SEDIMENTARY STRUCTURES IN THE LOCKATONG FORMATION ADJACENT TO THE BASE OF THE PALISADES SILL
Two logs were made at locations where the original sedimentary structures are still visible. These included cross-bedded channel deposits with conglomerate at the base and more fine grained lake deposits. All have been metamorphosed, with hornfels facies present close to the contact with the sill. A third location 80 m to the south presented more distorted sediments. At the base of one channel deposit the sands were remobilized as the sill was intruded. This resulted in the formation of a clastic dike that cuts across the more fine grained horizontal beds at an angle.
Future work will focus on the mineralogical and geochemical changes that have taken place within the metamorphic aureole, investigating whether they are the same in areas where the sediments were remobilized as in areas where the original sedimentary structures are preserved.