@article{fdi:010068669, title = {{M}orphometric analysis and classification of the three-dimensional geometry of shatter cones}, author = {{B}aratoux, {D}avid and {B}ouley, {S}. and {R}eimold, {W}. {U}. and {B}aratoux, {L}enka}, editor = {}, language = {{ENG}}, abstract = {{S}hatter cones are curved fractures decorated with divergent striations that are exclusively associated with impact metamorphism. {T}he terminology "cone" was chosen from the observation of complete or near-complete, roundish, axisymmetric objects with a well-defined apex/apical area. {I}t also imprecisely extends to the curved or subplanar fractures decorated with striations commonly observed at impact sites. {T}he geometry of these objects is therefore highly variable but its significance was never addressed due to the lack of appropriate data. {H}ere, we apply two methods to derive shape models of shatter cones. {T}he first one is based on images acquired using a commercial camera and may be applied on large samples in the field. {T}he second one uses an articulated arm equipped with a digital laser scanner and produces high-resolution and precision shape models of hand-sized samples. {T}he analysis of 20 shape models of shatter cones from nine different impact sites indicates that the surface of shatter cones may be described by quadric surfaces and are generally consistent with hyperboloids, whereas occurrence of paraboloid objects cannot be ruled out. {T}he surface characteristics are generally not consistent with the mathematical definition of a cone. {T}he value of these shape models to discriminate between the different hypotheses of formation of shatter is still limited, as it remains to be resolved which type of surface pertains to which hypothesis. {T}his requires theoretical developments, and experimental or numerical simulations of the propagation of tensile fractures associated with shock waves.}, keywords = {}, booktitle = {{S}hatter cones : nature and genesis}, journal = {{M}eteoritics and {P}lanetary {S}cience}, volume = {51}, numero = {8 ({N}o sp{\'e}cial)}, pages = {1460--1476}, ISSN = {1086-9379}, year = {2016}, DOI = {10.1111/maps.12610}, URL = {https://www.documentation.ird.fr/hor/fdi:010068669}, }