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

Geology

By:
, , , , , , , , and
DOI: 10.1130/0091-7613(2003)031<0585:LCCOLR>2.0.CO;2

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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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Late Cretaceous chronology of large, rapid sea-level changes: Glacioeustasy during the greenhouse world
Series title:
Geology
DOI:
10.1130/0091-7613(2003)031<0585:LCCOLR>2.0.CO;2
Volume
31
Issue:
7
Year Published:
2003
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geology
First page:
585
Last page:
588