Interpreting scattered in-situ produced cosmogenic nuclide depth-profile data
نویسندگان
چکیده
منابع مشابه
Measurement of long-term denudation rates in carbonate landscapes using in situ-produced 36Cl cosmogenic nuclide
ecent progresses have been made in the quantification of denudation of eroding landscapes and its links with topography. Despite these advances, data is still sparse in carbonate terrain, which covers a significant part of the Earth’s surface. We can now measure in situ-produced cosmogenic nuclides concentrations in various near-surface materials, allowing accurate quantification of the rates o...
متن کاملQuantifying glacial moraine age, denudation, and soil mixing with cosmogenic nuclide depth profiles
[1] Glacial boulders and soils on moraines are often dated to quantify the timing of glaciations and/or rates of chemical weathering in moraine chronosequences. A common assumption is that moraine crest erosion and soil mixing are unimportant. However, several studies suggest moraine denudation may be substantial. We evaluate the magnitude of moraine denudation and soil mixing in the Pinedale (...
متن کاملDeciphering boulder mobility and erosion from cosmogenic nuclide exposure dating
[1] Large boulders are prominent features in many geomorphic systems and are frequently targeted for cosmogenic exposure dating. Presently, there are little data or theory predicting exposure age, erosion rate, and mobilization frequency of boulders in environments such as channels, talus slopes, or moraines. Here we explore the potential for cosmogenic isotope analysis to constrain the transpo...
متن کاملDating sediment burial with in situ-produced cosmogenic nuclides: theory, techniques, and limitations
Dating sediment burial over million-year time scales is crucial in many areas of the Earth sciences and archeology, but is often difficult using traditional techniques. Sediment burial can be dated by the radioactive decay of cosmogenic nuclides, provided that the sediment was exposed to cosmic rays prior to burial. Dating calculations are straightforward if sediment is buried deeply and rapidl...
متن کاملChapter 4: Principles of Exposure Age Determination Using Terrestrial in Situ Produced Cosmogenic Nuclides
After the discovery of the cosmic radiation in the 1910’s, Grosse (1934) was the first who suggested that the cosmic radiation could produce radioactive nuclides at the surface of the Earth. The next step towards the utilisation of cosmogenic nuclides in earth sciences was the discovery of Libby (Libby et al. 1949) in the late 1940s: during its interaction with the atmosphere, cosmic radiation ...
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ژورنال
عنوان ژورنال: Quaternary Geochronology
سال: 2012
ISSN: 1871-1014
DOI: 10.1016/j.quageo.2012.02.020