Climatic control of the late Quaternary turbidite sedimentology of Lake Kivu, East Africa: Implications for deep mixing and geologic hazards (2014)

Research Article| September 01, 2014 Climatic control of the late Quaternary turbidite sedimentology of Lake Kivu, East Africa: Implications for deep mixing and geologic hazards Xuewei Zhang; Xuewei Zhang 1Department of Earth Sciences, Syracuse University, Syracuse, New York 13203, USA Search for other works by this author on: GSW Google Scholar Christopher A. Scholz; Christopher A. Scholz 1Department of Earth Sciences, Syracuse University, Syracuse, New York 13203, USA Search for other works by this author on: GSW Google Scholar Robert E. Hecky; Robert E. Hecky 2Large Lakes Observatory, University of Minnesota, Duluth, Minnesota 55812, USA Search for other works by this author on: GSW Google Scholar Douglas A. Wood; Douglas A. Wood 1Department of Earth Sciences, Syracuse University, Syracuse, New York 13203, USA Search for other works by this author on: GSW Google Scholar Hubert J. Zal; Hubert J. Zal 3Department of Earth and Environmental Sciences, University of Rochester, Rochester, New York 14627, USA Search for other works by this author on: GSW Google Scholar Cynthia J. Ebinger Cynthia J. Ebinger 3Department of Earth and Environmental Sciences, University of Rochester, Rochester, New York 14627, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Xuewei Zhang 1Department of Earth Sciences, Syracuse University, Syracuse, New York 13203, USA Christopher A. Scholz 1Department of Earth Sciences, Syracuse University, Syracuse, New York 13203, USA Robert E. Hecky 2Large Lakes Observatory, University of Minnesota, Duluth, Minnesota 55812, USA Douglas A. Wood 1Department of Earth Sciences, Syracuse University, Syracuse, New York 13203, USA Hubert J. Zal 3Department of Earth and Environmental Sciences, University of Rochester, Rochester, New York 14627, USA Cynthia J. Ebinger 3Department of Earth and Environmental Sciences, University of Rochester, Rochester, New York 14627, USA Publisher: Geological Society of America Received: 29 Apr 2014 Revision Received: 24 Jun 2014 Accepted: 28 Jun 2014 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2014 Geological Society of America Geology (2014) 42 (9): 811–814. https://doi.org/10.1130/G35818.1 Article history Received: 29 Apr 2014 Revision Received: 24 Jun 2014 Accepted: 28 Jun 2014 First Online: 09 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 Xuewei Zhang, Christopher A. Scholz, Robert E. Hecky, Douglas A. Wood, Hubert J. Zal, Cynthia J. Ebinger; Climatic control of the late Quaternary turbidite sedimentology of Lake Kivu, East Africa: Implications for deep mixing and geologic hazards. Geology 2014;; 42 (9): 811–814. doi: https://doi.org/10.1130/G35818.1 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 SocietyGeology Search Advanced Search Abstract The Lake Kivu catchment in the East African Rift is subject to various geologic hazards, including frequent volcanic eruptions, earthquakes, and potential limnic overturns and degassing events. Integration of high-resolution seismic reflection data, 14C dated sediment cores, and lake-floor bathymetry reveals large axial and transverse turbidite systems in the eastern basin of the lake. The turbidites were sourced by hyperpycnal river flows during exceptional floods, and the temporal occurrence of the turbidites was climatically controlled. The turbidite record over the past ∼12 k.y. is correlated with the regional paleohydrologic records from tropical East Africa. Our study suggests that flood-introduced turbidites preserved in deep lakes are indicators of hydrological changes, and that extreme floods in Lake Kivu's recent history may have triggered deep mixing events. This study also has implications for the current degassing efforts in Lake Kivu; potential geologic hazards may be triggered by extraordinary turbidity currents, and need to be considered in the design and deployment of gas extraction facilities. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.