Bice, Karen L. et al. (2003): Extreme polar warmth during the Cretaceous greenhouse? Paradox of the late Turonian delta (super 18) O record at Deep Sea Drilling Project Site 511
Leg/Site/Hole:
Related Expeditions:
DSDP 71
Identifier:
ID:
2006-012273
Type:
georefid
ID:
10.1029/2002PA000848
Type:
doi
Creator:
Name:
Bice, Karen L.
Affiliation:
Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States
Role:
author
Name:
Huber, Brian T.
Affiliation:
Smithsonian National Museum of Natural History, United States
Role:
author
Name:
Norris, Richard D.
Affiliation:
University of California at San Diego, United States
Role:
author
Identification:
Title:
Extreme polar warmth during the Cretaceous greenhouse? Paradox of the late Turonian delta (super 18) O record at Deep Sea Drilling Project Site 511
Year:
2003
Source:
Paleoceanography
Publisher:
American Geophysical Union, Washington, DC, United States
Volume:
18
Issue:
2
Pages:
Abstract:
Oxygen isotope data for upper Turonian planktonic foraminifera at Deep Sea Drilling Project Site 511 (Falkland Plateau) exhibit an excursion values coincident with the warmest tropical temperature estimates yet obtained for the open ocean. The lowest planktonic foraminifer delta (super 18) O values suggest that the upper ocean was as warm as 30-32 degrees C consistent with temperatures estimated from apparently coeval mollusc delta (super 18) O from nearby James Ross Island. Glassy textural preservation, a well-defined depth distribution in Site 511 planktonics, low sediment burial temperature, and lack of evidence of highly depleted pore waters argue against diagenesis as the cause of the very depleted planktonic values. (modified journ. abstr.)
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:-51.0017 West:-59.0000 East:
-46.5818 South:-64.3000
Keywords: Stratigraphy; algae; Antarctica; Atlantic Ocean; Cretaceous; Deep Sea Drilling Project; DSDP Site 511; Falkland Plateau; Foraminifera; global change; global warming; greenhouse effect; Invertebrata; IPOD; isotope ratios; isotopes; James Ross Island; Leg 71; Mesozoic; microfossils; Mollusca; nannofossils; O-18/O-16; oxygen; paleo-oceanography; paleoatmosphere; paleoclimatology; paleoecology; paleolatitude; paleomagnetism; paleosalinity; planktonic taxa; Plantae; Protista; reconstruction; South Atlantic; stable isotopes; subantarctic regions; Turonian; Upper Cretaceous; upper Turonian;
.