Late Cretaceous chronology of large, rapid sea-level changes: Glacioeustasy during the greenhouse world

Miller, K. G.; Sugarman, P. J.; Browning, J. V.; Kominz, M. A.; Hernandez, J. C.; Olsson, R. K.; Wright, J. D.; Feigenson, M. D.; Van Sickel, W.

Abstract:

We provide a record of global sea-level (eustatic) variations of the Late Cretaceous (99-65 Ma) greenhouse world. Ocean Drilling Program Leg 174AX provided a record of 11-14 Upper Cretaceous sequences in the New Jersey Coastal Plain that were dated by integrating Sr isotopic stratigraphy and biostratigraphy. Backstripping yielded a Late Cretaceous eustatic estimate for these sequences, taking into account sediment loading, compaction, paleowater depth, and basin subsidence. We show that Late Cretaceous sea-level changes were large (>25 m) and rapid (??? m.y.), suggesting a glacioeustatic control. Three large ??18O increases are linked to sequence boundaries (others lack sufficient ??18O data), consistent with a glacioeustatic cause and with the development of small (<106 km3) ephemeral ice sheets in Antarctica. Our sequence boundaries correlate with sea-level falls recorded by Exxon Production Research and sections from northwest Europe and Russia, indicating a global cause, although the Exxon record differs from backstripped estimates in amplitude and shape.

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Article

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70025812

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Miller, K. G.; Sugarman, P. J.; Browning, J. V.; Kominz, M. A.; Hernandez, J. C.; Olsson, R. K.; Wright, J. D.; Feigenson, M. D.; Van Sickel, W.

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588

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English

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Geology

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Late Cretaceous chronology of large, rapid sea-level changes: Glacioeustasy during the greenhouse world; 2003; Article; Journal; Geology; Miller, K. G.; Sugarman, P. J.; Browning, J. V.; Kominz, M. A.; Hernandez, J. C.; Olsson, R. K.; Wright, J. D.; Feigenson, M. D.; Van Sickel, W.