2300 yr history of seismicity from silting events, in Lake Tadoussac, Charlevoix, Quebec

Research Article| September 01, 1990 2300 yr history of seismicity from silting events, in Lake Tadoussac, Charlevoix, Quebec Ronald Doig Ronald Doig 1Department of Geological Sciences, McGill University, 3450 University Street, Montreal H3A 2A7, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Ronald Doig 1Department of Geological Sciences, McGill University, 3450 University Street, Montreal H3A 2A7, Canada Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1990) 18 (9): 820–823. https://doi.org/10.1130/0091-7613(1990)018<0820:YHOSFS>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Ronald Doig; 2300 yr history of seismicity from silting events, in Lake Tadoussac, Charlevoix, Quebec. Geology 1990;; 18 (9): 820–823. doi: https://doi.org/10.1130/0091-7613(1990)018<0820:YHOSFS>2.3.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 SocietyGeology Search Advanced Search Abstract Silt layers in organic-rich lake sediments are interpreted to represent the historic earthquakes of 1638, 1663, 1791, 1870, and 1925 of the Charlevoix region of eastern Canada. This interpretation is based on the relative spacing of the layers and the accelerator-mass spectrometer 14C dating of a twig in one of the cores. The silt layers were presumably caused by landslides on tributary streams and by resuspension of the sediment. The cores contain up to 22 layers, 1 to 45 mm thick, over a depth equivalent to about 2300 yr. If there is a correlation between thickness and magnitude, there would have been four events of Richter magnitude 7.5 or greater in A.D. 1663, 1320, 60, and 320 B.C. The 18 other layers could correspond to earthquakes of magnitude 6 to 7. The recurrence interval from 300 B.C. to A.D. 800 is 120 yr, followed until A.D. 1500 by a quiet period, when there was a single large event. The recurrence interval from A.D. 1500 to the present is 75 yr. 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.