The Bartonian unit stratotype (S. England): Assessment of its correlation problems and potential

The problems of correlation of strata belonging to the unit Bartonian Stage in its type area of the Hampshire Basin, UK, are reviewed. These problems involve not only correlation outside the Hampshire Basin, through biostratigraphy and magnetostratigraphy, but also within the basin in terms of under...

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Bibliographic Details
Published in:Proceedings of the Geologists' Association 2019-04, Vol.130 (2), p.157-169
Main Authors: Hooker, Jerry J., King, Chris
Format: Article
Language:English
Subjects:
Biostratigraphy
Calcareous nannoplankton
Dinoflagellates
foraminifera
Magnetostratigraphy
Mammals
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Summary:The problems of correlation of strata belonging to the unit Bartonian Stage in its type area of the Hampshire Basin, UK, are reviewed. These problems involve not only correlation outside the Hampshire Basin, through biostratigraphy and magnetostratigraphy, but also within the basin in terms of understanding patterns of facies distributions and reliability of local biostratigraphy. On the basis of a combination of calcareous nannoplankton, dinoflagellate cyst and magnetostratigraphic evidence, the base of the type unit Bartonian lies within Chron C18r. However, no reliable biostratigraphic indicators have yet been found to allow a more precise correlation of the base. It is suggested that more detailed microfossil and palaeomagnetic sampling at key sites could resolve these problems in order to help further the quest for an appropriate Global Stratotype Section and Point (GSSP) for the Bartonian Stage.
ISSN:0016-7878
DOI:10.1016/j.pgeola.2018.08.005