Macropalaeontology of Asfordby boreholes : Holwell Works, Asfordby Hydro and Asfordby North Shaft

All three boreholes develop a good C. bipennis fauna indicating the horizon of the Kilburn. Below the Kilburn, Holwell Works Borehole shows the most complete sequence with the major Silesian marine bands developed down into the Marsdenian. Asfordby Hydro appears to have lost much of early Westphalian A and some late Namurian probably as a result of faulting. This borehole penetrates into the Kinderscoutian. Asfordby North Shaft gives tentative correlations below the Listeri MB horizon because only Lingula faunas are developed and much of the sequence below this level is expanded by igneous rocks.