150 



GEOLOGICAL REPORT. 



[1237 



Adams, on the Mississippi River, where for several miles down the river, out- 

 crops of soft sandy materials interstratified with ledges of rough variegated 

 sandstone, are to he seen ; but here, as elsewhere, notwithstanding the good 

 opportunity afforded for examination, I have been nn ab'.c to delect even a trace 

 of fossils. — The Block-house lid), at Fort Adams, affords the following section : 



(Sec. 34.) 

 SECTION AT LOFTUS' HEIGHTS, FORT ADAMS, WILKINSON CO. 



The sandstone of stratum No 1, besides being of unequal hardness within its 

 mass, is interstratified, at from to 15 feet, with softer, sandy strata, which 

 often wash away so as to cause the ledges of rock to turn! le down. 



Suidstone of better quality occurs in N. E. Wilkinson, on the waters of 

 Buffalo River, and on Homochitto. Near Mealville sandstone cr"ps out in 

 several localities on the Homochitto, interstratified with gray clay, and with all 

 degrees of tnnsition fh)m clay to sandstone, as well as, in one and the same 

 block, from the Fort Adam-; rock to that of Grindstone Ford. Such is the case 

 at a bluff on Judge Cassedy's land, S. 32, T. 6, R. 5 E., where about 20 feet of 

 these materials are exhibited; about a mile lower down, according to Judge 

 Ctssedy, a deposit of lignite underlies these strati, in the bed of the river. 

 On a hilltop about y z mile due S of the outcrop mentioned, there occurs a 

 singular deposit of orange-colored cilcareous clay, a special dlscription of which 

 is given further on (Tl'296) A few miles W. of this point, there is a quarry of 

 rock very similar to that of Dixon's quarry and Grin Istone Ford, and S. of ifc 

 we find, for several miles, gray clays appearing on the hillsides. 



257. Willi thi» development of the fonnition in Amite county, I. am not 

 aquainte 1. In W. Pike county, 1 have seen it only at the N. end of Magee'a 

 cut on the N\ (), J & G. N. R R . S of BogueChitto Stat : on, where a stratum of 

 gray laminitel clay interstratified with smd. appears, 15 feet 'hick at first, but 

 disippearing with a southward dip. At Holmesville, wells of a gre ter depth 

 than 20 to 25 feet strike blue or black fetid clays, in which lignitzed trunks, 

 and oth;r vegetable remains are said to be found. In E. Pdtc countv, "blue 

 dirt" is frequently struck in wells— thusat 5 to 10 feat on S. 24. T. 3, R. 11 E. 

 (Mr. Cmerly's). Further K we find a doe:> blue, meagre eliy cropping out on 

 the banks of Pearl River, at Pope's Ferry, below Columbia, Marion county. The 



