GEOLOGICAL SURVEY OF TEXAS- 



FIRST ANNUAL REPORT, 1889. PLATE III. 



Progress 



System (Period). 



Series (Epoch). 



QUATERNARY. 





TERTIARY. 







Ul'I'KH. OB Bl.ACK PliAIUI 



CRETACEOUS. 







LOWER, OB Comanche. 



JURA-TRIAS. 





PERMIAN. 





CARBONIFEROUS. 



Coai. Mbasukes. 





Lower Carboniferous? 



DEVONIAN. 





UPPER SILURIAN? 







San Saba. 



SILURIAN. 







Leon. 



f 



Katemoy. 



CAM lilt] AN. i 



Riley. 



I 



Hickory. 



TEXAN. | 



Packsaddle. 



Ll,ANO. 



Mason. 



f 



Click. 



FERNANDAN. 



Iron Mountain. 





Valley Spring. 



BURNETAN. i 



Bodeville. 

 Long Mountain. 

 Lone Grove. 



TABLE OF FORMATIONS. 



Ta ble showing the geologic formation found in Texas and their probable correlations, as determined 



Division (Age). 



Coast Clays. 



Fayette (Blanco Canyon ?). 

 Timber Belt, or Sabine River. 

 Basal Clays. 



Glaucomhc. 

 Ponderosa Marls. 

 Austin Chalk. 

 Eagle Ford Shales. 

 Lower Cross Timber 



Washita. 



Fredericksburg. 



Trinity. 



Double Mountain. 

 Clear Fork. 

 Wichita. 



Coleman- Albany. 

 Waldrip- Cisco. 

 Brownwood- Canyon. 

 Milburn-Strawn. 

 Richland- Gordon. 



Deep Creek. 



Wyo. 



Potsdam Limestone. 

 Potsdam Flags. 

 Potsdam Sandstone. 



January 1, 1890. 



Sands, Clays, and Lignites 



Sands, Clays, Greensands, and Lign 



Clays. 



Glauconite Sands. 



Clays. 



Chalk and Limestone 



Clays. 



Sands. 



Sandstone and Conglomerate. 



Clays, Sandstone, Gypsum. 

 Limestone, Clay, Sand, and Gypsum. 

 Clays, Sands, and Shales. 



Clays, Sands. 



Limestone, Clays, Sands, Coal. 



Clays, Coal, Limestone. 

 Sandstone. 

 Limestone and Shale. 



Dolomites and Chert. 

 Dolomites, etc. 



Burnet Marble. 



Brown Dolomites. 



Siliceous Magnesian limestones. 



Sandy Shaly Dolomites. 



Limestone and Calcareous Conglomerate. 



Shales. 



White and red Sandstone. 



Chocolate Limestone. 



Calcareous Sandstone. 



Sandy Shales. 



Massive Sandstone. 



Coarse Conglomerate. 



Marbles and Shaly Beds. 



Quartzites and Sandstone, with Eruptives 



Sandy Shales and Schists. 



Calcareous Rock. 

 Chloritic slates and shales. 

 Carbonaceous Schists. 

 Ferruginous Beds. 

 Quartzite. 

 Acidic Schist. 

 Basic Schist. 



Mica and Chlorite Schist. 

 Hornblende and Py«» eue Schist. 

 Granite, Gneiss, etc. 



Fox Hill. 



Pierre. 



Niobrara. 



Bi/rdseye, etc. 



Chazy. 



Middle Canadian. 



Lower Canadian. 



Miocene. 

 Eocene 



Upper Cretaceous. 



Lower Cretaceous. 



Coal : 



subcarboniferous. 



NlAGARAN. 



Trenton. 

 y Canadian. 



Potsdam. 

 Middle Cambrian. 

 Lower Cambrian. 



System. 



QUATERNARY. 

 TERTIARY. 



CRETACEors. 



JURASSIC. 

 TRIASSIC. 



CARBONIFEROUS. 



DEVONIAN 

 UPPER SILURIAN. 



LOWER SILURIAN. 



ALGONKIAN? 



0NTARIAN1 



LAURENTIAN? 



CENOZOIC. 



MESOZOIC. 



PALEO O C 



EPARCHiEAN. 



ARCHAEAN. 



