28 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



slope, including the resurrected pre-Triassic and the uplifted Cretaceous 

 peneplain of southern New England. Also the Tertiary excavation in the 

 Cretaceous peneplain. 



95. Davis, W. M. 



The lost volcanoes of Connecticut. 



Pop. Sci. Mon., xl, 221-235, 1892. 



Mount Carmel may be the volcanic neck or the remains of the 

 plug in the vent through which the volcanic material of the Connecticut 

 valley was thrown out, particularly the ash and bombs at Lamentation 

 Mountain. 



(The evidence that Mount Carmel was a volcano which furnished the 

 Triassic lavas is unsatisfactory. — Ed.) 



96. Davis, W. M. 



The physical geography of Southern New England. 

 Nat. Geog. Mon., i, 269-304, 6 figs. New York, Ameri- 

 can Book Co., 1895. 



The subject is discussed under the following heads: i. Upland of 

 Southern New England, — its general features, origin, peneplain, 

 monadnocks; 2. ^" alleys in the upland, — slanting of peneplain, revival 

 of rivers, depth and breadth of valleys, Connecticut valley lowland, lava 

 ridges, distribution of population; 3. Glacial invasion, — forms of 

 drift, geographical consequences; 4. Coast-line, depression, modification 

 by waves and currents. 



97. Davis, W. M. 



The quarries in the lava beds at Meriden, Connecticut. 



Am. Jour. Sci. (4) i, 1-13, 3 figs., 1896. 



Description of the quarries in the Triassic formation at Meriden, 

 showing the vesicular upper surface of one lava bed under the dense 

 basal portion of a later flow, and a number of fractures dislocating the 

 double flow. Relation o.f these features to the geological structure of 

 the district. (See Davis, 98.) 



98. Davis, W. M. 



The Triassic formation of Connecticut. 

 U. S. Geol. Surv., i8th Ann. Rept., pt. ii, 9-192, 20 pis., 

 52 figs., 1898. 



Detailed description and discussion of the origin and formation of 

 the Triassic under three main heads: i. Deposition, — the floor of the 

 older rocks; Triassic strata; igneous rocks, intrusive and extrusive (an- 

 terior, main, and posterior sheets); vulcanism; isostasy; relation of 

 deposition and deformation. 2. Deformation, — changes from original 

 attitude, warps, faults. 3. Denudation, — general principles of land 

 sculpture; cycles of denudation; initial form of monoclinal faulting: Cre- 

 taceous peneplain; Tertiary dissection of the uplifted peneplain; Glacial 

 modifications of form and drainage; review of origin of drainage. 

 Previous studies of the Connecticut Triassic. The extrusive nature of 

 most of the trap formations is proved. The present arrangement of 

 ridges is shown to be due mainly to a uniform system of faulting; and 

 these fault lines are preserved in the topography of the region. 



(This is the most important single contribution to the geology of 

 central Connecticut, and in it is included practically all the matter 



