Quaternary Geology of Chile: Brief Outline

Abstract

Research Article| March 01, 1964 Quaternary Geology of Chile: Brief Outline KENNETH SEGERSTROM KENNETH SEGERSTROM U. S. Geological Survey, Federal Center, Denver, Colo. Search for other works by this author on: GSW Google Scholar Author and Article Information KENNETH SEGERSTROM U. S. Geological Survey, Federal Center, Denver, Colo. Publisher: Geological Society of America Received: 14 May 1963 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1964, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1964) 75 (3): 157–170. https://doi.org/10.1130/0016-7606(1964)75[157:QGOCBO]2.0.CO;2 Article history Received: 14 May 1963 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 KENNETH SEGERSTROM; Quaternary Geology of Chile: Brief Outline. GSA Bulletin 1964;; 75 (3): 157–170. doi: https://doi.org/10.1130/0016-7606(1964)75[157:QGOCBO]2.0.CO;2 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 The Quaternary deposits of Chile are generally classified according to their mode of deposition and the physiographic province in which they occur. Lacustrine, fluvial, mudflow, and eolian deposits occur in the Cordillera de la Costa, Central Valley, Altiplano, Cordillera de los Andes, and in Magallanes. In addition, deltaic and terrace deposits occur in coastal areas, and glacial deposits in the Central Valley, Cordillera de los Andes, and Magallanes.Quaternary volcanic deposits are present in all physiographic provinces, although in the Central Valley, Cordillera de la Costa, and along the shore of the Pacific they are mostly water-laid tuffs. Flows and pyroclastics are distributed throughout large areas of the Altiplano and the Cordillera de los Andes, and in a few isolated areas in Magallanes. The composition of the Quaternary tuffs of Chile ranges from rhyolitic to basaltic, but the lavas are basaltic or andesitic.The deposits have been very little warped or tilted, but they have been affected by displacements of fault blocks and by epeirogenic movements. The net results of epeirogeny have been general uplift of the coast north of Puerto Montt and general subsidence to the south. 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.