Rantin Lake, Yukon 10,900 to 3,100 YrBP Multiproxy Sediment Data Pompeani, D.P.; Steinman, B.; Abbott, M.B. Pompeani, D.P. Steinman, B. Abbott, M.B. PAGES 2k Network PAGES Arctic 2k earth science/paleoclimate/paleolimnology (age,null,95% confidence interval upper bound,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/lake levels|paleolimnology (lake level,null,null,dimensionless,null,lake levels|paleolimnology,null,null,N,The index values represent an estimate of relative lake level change) earth science/paleoclimate/instrumental (pH,lake water,null,dimensionless,null,instrumental,null,null,N,"measured July 13, 2006") earth science/paleoclimate/paleolimnology (volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,x10-5 units) earth science/paleoclimate/paleolimnology (depth at sample start,null,null,centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/instrumental (electrical conductivity,lake water,null,microsiemens per centimeter,null,instrumental,null,null,N,"measured July 13, 2006") earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/instrumental (collection water depth,null,null,meter,null,instrumental,null,null,N,null) earth science/paleoclimate/paleolimnology (depth at sample end,null,null,centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (calcium carbonate,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (organic matter,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/lake levels|paleolimnology (age,null,null,calendar year before present,null,lake levels|paleolimnology,null,null,N,null) earth science/paleoclimate/instrumental (dissolved oxygen,lake water,null,milligram per liter,null,instrumental,null,null,N,"measured July 13, 2006") earth science/paleoclimate/instrumental (lake water temperature,null,null,degree Celsius,null,instrumental,null,null,N,"measured July 13, 2006") earth science/paleoclimate/paleolimnology (age,null,95% confidence interval lower bound,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (density,dry sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (titanium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (age,null,null,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology earth science/paleoclimate/paleolimnology (Rantin Lake>LATITUDE 60.0296>LONGITUDE -129.0323) A multi-proxy analysis of two sediment cores from Rantin Lake are used to reconstruct past lake-level changes and to make inferences about millennial-scale variations in precipitation/ evaporation (P/E) balance in the southern Yukon, Canada between 10,900 and 3,100 cal yr BP. Analyses of calcium carbonate and organic matter concentration, magnetic susceptibility, titanium content, dry bulk density, and macrofossils are used to reconstruct water-level changes. The development of sand layers and deformed sediments at the deep-water core site (i.e. Core A-06) prior to ~10,900 cal yr BP suggest that lake level was lower at this time. Fine-grained organic sediment deposited from 10,600 to 9,500 cal yr BP indicates a rise in lake level. The formation of an unconformity at the shallow cores site (Core C-06) and the deposition of shallow-water calcium carbonate-rich facies at the Core A-06 site between ~9,500 and ~8,500 cal yr BP suggest lower lake levels at this time. Shallow-water facies gradually transition into a sand layer that likely represents shoreline reworking during an extreme lowstand that occurred at ~8,400 cal yr BP. Following this low water level, fine-grained organic-rich sediment formed by ~8,200 cal yr BP, suggesting deeper water conditions at core site A-06. Calcium carbonate concentrations are relatively low in sediment deposited from ~6,300 to 3,100 cal yr BP in Core A-06, indicating that lake level was comparatively higher during the middle and late Holocene. In general, results from this study suggest that the early Holocene was characterized by high P/E from ~10,500 to 9,500 cal yr BP, low P/E from ~9,500 to 8,400 cal yr BP, and return to higher P/E from ~8,200 to 3,100 cal yr BP. STUDY NOTES: Multiproxy sediment data from Rantin Lake, southern Yukon, covering the interval 10,900 to 3,100 calendar years before present. Paleoenvironmental proxies measured include carbonate content, organic matter content, bulk density, magnetic susceptibility, titanium content, and calculated lake level index. Rantin Lake, Yukon: 60.0296°N, 129.0323°W, 720m elevation, ~11m water depth. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Pompeani, D.P. Investigator : Steinman, B. Investigator : Abbott, M.B. 2012-06-30 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/13095 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/rantin2012.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/rantin2012.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/rantin2012.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/rantin2012.xls English https://www.ncdc.noaa.gov/paleo/study/13095 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/rantin2012.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/rantin2012.xls Pompeani, D.P., B.A. Steinman, and M.B. Abbott. 2012. A sedimentary and geochemical record of water-level changes from Rantin Lake, Yukon, Canada. Journal of Paleolimnology, Vol. 48, No. 1, June 2012, pp. 147-158. DOI: 10.1007/s10933-012-9602-9 START YEAR: 10900 cal yr BP * END YEAR: 3100 cal yr BP -129.0323 60.0296 -129.0323 60.0296