The Resource Surface and deep water circulation in late Cretaceous North Atlantic greenhouse ocean, by Carolina Isaza Londoño, (electronic resource)

Surface and deep water circulation in late Cretaceous North Atlantic greenhouse ocean, by Carolina Isaza Londoño, (electronic resource)

Label
Surface and deep water circulation in late Cretaceous North Atlantic greenhouse ocean
Title
Surface and deep water circulation in late Cretaceous North Atlantic greenhouse ocean
Statement of responsibility
by Carolina Isaza Londoño
Creator
Contributor
Thesis advisor
Subject
Genre
Language
eng
Summary
This research provides the first of its kind empirical data regarding the evolution of Maastrichtian surface to deep ocean circulation in the North Atlantic. Differences in foraminiferal abundances and oxygen and carbon isotopic ratios of bulk carbonate and foraminifera between two Ocean Drilling Program Sites in the subtropical North Atlantic indicate a sharp water mass boundary was a relatively stable and persistent feature of the Maastrichtian North Atlantic despite significant regional warming across the interval. Neodymium isotopes of fish debris, on the other hand, indicate significant changes in intermediate and deep water circulation through the Late Cretaceous and especially during the Maastrichtian. During the Cenomanian-Campanian interval at least three different deep water masses were active in the North Atlantic including one formed by downwelling of warm saline waters in the Demerara Rise region. During the Campanian-Maastrichtian, low-latitude-sourced waters seem to have reached abyssal depths, but from the mid-Maastrichtian on, this water mass seems to have declined in importance. From the mid-Danian on, we found evidence for only one water mass (plausibly sourced in the northern North Atlantic, as it is today) at bathyal and abyssal depths in the North Atlantic. Our data demonstrate that surface and, especially, intermediate and deep water circulation patterns are an important (and measurable) variable that helps determine greenhouse temperature distributions on regional and global scales
Cataloging source
MUU
http://library.link/vocab/creatorName
Isaza Londoño, Carolina
Degree
Ph. D.
Dissertation year
2009.
Granting institution
University of Missouri--Columbia
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/relatedWorkOrContributorDate
1964-
http://library.link/vocab/relatedWorkOrContributorName
MacLeod, Kenneth G.
http://library.link/vocab/subjectName
  • Meridional overturning circulation
  • Ocean circulation
  • Maastricht (Netherlands)
  • North Atlantic Ocean
  • Water temperature
  • Foraminifera
  • Paleoceanography
  • Campanian-Maastrichtian boundary
Target audience
specialized
Label
Surface and deep water circulation in late Cretaceous North Atlantic greenhouse ocean, by Carolina Isaza Londoño, (electronic resource)
Instantiates
Publication
Note
  • Title from PDF of title page (University of Missouri--Columbia, viewed on September 15, 2010)
  • The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file
  • Dissertation advisor: Dr. Kenneth G. MacLeod
  • Vita
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
696016671
Extent
1 online resource (x, 154 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations (some color).
Specific material designation
remote
System control number
(OCoLC)696016671
Label
Surface and deep water circulation in late Cretaceous North Atlantic greenhouse ocean, by Carolina Isaza Londoño, (electronic resource)
Publication
Note
  • Title from PDF of title page (University of Missouri--Columbia, viewed on September 15, 2010)
  • The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file
  • Dissertation advisor: Dr. Kenneth G. MacLeod
  • Vita
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
696016671
Extent
1 online resource (x, 154 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations (some color).
Specific material designation
remote
System control number
(OCoLC)696016671

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