Ma P.; Aggrey K.; Tonzola C.; Schnabel C.; de Nicola P.; Herzog G.F.; Wasson J.T.; Glass B.P.; Brown L.; Tera F.; Middleton R.; Klein J.(2004)
By using accelerator mass spectrometry we have measured the 10Be concentrations of 86 Australasian tektites. Corrected to the time of tektite production ∼0.8 My ago, the 10Be concentrations (106 atom/g) range from 59 for ...
Alexander C.M.O.; Taylor S.; Delaney J.S.; Ma P.; Herzog G.F.(2002)
We have measured with an electron microprobe the Mg, Al, Si, Ca, Ti, Mn, and Fe contents of five strongly heated stony cosmic spherules (sCS) from the South Pole water well. We have also measured the isotopic compositions ...