WebIn a study of the chronology of arid-zone lacustrine sediments from Lake Ulaan in southern Mongolia, OSL and radiocarbon dates agreed in some samples, but the radiocarbon dates were up to 5800 years older in others. The sediments with disagreeing ages were determined to be deposited by aeolian processes: westerly winds delivered an influx of 14 WebGeochronology of Marine and Fluvial Sediments Elizabeth Rona Authors Info & Affiliations Science 26 Jun 1964 Vol 144, Issue 3626 pp. 1595 - 1597 DOI: 10.1126/science.144.3626.1595 Reference eLetters (0) Formats available You can view the full content in the following formats: VIEW PDF Reference Science 139 :728 (1963). …
Geochronology of lake sediments - ScienceDirect
WebDec 31, 2024 · Lake sediments are a valuable archive to document past flood occurrence and magnitude, and their evolution over centuries to millennia. This information has the potential to greatly improve current flood design and risk assessment approaches, which are hampered by the shortness and scarcity of gauge records. WebRates of sedimentation calculated from analyses of 210Pb activities in cores from two shallow lakes whose mean depths are 2.4m, Upper Klamath Lake and Lake Euwana … python tenacity wait
Geochronology of lake sediments - Publications of the …
WebJul 18, 2014 · In this study, a composite sediment profile, approximately 16 m in length, recovered from Shuangchiling (SCL) maar lake in Hainan Island, northern margin of western tropical Pacific, was selected to investigate the lake-level fluctuations, net precipitation variations, and the influence of the ocean–atmosphere system. WebJul 18, 2016 · Sediment from Lake Boeckella, Antarctic Peninsula, is richer in Ca, Cd, Cu, P, Sr and Zn than that of six other lakes in the area. The elements originate from Adélie penguin (Pygoscelis adeliae) guano on the lake shores.Changing Cu and P concentrations in the lake sediment are used as a proxy for penguin influence on the lake sediment … WebA varve is an annual layer of sediment or sedimentary rock.. The word 'varve' derives from the Swedish word varv whose meanings and connotations include 'revolution', 'in layers', and 'circle'. The term first appeared as Hvarfig lera (varved clay) on the first map produced by the Geological Survey of Sweden in 1862. Initially, "varve" referred to each of the … python tensor 转 list