There’s a New (Geology) Monograph!

By | September 22, 2022

Title: Charles-Alexandre Lesueur in Missouri: 1826

By Walter A. Schroeder, June 2003


A Geological Summary of the Journal of the Voyage of Charles-Alexandre Lesueur from Harmony, Indiana to Southern Missouri in 1826. The area traversed by Lesueur on his trip to Missouri in 1826 included the geologic extremes of the Mississippi Embayment, a deep structural basin still experiencing major earthquakes, and the Ozark structural dome where some of the oldest rocks of the United States are exposed. The Ozark dome, the goal of Lesueur’s journey, is one of the richest metalliferous regions of the United States.

Abundant Karst Landscapes – As carbonate rocks, both limestones and dolomites are soluble. The extremely long, continuous period of subaerial erosion since the close of the Paleozoic Era has permitted huge underground voids to be created. The Ordovician formations are associated with extensive karst landscapes. Though Lesueur did not pass by any major cave, he noted a natural bridge (42 127 recto and dessins 42 034 en bas and 42 035), streams that disappeared underground (42 124 verso: ravins dont plusieurs se perdent sous terre), and several sinkholes (42 124 recto: plusieurs trous infundihuliformes). (More about Missouri’s Karst Topography)

By Walter A. Schroeder, June 2003
Walter A. Schroeder’s Map

Notes: There’s still a little bit of work to be done on this monograph. My next steps are to clean up the French language; there are missing diacriticals – And then I’ll put more explanatory graphics and text in to demystify the geological stuff, for those of us that aren’t professional geologists because we need to understand the importance of what is being discussed by the author and how it relates to this area. Because thousands of Cherokee were to pass through this area just eleven years later. I am also desperately trying to find the text of the original Charles-Alexandre Lesueur journal.  If you have a link to the journal please share it with me at

3D Diorama Along the Trail of Tears

By William Ambrose

On the western side of the state of Missouri, the Trail of Tears is generally the Springfield to St. Louis Road.  The General Land Office (GLO) surveyors, those earliest government surveyors who surveyed the unsettled frontier lands ahead of any land sales, were required to draw the existing roads on the township plats beginning at about the time they surveyed the western half of Missouri.  The Springfield to St. Louis Road was pre-historic – it was a trace on the ground from Springfield to St. Louis used by Native Americans for travel for trade and hunting long before Americans arrived in the state.  The GLOs were the building blocks of President Jefferson’s rectilinear survey system, known as the Public Land Survey System, created by the Land Ordinance of 1785, a federal law. The system was laid out in 6-mile-by-6-mile squares, each square being known by its north-south “Township” number and its east-west “Range” number. 


By William Ambrose

From 1837 to 1839, the Federal Government forcibly removed 17,000 Cherokees from their centuries-old homelands in Georgia, Tennessee, North and South Carolina, and Alabama.  The Cherokee families were rounded up at gunpoint by Federal troops, held prisoner in detention camps, divided up into detachments of about 1000 people, and then forced to walk the 1000 miles to “Indian Territory,” now Oklahoma. Approximately 4000 died during that process. 

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