Shaking and splashing—A case study of far‐field effects of the Mjølnir asteroid impact on depositional environments in the Barents Sea

The Mjølnir impact crater in the Norwegian Barents Sea features among 20 largest craters listed Earth Impact Database. is dated to 142 ± 2.6 Ma, corresponding closely Jurassic/Cretaceous boundary Boreal stratigraphy. Multidisciplinary studies carried out over last three decades have suggested that up 40 km wide was created by a 1–3 diameter impactor colliding with shallow epicontinental sea, causing regional havoc and ecological crisis followed its wake. Only minor evidence for consequences of surrounding depositional basins has been documented so far. This study describes large submarine slump penetrated hydrocarbon exploration well 7121/9-1, located southern Hammerfest Basin approximately 350 away from site. black shale drape, which contains characteristic impact-related biotic assemblages potential ejecta material. precise dating enables us associate large-scale fault movements footwall collapse along basin-bounding Troms-Finnmark Fault Complex, we conclude were caused shock waves passage associated tsunami trains. draping interpreted represent significant reworking material contemporary seabed tsunamis currents set impact.