No. 8.] BIBLIOGRAPHY OF CONNECTICUT GEOLOGY. J^ 



524. Davis, W. M. 



Diagrammatic map of the Cretaceous peneplain in 

 New England. 



Geol. Soc. America, Bull., ii, 551, 1891. 



Shows general location of Triassic lowlands and crystalline areas of 

 the whole of Connecticut; also of middle and western Massachusetts, 

 and western New York. Scale about i inch ;= 90 miles. 



525. Davis, W. M. 



Sketch map of the Triassic area of Connecticut. 

 Am. Jour. Sci., (4) i, 2, i8g6. 



Locates main trap ridges and fault lines. 



526. Davis, W. M, 



Sketch maps and diagrams illustrating structure in the 

 Triassic area. 



U. S. Geol. Surv., i8th Ann. Rept., pt. ii, 1-192, 1898. 



Uplands and lowlands, fig. i; trap ridges, fig. 5; abnormal fault 

 causing Vineyard gap, fig. 24; marginal faults and Lamentation fault 

 block, fig. 25; South Glastonbury and South Manchester corners, fig. 32; 

 trap ridges near southwest end of Lamentation block, fig. 33 ; conse 

 quent Jurassic drainage, fig. 36; antecedent Triassic drainage, fig. 

 37; drainage on the Cretaceous peneplain, fig. 40; pre-Glacial drainage 

 fig. 50; existing drainage of the Connecticut Triassic area, fig. 5:; 

 Quinnipiac and Mill river headwaters, fig. 52. 



527. Davis, W. M. 



Geological map of the Triassic area of Connecticut. 

 U. S. Geol. Surv., iSth Ann. Rept., pt. ii, pi. xix, 1898. 



Locates, in color, the following formations: Upper sandstones, pos- 

 terior trap sheet, posterior sandstones and shales, main trap sheet, an- 

 terior sandstones and shales, anterior trap sheet, tufaceous deposits, 

 under sandstones, intrusive trap sheets, dikes, crystalline areas. Locates 

 also lines of faulting. Scale i inch = 2 miles; contour interval 100 ft. 



528. Davis, W. M., and Griswold, L, S. 



The Connecticut valley Triassic area, and a portion of 

 crystallines on either side. 



Geol. Soc. America, Bull., v, 520, 1894. 



Principal trap ridges indicated. Faults along eastern boundary and 

 within Triassic shown. Scale i inch =r 20 miles. 



529. Davis, W. M., and Loper, S. W. 



Sketch map of about ten square miles near Meriden. 

 Geol. Soc. America, Bull., ii, 423, 1891. 



Show parts of Highby, Chauncy, Lamentation, and Quarry blocks. 

 Localities of fossiliferous anterior and posterior shales indicated. 



530. Davis, W. M., and Whittle, C. L. 



Map of Triassic area in Connecticut from Long Island 

 Sound to the north bend of the Farmington river. 

 Mus. Comp. Z06I., Bull., xvi, 137, pi. i, 1889. » 



Based on Percival's map of Connecticut. Gives location of trap 

 ridges and main geographic features. Scale 1.35 inches:^ 10 miles. 



