High-resolution record of cyclic climatic change during the past 4 ka from Lake Turkana, Kenya

Research Article| June 01, 1988 High-resolution record of cyclic climatic change during the past 4 ka from Lake Turkana, Kenya John D. Halfman; John D. Halfman 1Department of Geology, Duke University Marine Laboratory, Beaufort, North Carolina 28516 Search for other works by this author on: GSW Google Scholar Thomas C. Johnson Thomas C. Johnson 1Department of Geology, Duke University Marine Laboratory, Beaufort, North Carolina 28516 Search for other works by this author on: GSW Google Scholar Author and Article Information John D. Halfman 1Department of Geology, Duke University Marine Laboratory, Beaufort, North Carolina 28516 Thomas C. Johnson 1Department of Geology, Duke University Marine Laboratory, Beaufort, North Carolina 28516 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1988) 16 (6): 496–500. https://doi.org/10.1130/0091-7613(1988)016<0496:HRROCC>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 John D. Halfman, Thomas C. Johnson; High-resolution record of cyclic climatic change during the past 4 ka from Lake Turkana, Kenya. Geology 1988;; 16 (6): 496–500. doi: https://doi.org/10.1130/0091-7613(1988)016<0496:HRROCC>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 Profiles of carbonate content and lamination thickness in an 11.3 m core from Lake Turkana are interpreted as a record of climatic change for the past 4 ka. On a time scale of millennia, the data agree with other paleohydrologic records from sub-Saharan east Africa. Time-series analysis of both data sets reveal periods of about 270,200, 165, and 100 yr. The thickness data suggest additional periods of about 78, 44, 31, 25, and possibly 20 yr. The sediments consist of laminated light and dark couplets, which are interpreted as a response to an average 4-yr variability in the hydrology of the Ethiopian Pla- teau. We suggest that this may be a feedback from the El Niño-Southern Oscillation. 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.