RT Journal Article SR Electronic T1 On some points in lithology JF American Journal of Science JO Am J Sci FD American Journal of Science SP 431 OP 440 DO 10.2475/ajs.s3-16.96.431 VO s3-16 IS 96 A1 Dana, J. D. YR 1878 UL http://www.ajsonline.org/content/s3-16/96/431.abstract AB