Characteristics in naturally and experimentally shocked chondrites: A clue to P-T conditions of impacted asteroids

摘要

The aim of this study is to compare the experimentallyshock-induced features with those in naturally shocked chondrites andto test the feasibility of experimentally calibrating naturallyinduced features in shocked H- and L-chondrites. Samples of the Jilinchondrite (H5) were experimentally shock-loaded at the following peakpressures: 12, 27, 39, 53, 78, 83, 93 and 133 Gpa respectively.Chondritic melts were first obtained at P>78 Gpa and more than 60/100melting was achieved at P?133 GPa. No high-pressure phases wereobserved in any of the shocked samples, neither in the deformed norin the molten regions.