Shock Recovery With Decaying Compressive Pulses: Shock Effects in Calcite (CaCO ₃ ) Around the Hugoniot Elastic Limit

Shock metamorphism of minerals in meteorites provides insights into the ancient Solar System. Calcite is an abundant aqueous alteration mineral carbonaceous chondrites. Return samples from asteroids Ryugu and Bennu are expected to contain calcite-group minerals. Although shock silicates has been well studied, such data for limited. Here, we investigated effects calcite with marble using impact experiments at Planetary Exploration Research Center Chiba Institute Technology. We produced decaying compressive pulses a smaller projectile than target. A metal container facilitates recovery sample that retains its pre-impact stratigraphy. estimated peak pressure distributions iSALE physics code. The capability this method produce shocked grains have experienced different degrees single experiment advantage over conventional uniaxial experiments. were by polarizing microscopy X-ray diffraction analysis. found more half exhibit undulatory extinction when exceeds 3 GPa. This one order magnitude higher Hugoniot elastic limit (HEL) marble, but it close HEL crystal, suggesting records dislocation-induced plastic deformation crystal. Finally, propose strategy re-construct maximum depth meteorite parent body, if identified chondrites and/or return Bennu.