Impacts on the <scp>CV</scp> parent body: A coordinated, multiscale fabric analysis of the Allende meteorite

Abstract Evidence of impact‐induced compaction in the carbonaceous chondrites, specifically CMs and CVs, has been widely investigated utilizing microscopy techniques impact experiments. Here, we use high‐resolution photography large area electron backscattered diffraction (EBSD) mapping analyses tandem, to explore effects at both meso‐ micro‐scales Allende CV3.6 chondrite. Macro‐scale images a ~25 cm slab captured meso‐scale features including calcium‐aluminum inclusions (CAIs) chondrules. CAIs have long‐axis shape‐preferred orientation (SPO). Examination such thin section revealed same trend. Matrix grains from this display amount heterogeneity petrofabric orientation; microscale, high‐resolution, EBSD ~300,000 olivine matrix grains; map across an elongate CAI; series maps around two chondrules CAI crystallographic preferred orientations (CPOs) different directions. Finally, internal were found demonstrate weak lineation CPO, first detection possible “flow.” All results are consistent with multiple, gentle impacts on parent body causing hemispheric compaction. The larger, more resistant components likely compressed oriented by earlier impacts, region petrofabrics “flow” occurred during subsequent impacts. Meteoritic respond differently events, consequently, it is that would retain evidence events angles.