NO. 1715. OLIVINE-DIABASE FROM NORTH CAROLINA.— POGUE. 483 



16. Lewis, J. V. Petrography of the Newark igneous rocks of New Jersey. 



Ann. Rept. Geol. Sur. N. J., 1907, pp. 97-167. 



Includes a detailed description of olivine-diabase from the Palisades in New Jersey, with 

 analyses, diagrams, photomicrographs, etc. 



17. The Palisade diabase of New Jersey. 



Araer. Jour. Sci., vol. 26, 1908, pp. 155-162. 



Olivine-diabase containing 15 to 20 per cent olivine occurs in a ledge 10 to 20 feet tliick, which 

 extends along the Palisades northward from Jersey City for 20 miles. 



18. Merrill, G. P. On the collection of Maine building stones in the U. S. National 



Museum. 



Proc. U. S. Nat. Mus., vol. 6, 1883, pp. 176-177. 



Brief description of olivine-diabase quarried at Addison Point and Vinalhaven. Olivine 

 frequently much altered to serpentine. 



19. OsANN, A. Report on the rocks of Trans-Pecos, Texas. 



Tex. Geol. Survey, 4th Ann. Rept., 1893, pp. 123-138. 



Petrographic characters of an olivine-diabase from the Diablo Mountains. Olivine is very 

 fresh. Similar rock occurs in the Van Horn mountains. 



20. Palache, C. Geology about Chichagof Cove, Stepovak Bay, with notes on Popof 



and Unga islands. 

 Harriman Alaska Exp., vol. 4, 1904, pp. 69-88. 



Mentions a few ''olivine-diabase" dikes. No olivine present, but serpentine resulting from it. 



21. PoGUE, J. E. Geology and structure of the ancient volcanic rocks of Davidson 



County, North Carolina. 

 Amer. Jour. Sci., vol. 28, 1909, pp. 229-230. 



Includes brief account of the olivine-diabase here described in detail. 



22. Shaler, N. S. Geology of Cape Ann. 



U. S. Geol. Survey, 9th Ann. Rept., p. 609. 

 Olivine present in one dike. 



23. Smith, G. O. (/n Analyses of rocks). 



U. S. Geol. Survey, Bull. No. 168, 1900, p. 225. 



Chemical analyses of olivine-diabase from Kittitas Coimty, Washington. 



24. Smyth, C. H., Jr. A group of diabase dikes among the Thousand Islands, St. 



Lawrence River. 

 Trans. N. Y. Acad. Sci., vol. 13, 1894, pp. 209-214. 



" Olivine is an important constituent of a part of the dikes, is present in small amount in others, 

 and is absent in about half." 



25. Van Hise, C. R., and Bayley, W. S. The Marquette iron-bearing district of 



Michigan. 

 U. S. Geol. Survey, Mon. 28, 1897. 



Mentions the occurrence of fresh olivine-diabase. No petrographic description. 



26. Wadsworth, M. E. Peridotytes, gabbros, diabases, and andesites of Minnesota. 



Minn. Geol. Survey, Bull. No. 2. 



Describes briefly many olivine-diabases in which the olivine is more or less altered. 



27. Watson, T. L. The occurrence of nickel in Virginia. 



Am. Inst. Min. Eng., Bull. No. 17, 1907, pp. 829-843. 

 Very brief description of dikes of olivine-diabase in Floyd County. 



28. Weathering of diabase near Chatham, Virginia. 



Am. Geol., vol. 22, 1898, p. 87. 



Gives analyses of three olivine-diabases, two of which are not fresh. 



29. Mineral resources of Virginia, pp. 36-37. 



Includes summary of articles on olivine-diabase in Virginia. 



