586 COAL MEASURES OF MARYLA>'Jj 



coal^ Camhri-dge red heds, coal, Meyersdale red beds, Buffalo sandston-:'. 

 Brush Creek limestone and fauna. Brush Creek coal. 



The interYal between the Ames and Brush Creek limestone is 230 

 feet. 



The Cambridge limestone and fauna were not observed by the authors 

 at Treepo?t, but are reported in the proper position in the vicinity by 

 1. C. White.^' 



The section is in full agreement with those already described. The 

 average interval between the Brush Creek hmestone and Upper Freeport 

 coal is 115 feet (120 feet at Freeport). 



LatTobe. Pennsylvania. Eaymond^^ and Campbell^^ describe excellent 

 sections in the vicinity of Latrobe which embrace the following : 



Ames limestone and fauna, Harlem coal, Pittshurgh red ieds, Salts- 

 hurg sandstone, Albright limestone, Buffalo sandstone. Brush Creek 

 limestone and fauna. Brush Creek coal. 



The thickness is 229 feet, which may be compared with the thickness 

 of 230 feet at Freeport. The' section agTees in its cliief elements with 

 that at Freeport. 



Somerset County. Pennsylvania. »The section at this place is based 

 upon the work of Dr. G. B. Piichardson, who has not only given the 

 author his interpretations of the section, but has most generously fur- 

 nished him with valuable diamond-drill records. It presents the fol- 

 lowing sequence: 



Ames limestone and fauna, Harlem coai, [Ewing^ limestone, Pitts- 

 burgh red shale, Saltsburg sandstone, Cambridge limestone and fauna, 

 coal, Meyersdale red beds, Buffalo sandstone, Brush Creek limestone and 

 fauna. Brush Creek coal. , 



The thickness is 261 feet. The interval from the Brush Creek coal 

 to the Upper Freeport coal is 135 feet. This section is in full accord 

 with the preceding. 



Somerset County immediately adjoins the State of ^laryland on the 

 north. 



Castleman basin, Pennsylvania-Maryland. This basin lies both in 

 Somerset County, Pennsylvania, and in Garrett County. Maryland, tlrjs 

 connecting the exposures of the two States. It is distant but 15 miles 

 from the Somerset section studied by Eichardson. The following se- 

 quence was observed -^ near Meyersdale, Pennsylvania, and Grantsville, 

 ^larvland : 



1' I. C. White : Second Geol. Survey ra... vol. Q. ISTS, p. 24. 

 1- Ann. Carnegie Mus.. vol. 5. 190S-1909. p. 166 et seq. 

 ^^ Latrobe Folio. F. S. Geol. Survey.. No. 110. 

 =» Bv Swartz and Price. 



