... were analyzed by biostratigraphic, mineralogical, geo- chemical, and magnetic methods using the following: (1) manual, ... A combination of X-ray diffractometry, chemical analysis, microscopy, and scanning electron microscopy (SEM), isotope ... fractions was determined by X-ray diffraction analysis with an automatic powder diffractometer (Philips Xa#39;Pert-MPD). ... JSM-6400, equipped with a KEVEX energy-dispersive system [EDS], operating conditions: 15 kV, 1 nA beam current).
|Title||:||Catastrophic Events and Mass Extinctions|
|Author||:||Christian Koeberl, Kenneth G. MacLeod|
|Publisher||:||Geological Society of America - 2002|