Paleozoic intra-formational conglomerates

Abstract

Research Article| January 01, 1893 Paleozoic intra-formational conglomerates* Charles D. Walcott Charles D. Walcott Search for other works by this author on: GSW Google Scholar GSA Bulletin (1893) 5 (1): 191–198. https://doi.org/10.1130/GSAB-5-191 Article history 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 D. Walcott; Paleozoic intra-formational conglomerates. GSA Bulletin 1893;; 5 (1): 191–198. doi: https://doi.org/10.1130/GSAB-5-191 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Introduction.Usually the presence of a conglomerate in a stratigraphic series of rocks is a matter of considerable importance to the geologist. He naturally infers the presence of a break in the continuity of sedimentation; an orographic movement of greater or less extent; erosion of a preexisting formation. He sees, in his mental review, the waves sorting and depositing sand, pebbles and bowlders derived from the uplifted land. The idea of the lapse of a period of time of considerable and often long duration is formed as he recalls orographic movement, erosion and unconformity of deposition. If the conglomerate is near the base of some formation or series of formations, he views it as almost conclusive evidence of the marked change that introduced the new deposits. This is all fair induction from observed facts, and it is the general and approved experience of geologists. When I ventured to describe to . . . This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.