Acta Geologica Polonica, Vol. 49 (1999), No.3, pp. 175-213 The Upper Cretaceous succession (Cenomanian Santonian) of the Staffhorst Shaft, Lower Saxony, northern Germany: integrated biostratigraphic, lithostratigraphic and downhole geophysical log data BIRGIT NIEBUHR 1, REINHARD BALDSCHUHN2, GUNDOLF ERNST3, IRENEUSZ WALASZCZYK4, WOLFGANG WEISS5 & CHRISTOPHER J. WOOD6 I Institut fiir Palaontologie, Bayerische lulills-Maximilians-Universitat, Pleicherwall I, D-97070 Wiirzburg, Germany. E-mail:
[email protected] 2 Ernst-Pfliiger-Str. 7, D-30938 Burgdorf-Wettmar, Germany 3 Institutfiir Paliiontologie, Freie Universitat Berlin, Malteser Str. 74-100, D-12249 Berlin, Germany. E-mail:
[email protected] 4 Institute of Geology, University of Warsaw, AI. Zwirki i Wigury 93, PL-02-089 Warszawa, Poland. E-mail:
[email protected] 5 Bundesanstalt fur Geowissenschaften und Rohstoffe, Stilleweg 2, D-30655 Hannover, Germany. E-mail:
[email protected] 6 Scops Geological Services Ltd., 20 Temple Road, Croydon, Surrey CRO I HT, United Kingdom. ABSTRACT: NIEBUHR, B., BALDSCHUHN, R., ERNST,G., WALASZCZYK, 1., WEISS, W. & WOOD, C.J. 1999. The Upper Cretaceous succession (Cenomanian ~ Santonian) of the Staffhorst Shaft, Lower Saxony, northern Germany: integrated biostratigraphic, lithostratigraphic and downhole geophysical log data. Acta Geologica Polonica, 49 (3),175-213. Warszawa. The Cenomanian to Santonian succession of the Staffhorst shaft, ca. 50 km south of Bremen, because of its struc tural position in the northel11 Gelman Upper Cretaceous basin, is intermediate in character and fossil content between the pelagic sediments characterizing the Pompeckj Block in the north and the proximal sediments of the Lower Saxony Block in the south. The biostratigraphic subdivision of the shaft is based on inoceramids, echi noids, belemnites and foraminifera.