Algonkian formations of northwestern Montana

Research Article| January 01, 1906 Algonkian formations of northwestern Montana CHARLES D. WALCOTT CHARLES D. WALCOTT Search for other works by this author on: GSW Google Scholar Author and Article Information CHARLES D. WALCOTT Publisher: Geological Society of America First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 1906 Geological Society of America GSA Bulletin (1906) 17 (1): 1–11. https://doi.org/10.1130/GSAB-17-1 Article history First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation CHARLES D. WALCOTT; Algonkian formations of northwestern Montana. GSA Bulletin 1906;; 17 (1): 1–11. doi: https://doi.org/10.1130/GSAB-17-1 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 IntroductionIn 1898 I made a reconnaissance of the pre-Cambrian formations of the Belt mountains of Montana and published the results.* The section extended from the unconformable Cambrian above to Archean complex at the base. In 1900 I crossed the Belt mountains and endeavored to trace the connection, north of Helena, of the Belt terrane and the pre-Cambrian rocks of the Rocky Mountain "front" at Lewis and Clark pass and north on the south fork of the Dearborn river. It was evident that a great series of strata extended westward beneath the Cambrian that was in general similar to the Belt terrane, but quite different in detail. In 1901, at my request, Mr Bailey Willis studied the Front ranges of the Rocky mountains in northern Montana and found a great series of strata referred to the Algonkian.† In the survey of the Cœur d'Alene mining district of Idaho Mr F. . . . 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.