REPORT OX FIELD WORK IX GEOLOGY. 12 1 



provided its t^^eographic limits are approximately parallel with those 

 of th^ lola and Oswego systems, which have been traced. We wdl 

 therefore provisionally pronounce the Crarnett and Burlington lime- 

 stones identical. 



The elevation at Colony is a little greater than at Welda, so that 

 one can scarcely understand why the limestone does not contine south- 

 ward to that point. The explanation evidently is that it has recently 

 been removed by erosion. The sharp angle in the surface line at 

 Colony anil the steep decline to Carl\le strongly indicate that during 

 the greater part of the period of surface configuration there was a 

 protecting cap rock reaching from Welda to Colony, at which point 

 it ended abruptly. 



At Ottawa the Garnett limestone is found in the bed of the Osage 

 river about 35 feet vertically below the road bed. North of the river 

 another system is found which is relatively extensi\e. It may be seen 

 by the roadside on the east side of the tracks within the yard limits, 

 but it soon becomes covered to the north and east. The Ottawa 

 stone quarries are located in this limestone system, which will be 

 called the Ottaitui limestone. It seems quite probable this is the same 

 limestone found at Eudora, and in the Kansas river at Lawrence. 



Passing north from Ottawa towards Lawrence no limestone was 

 identified until the vicinity of Haskell Institute was reached. Here 

 a thin stratum of about two feet was found, as shown in the drawing. 

 The same stratum has been observed on the brow of the hill at 

 the southeast corner of Oak Hill cemetery at Lawrence, and 

 also on the south side of the Wakarusa. In both of these places it 

 immediately overlies a bed of sandstone of unknown thickness. This 

 somewhat indicates that the limestone in the Kansas river at the south 

 end of the dam at Lawrence is the same; for it is about three feet in 

 thickness and is said to rest directly on sandstone. The limestone 

 and sandstone are both worn away on the north side of the river at 

 this point. Up the river less than half a mile, near the pumping 

 station, sandstone was reached on both sides of the stream, but no 

 limestone is above it. 



We cannot assume that this river limestone is the same as the 

 Haskell Institute and cemetery limestone without admitting that from 

 a point almost opposite the Institute the rock dips to the north fully 

 fifty feet to the mile, or that it has been faulted. On account of 

 this great difficulty the river limestone is assumed to be the equivalent 

 of the Ottawa limestone in the drawing, which at present seems the 

 most reasonable. Small faults, however, are known to have occurred 

 in this vicinity. On the farm of Mr. Bowman, of Sibley, a 14-incii 

 vein of coal was found at the depth of 19 feet. It was followed for a 



