Stockdale: Stylolites 



75 



TABLE No. 4 



Analyses of Salem Limestone (Blue) and Residual Clay of Associated 

 Stylolite-Seam, from Quarry of Consolidated Stone Company, Dark Hollow 

 District, Lawrence County, Ind. 



Constituents 



Fresh 

 Limestone 



II 



Residual 

 Clav 



III 



Percentage 

 of Loss for 



Entire 



Rock 



IV 



Percentage 

 of Each 

 Constit- 

 uent 

 Saved 



Percentage 

 of Each 

 Constit- 

 uent 

 Lost 



54.04 



0.08 



Silica (SiO.) 0.84 



Alumina (ALOs)...] 0.18 

 Ferric oxide (Fe.O.s)! 0.04 

 Ferrous oxide (FeO) 0.76 

 Ferrous carbonate 



(FeCOs) 



Lime (CaO) 



Calcium carbonate 



(CaCOs) 



Magnesia (MgO)... 

 Magnesium carbo- 

 nate (MgCOs) . . . 

 Potash (KoO). . . .\ 



Soda (Xa^O) / 



Total silicates and 

 oxides not com- 

 bined with COo. 

 Carbon dioxide 



(CO.) 



Volatile and com- 

 bustible matter, 

 less COo 0.60 



0.15 



42. 7( 



Total, 



* Alumina taken as constant. 



29.64 

 7.16 

 8.22 

 0.84 



0.10 

 0.00 



0.56 



88.30 ! 11.70 

 100.00* I 0.00 



28.30 I 71.70 



14.80 



51.40 



6.80 



96.50 



0.44 



o.o: 



13.80 



0.17 



3.58 



0.06 59.60 



1.63 



49.44 



12.10 



39.72 



10 



0.60 19.14 19.14 0.12 79.80 j 20.20 



99.45 99.45i95.92 i 91.50 



Colimm I. Fresh Salem limestone (blue variety). 



II. Black residual clay of stylolite-seam associated with I, 

 Analyses by Kenneth W. Ray, Indiana University, 1921. 

 Columns III, IV, V calculated by the writer. 



