Silicon 32 dating

18-May-2016 09:59 by 4 Comments

Silicon 32 dating

Accelerator Mass Spectrometry (AMS)/Decay Counting: not commercially analyzed Currently this is not a tracer used beyond research applications and so no pricing data is available.

Ocean/ surface/ groundwater and biogenic silica are near or below the AMS detection limit of Si is used to date glaciers, because it is stored in the ice.It is also used as a standard tool to date sediments in research on paleoenvironmental change, and is especially useful in studies of human impacts.Current research into further uses of silicon-32 include oceanic circulation, atmospheric circulation (specifically, 100-1000 year time scale exchange processes between stratosphere and troposphere), and determining ground water infiltration rates.Home About This Site Comments Help Links Window Version Show Table With: Name Atomic Number Atomic Mass Electron Configuration Number of Neutrons Melting Point Boiling Point Date of Discovery Crystal Structure Element Groups: Alkali Metals Alkaline Earth Metals Transition Metals Other Metals Metalloids Non-Metals Halogens Noble Gases Rare Earth Elements Name: Silicon Symbol: Si Atomic Number: 14 Atomic Mass: 28.0855 amu Melting Point: 1410.0 °C (1683.15 K, 2570.0 °F) Boiling Point: 2355.0 °C (2628.15 K, 4271.0 °F) Number of Protons/Electrons: 14 Number of Neutrons: 14 Classification: Metalloid Crystal Structure: Cubic Density @ 293 K: 2.329 g/cm Date of Discovery: 1823 Discoverer: Jons Berzelius Name Origin: From the Latin word silex (flint) Uses: glass, semiconductors Obtained From: Second most abundant element.Please contact Carol Kendall ([email protected]) for questions and comments regarding this page. Si activity in wet precipitations, surface and sub-surface waters and laboratory experiments with rain-water and rock/soil systems have established its usefulness for (1) dating groundwaters younger than 2000 years and (2) checking the validity of C, the deduced apparent age (irrespective of the model used) is in fact close to the ''true age'' of the groundwater.

However, if this is not so, it would be expected that a given water body will look younger on the basis of a shorter-lived radioisotope and that the ''true age'' would be even greater than that obtained on the basis of the longer-lived isotope.Such a situation would result from mixing of old and young waters in the aquifer.Thus, the fact that the validity of the International Atomic Energy Agency, Vienna (Austria); United Nations Educational, Scientific and Cultural Organization, Paris (France); 935 p; Sep 1970; p.847-863; Symposium on Use of Isotopes in Hydrology; Vienna (Austria); 9-; IAEA-SM--129/54; ISSN 0074-1884; ; 26 refs., 5 figs., 5 tabs. Targeting this age range can provide geochronological reconstructions of paleoindicators that identify recent human and climate-induced shifts in coastal areas.We are preparing detectors and kilogram-scale sample preparation techniques for such a study of Puget Sound sediments.