You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
10Be: Recent Applications in Earth Sciences [and Discussion]
L. Brown and P. Damon
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
Vol. 323, No. 1569, Ultra-High-Sensitivity Mass Spectrometry with Accelerators (Aug. 25, 1987), pp. 75-86
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/38002
Page Count: 12
You can always find the topics here!Topics: Sediments, Isotopes, Sedimentary soils, Atoms, Soil erosion, Erosion, Subduction, Agricultural soils, Lava, Tektites
Were these topics helpful?See somethings inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
10Be, a cosmogenic isotope produced by cosmic rays interacting with the Earth's atmosphere and surface, has chemical and physical properties that make it useful as a tracer for some terrestrial processes and a geological clock for a few substances. The rarity of the stable isotope, 9Be, allows 10Be to be detected in natural materials at extremely low levels with backgrounds for rocks, sediments etc. below 105 atom g-1 now attainable, a value to be compared with an average annual global deposition rate of 1.3 × 106 atom cm-2. The affinity of Be for the components of soil and sediment is sufficiently high that its contact with them effectively immobilizes it, thereby allowing 10Be to function as a tracer of sediment transport. The half-life of 1.5 Ma is convenient for some geological studies. Application has been found in cosmic-ray history, formation of manganese nodules, pelagic sedimentation, island-arc volcanism, soil evolution, soil erosion and rock weathering.
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences © 1987 Royal Society