Cenomanian 2: Difference between revisions
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The 'M3' limestone of Gale (1989) marks the junction of Cenomanian 1 and 2 (incorrectly stated as 'M4' in Gale et al., 1999). The top of this limestone bed is a non-sequence, representing a sequence boundary, and it is overlain by phosphatised intraclasts and glauconite grains, representing a transgressive systems tract (Gale et al., 1999). Above this is a thin succession representing a highstand. | The 'M3' limestone of Gale (1989) marks the junction of Cenomanian 1 and 2 (incorrectly stated as 'M4' in Gale et al., 1999). The top of this limestone bed is a non-sequence, representing a sequence boundary, and it is overlain by phosphatised intraclasts and glauconite grains, representing a transgressive systems tract (Gale et al., 1999). Above this is a thin succession representing a highstand. | ||
Latest revision as of 08:05, 2 October 2013
The 'M3' limestone of Gale (1989) marks the junction of Cenomanian 1 and 2 (incorrectly stated as 'M4' in Gale et al., 1999). The top of this limestone bed is a non-sequence, representing a sequence boundary, and it is overlain by phosphatised intraclasts and glauconite grains, representing a transgressive systems tract (Gale et al., 1999). Above this is a thin succession representing a highstand.
References
GALE, A S. 1989. Field meeting at Folkestone Warren, 29th November, 1987. Proceedings of the Geologists' Association, 100, 73-82.
GALE, A S, HANCOCK, J M & KENNEDY, W J. 1999. Biostratigraphical and sequence correlation of the Cenomanian successions in Mangyshlak (W. Kazakhstan) and Crimea (Ukraine) with those in southern England. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, 69, 67-86.