The Bartonian unit stratotype (S. England): Assessment of its correlation problems and potential |
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| Authors: | Jerry J Hooker Chris King |
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| Institution: | Department of Earth Sciences, Natural History Museum, Cromwell Road, London, SW7 5BD, United Kingdom |
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| Abstract: | 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. |
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| Keywords: | Biostratigraphy Calcareous nannoplankton Dinoflagellates foraminifera Magnetostratigraphy Mammals |
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