RT Journal Article SR Electronic T1 The columnar structure in the igneous rock on Orange Mountain, New Jersey JF American Journal of Science JO Am J Sci FD American Journal of Science SP 321 OP 331 DO 10.2475/ajs.s3-31.185.321 VO s3-31 IS 185 A1 Joseph Paxson Iddings YR 1886 UL http://www.ajsonline.org/content/s3-31/185/321.abstract AB