Shock physics mesoscale modeling of shock stage 5 and 6 in ordinary and enstatite chondrites

Be-B IN ENSTATITE AND ORDINARY CHONDRITES: A PRELIMINARY STUDY

: metadiscourse in introduction sections of applied linguistics and physics research articles: exploring variation in frequency and type

abstract in written mode of language, metadiscourse markers are used commonly to help writers in general and academic writers in particular to produce coherent and professional texts. the purpose of the present study was to compare introduction sections of applied linguistics and physics articles regarding their use of interactive and interactional metadiscourse markers based on the model pro...

Physics and Modeling of Shock-Wave Dispersion in Heterogeneous Composites

Wave dispersion in heterogeneous solids due to scattering within the microstructure is examined. Underlying physics is explored. A theory based on a quasi-harmonic normal model description of the scattering wave energy is developed and compared with phenomenological nonlinear anelasticity models of wave propagation in heterogeneous media.

Ar-Ar DATING OF SHOCK-MELTED ORDINARY CHONDRITES: CHRONOLOGY OF ASTEROIDAL

Ar-Ar dating of 13 samples from 5 shock-melted ordinary chondrites is used to determine the timing of impacts in the Main Asteroid Belt. Three samples of the H impact melt LAP 02240 have welldefined plateaus at ~3900 Ma, consistent with the “lunar cataclysm” and many other meteorite impact ages. The LL impact melt breccia NWA 1701 records an impact at ~1000 Ma, in which melt was more thoroughly...

The Physics of Shock Waves and Experimental Shock Metamorphism: Dieter

Introduction: The cooperation between Dieter Stöffler and Ernst-Mach-Institut (EMI) [1-14] goes back to 1972 when first experiments were performed to shock single crystal feldspars by steel plates that were accelerated with an explosive plane wave generator [1,7]. The shock experiments initiated a series of studies that required versatile and reliable test methods for the generation of Hugoniot...