The information on this page is a summary description.
The full formal description is available here: Naninne Formation
Abbreviation
NAN
Parent unit
Child units
Lithological description
Laminated mudstone, generally calcareous, with some micaceous siltstone or fine sandstone intercalations (Michot, 1954; Martin, 1969a); laminated fine sandy or silty shale, blue-grey, green, greenish grey or brownish grey, resistant, often calcareous, with intercalations of micaceous clayey sandstone, fine beds of red shale; intercalations of olive green shale at the top; three (quartz)keratophyre levels occur in Neuville-sous-Huy (Maes et al., 1978).
Age
Graptolites of the Cyrtograptus murchisoni and the Monograptus riccartonensis biozones were described by Lassine (1913); the C. centrifugus biozone and other lower Wenlock graptolites assemblages were described by Rickards (in Maes et al., 1978). Samples from Neuville-sous-Huy contain the typical chitinozoans assemblage of the M. margaritana global biozone, however without the type species, confirming the early Wenlock age (Verniers, unpublished data).
Thickness
±50 m (Michot, 1957); >90 m (Vandevelde, 1976 ms; Maes et al., 1978).
Area of occurrence
Condroz inlier.
Type locality
Village of Naninne, the road to Sart-Bernard (Michot, 1934).
Alternative names
Assise de Naninne.
Authors
Verniers, J., Herbosch, A., Vanguestaine, M., Geukes, F., Delcambre, B., Pingot, J.-L., Belanger, I., Hennebert, M., Debacker, T., Sintubin, M. & De Vos, W.
Date
01/01/2001
Cite as
Verniers, J., Herbosch, A., Vanguestaine, M., Geukes, F., Delcambre, B., Pingot, J.-L., Belanger, I., Hennebert, M., Debacker, T., Sintubin, M. & De Vos, W., 2001. The Naninne Formation, 01/01/2001. National Commission for Stratigraphy Belgium. https://ncs.naturalsciences.be/lithostratigraphy/Naninne-Formation
