clearly traceable as a topographic feature and by frequent outcrops of fault breccia. On the west side of Bunker hill a small mass of Trenton limestone is faulted against lower (cherty) beds of the dolomite so that the amount of displacement is here approximately represented by the thickness of the dolomite formation or about two hundred feet. NORTHVILLE FAULT This fault passes through the depression just east of the village of Northville. Its strike is nearly north and south and the upthrow side is clearly on the east. The relations are well shown at only one point and this is along the creek at the southeastern edge of the village. Here are exposed about twenty-five feet of horizontal, cherty Little Falls beds, the rocks being considerably broken or brecciated. Within two
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Product details

  • Paperback | 170 pages
  • 189 x 246 x 9mm | 313g
  • United States
  • English
  • black & white illustrations
  • 1236850068
  • 9781236850065