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Updated: June 19, 2025
It consisted of sandstone marls, red, blue, green, orange, purple, white, brown, lilac, and yellow, interstratified with magnesian limestone in bands of purple, bluish-white, and mottled, with here and there shining flecks or great glares of gypsum. Among the more delicate wonders of the scene were the petrified trunks which had once been pines and cedars, but which were now flint or jasper.
The sinkers had to pass through sand, under the magnesian limestone, where vast quantities of water lay stored, and though engines were erected that pumped out 26,700 tons of water per day, yet the flood remained the conqueror. This amount seems incredible, but such is the fact. The most astonishing undertaking in mining was the Dalton le Dale Pit, nine miles from Durham.
The rocks of the Ozark region have not as yet received the necessary detailed study to enable the several lines of demarkation to be drawn with certainty. This investigation is now being carried on as rapidly as possible, and promises very satisfactory and interesting results in the near future." "The early geological reports represent the Magnesian Limestone series as made up of seven members.
Another reference to the scenery on these rivers describes it as "Wild and grand, beautiful and unique;" with "gaudy-colored bluffs." In the section on building materials he remarks: "One of the most desirable of the Missouri marbles is in the Third Magnesian Limestone on the Niangua.
This is not traceable to any considerable experience by practical farmers that inspires caution in its use, although immense quantities of magnesian limestone and lime have been used. Neither is it due to any weight of evidence against it in the experience or teachings of soil chemists and experiments. The facts of the case appear to be as follows: 1.
Serious damage may be done to the dyer by either of these classes of impurities, and I may tell you that the dissolved calcareous and magnesian impurities are the most frequent in occurrence and the most injurious. I told you that on boiling, the excess of carbonic acid holding chalk or carbonate of lime in solution as bicarbonate, is decomposed and carbonate of lime precipitated.
Certainly it contains many shells of species now living in the neighbouring ocean; and the limestone ridge running parallel with and close to the coast, and which in the colony is falsely called magnesian limestone, contains a great proportion of modern shells.
The geological formation of the range was slate, traversed by veins of quartz, its interstices being filled with magnesian limestone. Steep precipices and broken rugged gullies alternated on either side of this creek, and in its bed there were large slabs of beautiful slate. The precipices shewed the lateral formation with the rock split into the finest laminae, terminating in sharp points.
In various parts of the world, red and mottled clays and sandstones, of several distinct geological epochs, are found associated with salt, gypsum, and magnesian limestone, or with one or all of these substances. There is, therefore, in all likelihood, a general cause for such a coincidence.
I saw also some syenite and one mass which resembled andesite, but of which I likewise neglected to collect specimens. Caldcleugh, however, collected here specimens of ribboned jasper, magnesian limestone, and other minerals.
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