No. 8.] BIBLIOGRAPHY OF CONNECTICUT GEOLOGY. 2/ 



Am. Jour. Sci., (3) xxxvii, 423-434, 1889. Abstract: Pop. 

 Sci. Mon., xxvi, 573, 1889. 



Discusses mechanism of monoclinal faulting; topographic develop- 

 ment of the Triassic belt, etc. (See Davis, 85, 86, 98.) 



go. Davis, W. M. 



Remarks on structure of fillings of fissures in trap at 

 Meriden. 



Geol. Soc. America, Bull, i, 442, 1890. 



Brief mention of the fact that detrital material supplied from above 

 takes a horizontal stratification as it settles into fissures in the trap 

 of the quarry at Meriden. (See Davis, 98.) 



gi, Davis, W. M. 



Physical geography of southern New England. 

 Johns Hopkins Univ. Circ, x, No. 87, 78, 79, 1891. 



Chief variety of form of southern New England is found in the val- 

 leys etched beneath the general surface; the upland is a peneplain; 

 southern New England a region of ancient deeply buried rocks, 

 consisting of " greatly distorted and overturned schists and bedded 

 rocks." " The present altitude of the highlands is the result of 

 subsequent massive elevation;" the hills that lie above the peneplain 

 are remnants of the late Cretaceous surface, and the valleys of post- 

 Cretaceous date; the effect of glaciation and the action of currents 

 and waves upon the shore line is described. (See Davis, 96.) 



g2. Davis, W. M. 



The Triassic sandstone of the Connecticut valley. 

 Johns Hopkins Univ. Circ, x. No. 87, 79, 1891. 



Four stages of the formation are pointed out: i. Accumulation of 

 sandstone and shale with sheets of lava, and at least one great intrusive 

 sheet; 2. Post-Triassic stage of tilting and faulting; 3. Reduction of 

 the elevated mass to a peneplain during Jurassic and Cretaceous time; 

 4. In Tertiary time, gentle uplifting and tilting to the south or south- 

 east. After this period the streams cut the valleys down nearly to a 

 new base-level. (See Davis, 96, 98.) 



gs. Davis, W. M. 



The Triassic formation of Connecticut. 

 Geol. Soc. America, Bull., ii, 415-424, 1891. 



Discussion of the structure and origin of the Triassic formation, 

 particularly of the area around Meriden; Mount Carmel mentioned as a 

 possible vent through which the lava of the trap sheets rose, to the 

 surface. (For complete discussion of Triassic formation, see Davis, 

 98.) 



.g4. Davis, W. M. 



The geological dates of origin of certain topographic 

 forms on the Atlantic slope of the United States. 



Geol. Soc. America, Bull., ii, 545-586, 1891. Abstract: 

 Am. Geol., viii, 260, 1891. 



Classification of topographic forms according to age or degree of 

 development. Description of the topographic forms of the Atlantic 



