Seismic Reflection Data Reveal the 3D Subsurface Structure of Pit Craters

Pit craters are quasi-circular depressions observed on rocky and icy planetary bodies, as well numerous asteroids. thought to form by overburden collapse into a subsurface cavity or volumetrically depleted zone. Importantly, the surface size distribution of pit may provide an important record otherwise inaccessible processes. However, because we cannot access many rely physical numerical models infer processes linked crater formation. Here, use 3D seismic reflection data quantify palaeosurface geometry 59 Late Jurassic buried depths ?3 km within sedimentary basin, offshore NW Australia. The typically funnel-like, with inverted conical upper section underlain pipe. depths, that is, height cone sections, correlate their plan-view length, consistent observations elsewhere; this trend is rendered less apparent later sediment-infilling. For first time, show some pipes connect underlying igneous dikes steeply dipping, likely dilatational portions normal faults. Although seemed have formed due faulting others dyking, they be differentiated based expression. Our also suggest not relate mechanical properties host material. Overall, conclude expression Earth other bodies diagnostic properties.