CONTRIBUTION TO THE DATING OF IRON METEORITES BY THE RHENIUM-OSMIUM METHOD

Journal Article · Sun Oct 01 00:00:00 EDT 1961 · Z. Naturforsch

OSTI ID:4809618

Herr, W; Hoffmeister, W; Hirt, B; Geiss, J; Houtermans, F G

The rhenium and osmium contents and the isotopic compositions of osmium in a number of meteorites were measured. Os./Re ratios and Os/sup 187/Os/sup 186/ ratios vary sufficiently to make the Re/sup 187/Os/sup 187/ dating-method appllcable to meteorites. Also, the isotopic compositions of several samples of common terrestrial osmium were determined, giving variations in the Os/sup187/Os/ sup 186/ ratio which are larger than the common terrestrial strontium variations. The half life of Re/sup 187/ still is only tentatively known. Taking the latest value (4.3 x 10/sup 10/ years), it is shown that the results are in agreement with the assumption that stone meteorites, iron meteorites, and the crust of the earth were formed about 4 to 5 AE ago. (auth)

• Research Organization: Universitat, Cologne; and Max-Planck-Institut fur Chemie, Mainz
• NSA Number: NSA-16-010751
• OSTI ID: 4809618
• Journal Information: Z. Naturforsch, Vol. Vol: 16a; Other Information: Orig. Receipt Date: 31-DEC-62
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

PHYSICS
AGE
EARTH
IRON
METEORITES
OSMIUM
OSMIUM 186
OSMIUM 187
QUANTITY RATIO
RHENIUM
RHENIUM 187
ROCKS