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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
Miocene Sequence Biostratigraphy of the Northern Gulf of Mexico
Mark M. Jiang
ABSTRACT
Calcareous nannofossil abundance and diversity curves have been successfully used for biostratigraphic sequence modeling in the Gulf of Mexico Miocene. Well data from the trend reveal that floral pulses characterized by high abundance and diversity correspond to regional foraminiferal tops. These pulses vary greatly in magnitude in the studied wells, and when plotted on a time track show a sinuous pattern imaging the third order cycles of Haq et al. (1988). Results indicate that floral pulses of regional significance in the Miocene of the Gulf of Mexico are a counterpart of transgressive systems tracts of fourth order sequences. Correlations of these pulses, foraminiferal tops, and eustatic cycle curves, first proposed by Jiang and Watkins (1992), are updated in this study. The results link biostratigraphy with sequence stratigraphy and will assist in integrating micropaleontologic data in sequence stratigraphic modeling.
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