Browsing by Author "Young E.D."
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Browsing by Author "Young E.D."
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Young E.D. (2000)Homogeneity in 41K/39K among Earth, Moon, chondrites, and achondrites has been cited as evidence that evaporation of protoplanetary dust could not have caused variability in the mass of moderately volatile elements among ...
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Jones A.M.; O'Connell T.C.; Young E.D.; Scott K.; Buckingham C.M.; Iacumin P.; Brasier M.D. (2001)Data presented herein form part of a pilot study to reconstruct palaeoenvironment using isotopic data from 200 ka collagen and skeletal remains. To date such a study has only been possible on materials of up to 120 ka, due ...
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Young E.D.; Zhang K.K.; Schubert G. (2003)The critical Rayleigh number for convective flow of pore water through a permeable spherical body is derived. The result affords constraints on carbonaceous chondrite planetesimal sizes and rates of heat production. If the ...
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Jones A.M.; Iacumin P.; Young E.D. (1999)The viability of oxygen isotope analysis of tooth enamel by UV laser ablation and fluorination has been demonstrated by comparison with the Ag3PO4 extraction method. In-situ analyses by UV laser fluorination using both ...
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Rumble D.; Farquhar J.; Young E.D.; Christensen C.P. (1997)In situ oxygen isotope analysis of silicate minerals has been validated by interlaboratory calibration using an excimer laser (KrF fill gas, 248 nm), F2 gas fluorinating reagent, and O2 gas as mass spectrometer analyte. A ...
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Young E.D.; Fogel M.L.; Rumble D.; Hoering T.C. (1998)Experiments were performed to test the viability of using isotope-ratio-monitoring gas-chromatography mass spectrometry (irm-GCMS) as a means for isotopic analysis of nanomole quantities of O2 released in a vacuum system ...
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Young E.D.; Galy A.; Nagahara H. (2002)The mass-dependent fractionation laws that describe the partitioning of isotopes are different for kinetic and equilibrium reactions. These laws are characterized by the exponent relating the fractionation factors for two ...
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Young E.D.; Ash R.D.; Galy A.; Belshaw N.S. (2002)First results from a new UV laser ablation MC-ICPMS method for measuring Mg isotope ratios in situ in meteoritical materials show that there are mass-dependent variations in δ25Mg and δ26Mg up to 1.5 %% per amu in chondrules ...
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Young E.D.; Nagahara H.; Mysen B.O.; Audet D.M. (1998)Experiments demonstrate that partial evaporation of solid silica at 1600-1700°C and low pressure (10-9 bar) results in enrichment of 18O/16O and 17O/16O in solid products. Evaporative residues formed in H2 or N2 gas at ...
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Young E.D.; Galy A. (2004)Magnesium is second only to oxygen in abundance among the rock-forming elements and is an important element in the oceans and in hydrological and biological systems. Differences in the relative abundances of its three ...
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Young E.D.; Coutts D.W.; Kapitan D. (1998)Analyses of 18O/16O and 17O/16O in silicate and oxide minerals by UV laser ablation of 100 x 80 x 50 μm sample pits combined with irm-GCMS yield precision and accuracy similar to that of conventional methods. This represents ...
Now showing items 1-11 of 11