. First[-fourth] annual report of the Geological survey of Texas, 1889[-1892] Edwin T. Dumble, state geologist. veryfriable greensand shell marl four feet; shaly marl, with a two-inch parting ofhard glauconitic clay, two feet; altered greensand shell marl three feet. On the road from Marion to Nacogdoches, eight miles southeast of Nacog-doches, is an exposure of greensand shell marl, probably a continuation ofthe bed just described. On Aarons Hill, just west of the town of Nacogdoches, was observed thefollowing section in the cut made for the public road: A. Soil (sandy clay) . 2 feet. B. Mott
. First[-fourth] annual report of the Geological survey of Texas, 1889[-1892] Edwin T. Dumble, state geologist. veryfriable greensand shell marl four feet; shaly marl, with a two-inch parting ofhard glauconitic clay, two feet; altered greensand shell marl three feet. On the road from Marion to Nacogdoches, eight miles southeast of Nacog-doches, is an exposure of greensand shell marl, probably a continuation ofthe bed just described. On Aarons Hill, just west of the town of Nacogdoches, was observed thefollowing section in the cut made for the public road: A. Soil (sandy clay) . 2 feet. B. Mottled clay 6 feet. C. Gray sand 8 feet. D. Greensand shell marl 20 feet. E. Red clay bottom soil 2 feet. F. Greensand shell marl to bed of creek. About one-fourth of a mile north of the office of the Lubricating Oil Com-pany was seen a stratum of greensand marl in the bed of a small the marl was chopped with a hachet the red-brown oil exuded andfloated off on the surface of the water. On the hillsides adjacent are rem-nants of the iron sandstone material. 284 THE IRON ORE DISTRICT OF EAST Fig. 25. OIL BEARING GREENSAND MARL. A. Sandy soil. B. Hard greensand .... 3 to 12 inches. C. Soft greensand and trace of oil 2 feet. D. Softer greensand, with grains of glauconite containing nodules of iron sandstone and some globules of oil 3 feet. E. Softer greensand shell marl, containing a large percentage of oil 1 to 12 inches. F. Close textured glauconitic green clay with less oil 2 feet. G-. Aluminous fossiliferous greensand marl (no oil). 15 feet. In the railway cut, on the Houston East and West Texas Railway, two andone-half miles northeast of the town of Garrison, is the following section: A. Red sandy clay soil 3 feet. B. Yellow gray sandy shale eight feet to bed of road, with partingseam of iron oxide one- half inch, and projecting nodule of siliceous limestone. The dip of this section is northeast about 15°, and the beds show a slightflexure. About one hundred
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
