Geological Survey of Michigan Volume 7, Pts. 1-3

Geological Survey of Michigan Volume 7, Pts. 1-3

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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. 1900 edition. Excerpt: ...exactly with reference to the Saginaw, Tuscola and Huron R. R. Down near Popple we find a number of hills, which appear to have protruded above water, and the bench marks of the first beach are scored upon their flanks.f Thence the Upper Forest Beach can be traced through Sees. 11, 14 and 13, Grant, down to another sound, a remnant of which is Mud Lake. It reappears again on Sees. 28, 29 and 31, where the moraine once more was above lake level, and where it is at an altitude, as previously stated, of about 744 feet above tide. Xorth of Badaxe, running from the southwest corner of Sec. 7, Verona, through Sees. 8. 9 and 10 to 11 is a low clay ridge, heavily aproned with gravel on the south side, which rises a little above the Forest Beach level, and seems to mark the line of the ice front at one stage in the time of the Forest Beach. This seems to be practically the same moraine which passes north and west of Popple and northwest of Mud Lake. At the beginning of the time of the Upper Forest Beach this moraine was probably largely under water and kame gravels were extensively formed in a broad shallow sound which faced it and was later resolved into a series of lakes (indicated by shell marls under, the present swamp) of which Mud Lake is the only surviving representative. By the end of this time the connection between the two sides of the "Thumb" was so open that the water level was practically identical in both, as is shown by the fact that the gravels at the foot of the ridge north of Mud Lake are at practically the same height on each side. Hence the retirement from this ridge, the last place in the county where the ice front kept above the water, made no material difference in the lake level. I was at one time inclined to think more

Product details

  • Paperback | 252 pages
  • 189 x 246 x 13mm | 458g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123649735X
  • 9781236497352