No. 8.] BIBLIOGRAPHY OF CONNECTICUT GEOLOGY. 59 



250. Russell, I. C. 



On the occurrence of a solid hydrocarbon in the eruptive 

 rocks of New Jersey. 



Am. Jour. Sci., (3) xvi, 11 2- 114, 1878. 



Description of brilliant jet black carbonaceous mineral resembling 

 albertite, in the cavities of amygdaloid trap: comparison with a similar 

 mineral described by Percival as occurring in the trap areas of Con- 

 necticut. (See Dana, 44.) 



■251. Russell, I. C. 



On the former extent of the Triassic formation in the 

 United States. 



Am. Nat., xiv, 703-712, 1880. 



The detached areas of Triassic rocks, from South Carolina north- 

 ward to Connecticut and Massachusetts, are portions of the one great es- 

 tuary deposit, which has been broken up into separate areas by up- 

 heaval and denudation. 



252. Russell, I. C. 



Subaerial decay of rocks, and origin of red color of cer- 

 tain formations. 



U. S. Geol. Surv., Bull. No. 52, 1-56, 5 pis., 1889. 



Red color of Connecticut sandstones due to coating of quartz grains 

 with ferric oxide in residual clay. Sandstones were " formed from 

 debris of lands that had been long exposed to the action of a warm, 

 moist atmosphere." (See Dana, 68.) 



^53. Russell, I. C. 



The Newark system. 



U. S. Geol. Surv., Bull. No. 85, 340 pp., 4 figs., 13 pis., 

 1892. 



Summarizes existing knowledge regarding Triassic rocks (Newark 

 System) of Connecticut and other eastern states. The Connecticut 

 valley and Southbury areas are mapped and described. Rocks were de- 

 posited in tide-swept estuaries during a period of mild climate. A list 

 of fossils is given. Igneous rocks associated with sediments are dikes, 

 intrusive sheets, and lava flows. The structure of the area is mono- 

 clinal, and is controlled by " faults of all degrees of displacement up 

 to many hundreds of feet," as shown by Davis. " Each of the Newark 

 areas [along the Atlantic border] was originally much larger than 

 now, and there is a strong probability that all the areas between Massa- 

 chusetts and South Carolina were originally united." Newark system is 

 in upper part Jurassic and lower part Triassic. The " Index to the 

 literature of the Newark system" (133-339) is very complete. 



^54. Seeley, L. 



Garnet Rock. 



Am. Jour. Sci., (i) iii, 241-242, 1821. 



A rock in Redding abundantly studded with garnets of various sizes 

 and qualities. 



