BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Vol. 5, pp. 297-338, PL, 12, 13 MARCH 22, 1894 



GEOLOGY OF PARTS OF TEXAS, IXDIAX TERRITORY AXD 

 ARKANSAS ADJACENT TO RED RIVERA 



• . BY ROBERT T. HILL 



{Read before the Society December 29, 1893) 

 COXTENTS 



Page 



Comprehensive Position of the Region geologically 298 



Physiographic Features 299 



Topograpliy 299 



Drainage 300 



Forest Growth and its Relation to geologic Structure 300 



Geologic Formations and Succession 301 



Typical geologic Sections 302 



Preston Section • 303 



Trinity Sands 303 



Walnut Clays 303 



Goodland Limestone 303 



Beds of the Washita Division 30-1 



Lower Cross Timber (or Dakota) Sands 304 



Eagle Ford Shales 305 



Austin Chalk 305 



Review of the Section topographically 306 



Paris Section 307 



Ultima Thule Section 308 



Antoine Section 309 



Rockport Section 310 



Extent and topographic Expression of the Terranes 310 



Fault Systems and their Influence on Topography and areal Geology 313 



Variation of Sedimentation away from the Ouachita Shoreline 314 



Washita Division of the Comanche Series 316 



Relation to other Divisions 316 



Extent of the Washita 318 



Comparison of the Austin and Denison Sections 319 



* This is the last of a progressive series of short papers by the author on the geologj^ of the Texas 

 region, and contains his final classification of the Cretaceous formations. A list of the papers in 

 which the story as a whole is told is given on pages 3.37, 338. 



XLI— Bull, Geol. Soc. Am.. Vol. 5, 1893. (297) 



