Download Foot Steps of the Ancient Great Glacier of North America: A by Harold W. Borns Jr., Kirk Allen Maasch PDF

By Harold W. Borns Jr., Kirk Allen Maasch

John okay. DeLaski, M.D. practiced drugs within the Penobscot Bay sector of Maine and, additionally, was once a naturalist with prepared powers of commentary. His examine of the panorama resulted in the realization thick glacier had overtopped the top hills, flooded all of Penobscot Bay, prolonged some distance to the east and west and possibly used to be a part of a better continental glacier. He released those very severe box observations and inferences in several articles in neighborhood newspapers and magazines, and within the American magazine of technology in 1864. His paintings positioned him at the “team” of Benjamin Silliman, James D. Dana and Louis Agassiz as an recommend for glaciation because the local land shaping strength against that of the Biblical Deluge, an enormous clinical clash of the day either in North the USA and Europe. He remained a shadowy participant, within the heritage, yet truly contributed severe observations to the argument via own interactions with Agassiz and different popular naturalists. They included DeLaski’s observations into their very own displays, frequently with no giving him credits. John DeLaski’s precis paintings, a four hundred web page handwritten manuscript for the booklet, “The historic nice Glacier of North America”, used to be dated 1869. He died in 1874 and the e-book used to be now not released. The old importance of DeLaski’s unpublished ebook relies upon its startling contribution to 1 of the main medical questions of the day of even if the surficial geology of northern U.S. and Canada was once as a result of the activities of the Biblical Flood or by means of continental glaciation. If released, this may were the 1st e-book in this continent, a minimum of, to give a holistic dialogue of the debate within which he offered his serious observations of the surficial geology in Maine, southern New England and New Brunswick, Canada and concluded that those depositional and erosional good points needs to be of glacial foundation. DeLaski then included different proof into the ebook for glaciation stated through others from the zone in the course of a decade or , and from the mid and much west and Canada to recommend that the total area was once lined through an ice sheet that used to be not less than 5,000 toes and possibly a lot thicker over inside northern U.S. and Canada and which terminated alongside a glacial margin which prolonged from southern new England as a ways westward alongside the classes of the Ohio, and Missouri Rivers. All this was once performed whereas so much “naturalists” nonetheless recommended the Biblical Flood to give an explanation for the key elements of the surficial geology in North the United States and out of the country. DeLaski’s booklet containing his serious observations of sincerely such a lot of panorama positive aspects of glacial foundation, if released could were a pivotal record that will have strongly supported these arguing for glaciations within the glaciations vs. flood foreign argument.

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Additional resources for Foot Steps of the Ancient Great Glacier of North America: A Long Lost Document of a Revolution in 19th Century Geological Theory

Sample text

It seems that not only the trend of the hills of New England is north-south like the lakes, ponds, rivers, harbors and coves, but the ledges everywhere over the state have this trend more or less. I am quite sure that wherever we find the granitic rocks lying in horizontal beds, there the denuded surface when broken into ridges, shows them running in a direction conformably to that of the striae in the locality. If the beds have a dip to the southeast however, and the strike or principal cleavage line northeast and southwest, the ledges will run more or less in this latter direction.

Looking at the facts everywhere around me and carrying them every day with me pictured vividly on the mind, though silenced by a few word flashes from some sturdy advocate of the iceberg theory. 1 But obstinacy is by no means indicative that the possessor thereof is on the side of truth. To make ourselves, doubly sure of the truth of our opinion of a question, we ought to be familiar with every conceivable argument which our opponent might bring against us. In fact I believe we ought to entrench ourselves with his arguments and cooly, attempt to batter down our own favorite fortification with them.

Still I could not conjecture how the highest hills could have such gradual and often graceful curves towards the north, and meanwhile present bold fronts to the south. It could be readily seen that a glacier could break down the southern part of a ledge and carry the fragments away, but could such an icecap over riding a mountain, crush down its southern extremity? I cannot answer the question here, but will endeavor to do so in its proper place. I had many times both from the upper end of North Haven and the lower end of Islesboro, looked at the Camden Mountains bearing west across the channel.

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