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NACIS 2016
Colorado Springs, CO
J. W. Lindemann, CPG, FGSA
Maclure Quote
“The foregoing observations are the result of many
former excursions in the United States, and a knowledge
l...
Maclure 1809
Maclure 1811
Maclure 1817
Maclure 1817
“ Should this hasty and
imperfect sketch call forth
the attention of those
possessed of more talents
and industry for the ...
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The First Geologic Maps of the U.S.

NACIS 2016 Presentation
John Lindemann, Consulting Geologist
In 1809 William Maclure - one of the first American geologists - published what is arguably the first geologic map of the United States. Over the next three decades this map, little changed with the exception of its topographic base, was republished in four iterations. To the modern earth science community these maps are largely unknown. What caused these seemingly pioneer maps to slip into near obscurity?

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The First Geologic Maps of the U.S.

  1. 1. NACIS 2016 Colorado Springs, CO J. W. Lindemann, CPG, FGSA
  2. 2. Maclure Quote “The foregoing observations are the result of many former excursions in the United States, and a knowledge lately acquired by crossing the dividing line of the principal formations 15 to 20 different places, from the Hudson to Flint river; as well as from the information of intelligent men, whose situation and experience, make the nature of the place near which they live familiar to them; nor has the information that could be acquired from specimens, when the locality was accurately marked, been neglected, nor the remarks of judicious travelers.” - Maclure, 1809, p. 426
  3. 3. Maclure 1809
  4. 4. Maclure 1811
  5. 5. Maclure 1817
  6. 6. Maclure 1817
  7. 7. “ Should this hasty and imperfect sketch call forth the attention of those possessed of more talents and industry for the accurate investigation of this interesting subject, the views of the author will be fully accomplished.” Maclure, 1809, p.428 John W. Lindemann Consulting Geologist minexgeol@aol.com

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