Southern Region Chalk Group Lithostratigraphy: Bristow et al. (1997) - Glauconitic Marl: Difference between revisions

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See:                      Glauconitic Marl (Traditional Classification)
See:                      Glauconitic Marl (Traditional Classification)


[[Category:Southern Region Chalk Group Lithostratigraphy: Bristow et al. (1997) | 02]]
[[Category:Southern Region Chalk Group Lithostratigraphy: Bristow et al. (1997) | 002]]

Latest revision as of 11:21, 7 October 2013

Where present, this unit forms the base of the Chalk Group. It is mostly synonymous with the Glauconitic Marl of traditional classifications, except that in some areas (e.g. south-west Wiltshire), strata traditionally regarded as Glauconitic Marl are actually glauconitic calcareous sandstones, and have been re-classified as Upper Greensand (Bristow et al., 1997). The Glauconitic Marl is absent in the Shaftesbury district, over the Mid Dorset Swell and in south-east Devon (Bristow et al., 1997).

Macrofossil Biozonation: M. mantelli Zone, N. carcitanense Subzone

Correlation: see Correlation with other Southern Region Chalk Group classifications

see Correlation with other UK Chalk Group successions

References

BRISTOW, C. R., MORTIMORE, R. N. & WOOD, C. J. 1997. Lithostratigraphy for mapping the Chalk of southern England. Proceedings of the Geologists' Association, Vol. 108, 293-315.

See: Glauconitic Marl (Traditional Classification)