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The AAPG/Datapages Combined Publications Database

GCAGS Transactions

Abstract


Gulf Coast Association of Geological Societies Transactions
Vol. 43 (1993), Pages 137-143

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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