Browsing by Author "Ravizza G."
- DSpace Home
- →
- Browsing by Author
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing by Author "Ravizza G."
Now showing items 1-4 of 4
-
Dalai T.K.; Ravizza G. (2006)New osmium (Os) isotope and platinum group element (PGE) concentration data are used in conjunction with published 3He and Th isotope data to determine the relative proportions of lithogenic, extraterrestrial and hydrogenous ...
-
Ravizza G.; Pyle D. (1997)We have modified methods currently used to determine Os isotope ratios with NiS fire assay preconcentration to allow measurement of PGE concentrations and Os isotope ratios on the same sample powder. Samples are spiked ...
-
Peucker-Ehrenbrink B.; Ravizza G. (2000)We reevaluate the effects of sampling artifacts on estimates of the flux of cosmic dust to Earth by modeling the population of extraterrestrial particles as a function of surface-area and time-interval sampled. Results ...
-
Ravizza G.; Peucker-Ehrenbrink B. (2003)Osmium (Os) isotope analyses of bulk sediments from the South Atlantic, Equatorial Pacific, and the Italian Apennines yield a well-dated and coherent pattern of 187Os/188Os variation from the late Eocene to the early ...
Now showing items 1-4 of 4