Surface Geology and Agricultural Conditions of the Southern Peninsula of Michigan Volume 9

Surface Geology and Agricultural Conditions of the Southern Peninsula of Michigan Volume 9

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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. 1912 edition. Excerpt: abrupt_turn to the southwest and presents even greater complexity than in the Port Huron basin. There is an outermoraine which follows the border of the plateau through Antrim, Kalkaska, Grand Traverse. and Manistee counties as far as the bend of the Manistee river in southeastern Manistee county, being throughout this distance a ridge about 1 to 2 miles in width with great relief on the inner or western border but very little relief on the outer or eastern border. From southeastern Manistee county southward across Mason county there are only weak disjointed ridges to mark the continuation of this moraine, and its identification is diflicult. It may extend only to Pentwater before passing into Lake Michigan. It seems not unlikely, however, that a ridge which is traceable as far south as Muskegon is to be included in the Port Huron morainic system. A second well defined moraine of the Port Huron system runs parallel to the outer moraine from Charlevoix county southwestward to the head of Grand Traverse Bay, being separated from it only by a narrow outwash plain, traversed in part by the Boardman river. This moraine has spurs on its inner border which entend out several miles toward the Lake Michigan coast, and especially toward Grand Traverse Bay. There seems to have been a sub lobe of the Lake Michigan glacier occupying Grand Traverse Bay which had several projections into lowlands lying between the morainic spurs just mentioned. At the south it divided into two lobes, occupied now by the two arms of Grand Traverse Bay, between which was formed the prominent ridge known locally as "the peninsula.' In the district west of Grand Traverse Bay. on the peninsula known as "the Horn, ' an interlobate moraine more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • United States
  • English
  • black & white illustrations
  • 1236992326
  • 9781236992321