Shock metamorphism in plagioclase and selective amorphization

Shock Metamorphism in Impact Melt Rocks

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...

Shock Metamorphism of Martian Meteorites: New Data from Quantitative Shock

Introduction: The Martian origin of the group of SNCO’s comprising now 16 different meteorites is widely accepted [1]. The ejection of these meteorites from Mars requires an impact process which necessarily involves a certain level of shock metamorphism affecting the meteorites to get accelerated to Martian escape velocity. Previous studies [2 and ref. in 1] clearly showed that all 16 Martian m...

Lake Bosumtwi Drilling Project: Shock Metamorphism in Rocks from Core

General context: Shock barometry via petrographic analysis helps to understand cratering mechanics, especially mass movements in the central uplift, including its collapse in the late stage of cratering. Shock pressures recorded in lithologies of the central uplift may exceed 45 GPa, e.g., in the Vorotilovo core drilled into the center of the Puchezh-Katunki structure [1]. In other craters, sho...

Shock metamorphism of some minerals: Basic introduction and microstructural observations

Ke y w o r d s : impact features, shock metamorphism, shock waves, minerals, crystal structure, defects, experimental study Apollo Luna Earth N um be r of c ra te rs ( > 1 km ) pe r km 2 0.04