01010cam a22002891i 4500 gs 05000681 DLC 20260227111301.0 790522s1893 dcuabf b f000 0 eng gs 05000681 (OCoLC)4991491 DLC ICharE DLC premarc QE75 .B9 no. 107 Kemp, James Furman, 1859-1926. The trap dikes of the lake Champlain region / by James Furman Kemp and Vernon Freeman Marsters. Washington, Govt. Print. Off., 1893. 62 p. : iv pl. (incl. front., fold. map) diagrs. ; 24 cm. U.S. Geological survey. Bulletin no. 107 Bibliographical foot-notes. Literature of the diabases : p. 28-29. Geology Champlain Valley. Dikes (Geology) Igneous rocks. Marsters, Vernon Freeman, joint author. United States. Geological Survey. Bulletin ; 107. 24265 24265