Catastrophic Events and Mass Extinctions

Catastrophic Events and Mass Extinctions

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... 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


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