40K/40Ar dating of lavas and illites
S3CC19: Dual collector mass spectrometer, coupled to an extraction line (Induction Furnace) and purification line of gases extracted from volcanic rocks
Description of the instrument:
Nier source mass spectrometer equipped with a Faraday double-cup detector enabling the simultaneous collection of 40Ar and 36Ar. The mass spectrometer is designed for high-precision measurements of Argon isotopes in terrestrial and extraterrestrial samples. The mass-spectrometer is coupled to an automated gas purification line and equipped with GP10 and GP50 getters, a titanium sublimator pump, ensuring gas purification and low procedural blanks. The extraction of the gases from the samples is achieved by an induction furnace This spectrometer and the connected extraction line are dedicated to the exclusive measurement of the isotopes of the Argon.
Principle of analysis:
https://w3.lsce.ipsl.fr/Phocea/Vie_des_labos/Ast/ast_sstechnique.php?id_ast=55
Analysis achieved by the instrument:
40K/40Ar datings on groundmass (lavas) and Illites.
Contacts:
H.Guillou (This email address is being protected from spambots. You need JavaScript enabled to view it.)
V. Scao (This email address is being protected from spambots. You need JavaScript enabled to view it.)
S. Nomade (séThis email address is being protected from spambots. You need JavaScript enabled to view it.)
δ18O and δ13C analyses in carbonates
IRMS GV ISOPRIME
Description of instrument:
The GV ISOPRIME mass spectrometer is coupled to a extraction line. It was installed in 2006. This spectrometer is a Dual Inlet type spectrometer. It is dedicated to the analysis of (bio) carbonates : benthic and planktonic foraminiferae, carbonate powder (speleothems for example). The precisions are in the order of 0.08 and 0.05 respectively for oxygen and carbon. The amount of material required for a measurement is in the range of 40-100 micrograms.
Principle of analysis:
http://en.wikipedia.org/wiki/Isotope-ratio_mass_spectrometry
Analyzes carried out on the instrument:
Isotopic analysis of carbonates, carbon and oxygen stable isotopes.
Contacts:
D. Blamart: This email address is being protected from spambots. You need JavaScript enabled to view it.
P. Richard: This email address is being protected from spambots. You need JavaScript enabled to view it.