. Geology and agriculture. Ill] Special Report No. i : Natchitoches Area 145 township, sands and clays of this stage are often exposed in theimmediate vicinities of springs and rivulets. Limestone boulders are abundant in the ravine west of CampSalubrity. They are like those on the Kircha road in the portion of the township. This is most decidedly a region of springs. They are cooland of a good quality of water, though often various attributes are due to the stratigraphy and topog-raphy of the region. The uplands are very sandy, occasionallyferruginous. They absorb large


. Geology and agriculture. Ill] Special Report No. i : Natchitoches Area 145 township, sands and clays of this stage are often exposed in theimmediate vicinities of springs and rivulets. Limestone boulders are abundant in the ravine west of CampSalubrity. They are like those on the Kircha road in the portion of the township. This is most decidedly a region of springs. They are cooland of a good quality of water, though often various attributes are due to the stratigraphy and topog-raphy of the region. The uplands are very sandy, occasionallyferruginous. They absorb large amount of rain water. Thisleaches through the sandy layers until it strikes impervious clays,and then is forced laterally by hydrostatic pressure and gravityto the surface. The good character of the spring waters of this region isproof of the absence of any considerable marly material here inthis series. Lower Claibor?ie.—The town of Natchitoches is located ondeposits of this age as is shown by the section at the base of


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1892