Stratigraphy of Cretaceous-Eocene Transition Beds in Eastern Montana and the Dakotas

Abstract

Research Article| September 30, 1924 Stratigraphy of Cretaceous-Eocene Transition Beds in Eastern Montana and the Dakotas W. T. THOM, JR.; W. T. THOM, JR. Search for other works by this author on: GSW Google Scholar C. E. DOBBIN C. E. DOBBIN Search for other works by this author on: GSW Google Scholar Author and Article Information W. T. THOM, JR. C. E. DOBBIN Publisher: Geological Society of America Received: 27 May 1924 First Online: 02 Mar 2017 Online Issn: 1943-2674 Print Issn: 0016-7606 © 1924 Geological Society of America GSA Bulletin (1924) 35 (3): 481–506. https://doi.org/10.1130/GSAB-35-481 Article history Received: 27 May 1924 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation W. T. THOM, C. E. DOBBIN; Stratigraphy of Cretaceous-Eocene Transition Beds in Eastern Montana and the Dakotas. GSA Bulletin 1924;; 35 (3): 481–506. doi: https://doi.org/10.1130/GSAB-35-481 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 IntroductionThe Cretaceous-Eocene boundary, or Laramie problem, is one of the outstanding questions of North American geology, and one in which the writers have become deeply interested as the result of nine and six field seasons, respectively, spent as members of the U. S. Geological Survey parties in Montana, Dakota, and Wyoming areas. The intimate knowledge of local stratigraphy thus gained, through coal or oil and gas work in a number of fields, has afforded a background for extensive reconnaissance studies carried out in the spring and autumn of 1923, during which critical sections in Montana and Dakota areas were reexamined, and the results obtained by earlier workers in local and more or less detached fields were interpreted and integrated. In this work an earnest effort has been made to apply all practicable checks, to the end that the conclusions reached may be as free as possible from coloring by . . . 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.