Qian Y.; Engel M.H.; Goodfriend G.A.; Macko S.A.(1995)
Amino acid abundances in molecular weight fractions (separated by ultrafiltration) of artificially aged carbonate shells and fossil shells are reported. Hydrolyzable amino acids were primarily concentrated in the The δ13C ...
Hydrogen isotope exchange between tourmaline and water has been studied experimentally over the temperature range of 800-350°C. The hydrogen isotope equilibrium fractionation factor between tourmaline and water may be ...
By combining synchrotron X-ray standing wave (XSW) measurements with synchrotron X-ray reflectivity measurements, we have determined: (1) the precise three-dimensional location within the calcite unit cell of submonolayer ...