Environmental change controls of lacustrine carbonate, Cayuga Lake, New York

Research Article| May 01, 1998 Environmental change controls of lacustrine carbonate, Cayuga Lake, New York Henry T. Mullins Henry T. Mullins 1Department of Earth Sciences, Heroy Geology Laboratory, Syracuse University, Syracuse, New York 13244 Search for other works by this author on: GSW Google Scholar Author and Article Information Henry T. Mullins 1Department of Earth Sciences, Heroy Geology Laboratory, Syracuse University, Syracuse, New York 13244 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1998) 26 (5): 443–446. https://doi.org/10.1130/0091-7613(1998)026<0443:ECCOLC>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 Henry T. Mullins; Environmental change controls of lacustrine carbonate, Cayuga Lake, New York. Geology 1998;; 26 (5): 443–446. doi: https://doi.org/10.1130/0091-7613(1998)026<0443:ECCOLC>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 Dated sediment cores from Cayuga Lake, New York State, document that biologically mediated precipitation of calcite has been controlled by environmental change, both natural and anthropogenic, over the past 10 000 yr. During the Holocene Hypsithermal (∼9–4 ka [14C]), Milankovitch forcing of summer insolation in the Northern Hemisphere resulted in a broad increase (to 55%), then decrease (to <5%), of calcite content in bottom sediment. Warmer summers resulted in earlier onset of thermal stratification of the water column, which increased the duration of primary production as well as the abundance of picoplankton, which in turn increased the amount of calcite precipitated. At the end of the Hypsithermal ca. 3500 yr ago, global cooling greatly reduced the amount of calcite precipitated. However, since A.D. 1940, calcite contents in Cayuga Lake sediments have risen up to ∼20%. One hypothesis is that this recent increase in calcite is the result of cultural eutrophication (nutrient loading). However, this rise in calcite also closely tracks the anthropogenic rise of atmospheric carbon dioxide, suggesting a possible link to global environmental change. Further research on hard-water lake basins will be needed to test which of these two hypotheses is correct. 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.