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Fast neutron irradiation of potassium-bearing minerals produces artificial 3 9 Ar. Mass spectrometric measurement of the 3 9 Ar/4 0 Ar ratio allows to calculate a geological age. Stepwise degassing of the sample yields insight into its history. As an example, analysis of a single hornblende from the Valtellina (Italian Alps) reveals an unexpected pre-Alpine history of that region.

Neutron activation analysis in geochronology:the 40Ar/39Ar technique

ODDONE, MASSIMO;
1986-01-01

Abstract

Fast neutron irradiation of potassium-bearing minerals produces artificial 3 9 Ar. Mass spectrometric measurement of the 3 9 Ar/4 0 Ar ratio allows to calculate a geological age. Stepwise degassing of the sample yields insight into its history. As an example, analysis of a single hornblende from the Valtellina (Italian Alps) reveals an unexpected pre-Alpine history of that region.
1986
The Inorganic & Nuclear Chemistry category includes resources concerned with elements other than carbon and with the preparation, properties, and reactions of their compounds. Certain simple carbon compounds are treated in inorganic chemistry, including the oxides, carbon disulfide, the halides, hydrogen cyanide, and salts, such as the cyanides, cyanates, carbonates and hydrogencarbonates. Resources dealing with coordination chemistry and organo-metallic compounds (those containing a carbon-metal bond) are also included in this field. Resources dealing with nuclear chemistry, including fission and fusion reactions and their products are placed here. Radiochemistry is also covered in this category and includes such topics as the preparation of radioactive compounds, the separation of isotopes by chemical reactions, the use of radioactive labels in studies of mechanisms, and experiments on the chemical reactions and compounds of transuranic elements.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
sì
2-s2.0-0010259406
Sì, ma tipo non specificato
Inglese
Internazionale
STAMPA
99
1
153
159
7
2
info:eu-repo/semantics/article
262
Oddone, Massimo; I. M., Villa
1 Contributo su Rivista::1.1 Articolo in rivista
none
1.1 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/491026
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