An unusual sequence of rocks from the chalk in the Raesfeld area – lithology and stratigraphy of the map drilling Raesfeld KB 4206/1005

As part of the geoscientific survey of the Geological Service NRW, the mapping hole Raesfeld KB 4206/1005 was drilled as a core drilling. The litho- and biostratigraphic machining of the drilling profile is presented.作为北威州地质调查局（Geological Service NRW）地质科学调查的组成部分，编号为Raesfeld KB 4206/1005的填图钻孔采用岩心钻探工艺施工完成。本文呈现了该钻孔剖面的岩性地层学与生物地层学编录成果。