Abstract
Research Article| January 01, 1916 Silurian formations of southeastern New York, New Jersey, and Pennsylvania CHARLES SCHUCHERT CHARLES SCHUCHERT Search for other works by this author on: GSW Google Scholar GSA Bulletin (1916) 27 (1): 531–554. https://doi.org/10.1130/GSAB-27-531 Article history received: 10 Aug 1916 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation CHARLES SCHUCHERT; Silurian formations of southeastern New York, New Jersey, and Pennsylvania. GSA Bulletin 1916;; 27 (1): 531–554. doi: https://doi.org/10.1130/GSAB-27-531 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract IntroductionThe object of this paper is to show that the Shawangunk grit and conglomerate holds the position of the Medina sandstone and equivalent formations which together throughout the Appalachian region occur at the base of the Silurian system of strata. The Shawangunk-Medina formations have overlying them, in unbroken sequence, as one gets about 30 miles from the main eastern outcrops, the Clinton shales. Then everywhere follows a great break in deposition, for all of the higher Niagaran is absent—that is, the equivalent of at least all of the Lockport and Guelph. Overlying the Clinton or the Shawangunk-Medina, in disconformable contact, is a thick shale series that below is usually of a red or pink color, and above passes into calcareous shales or ribbon limestones, the natural cement rocks of the northeastern Appalachian area. The latter, or Cayugan series, appear to go unbroken into the Lower Devonian, and yet where . . . This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not currently have access to this article.
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