Nilsen, E. B. et al. (2003): Paleoproductivity, nutrient burial, climate change and the carbon cycle in the western equatorial Atlantic across the Eocene/Oligocene boundary
Leg/Site/Hole:
Related Expeditions:
ODP 154
Identifier:
ID:
2004-040720
Type:
georefid
ID:
10.1029/2002PA000804
Type:
doi
Creator:
Name:
Nilsen, E. B.
Affiliation:
University of California at Santa Cruz, Ocean Sciences/Institute of Marine Sciences, Santa Cruz, CA, United States
Role:
author
Name:
Anderson, L. D.
Affiliation:
Role:
author
Name:
Delaney, M. L.
Affiliation:
Role:
author
Identification:
Title:
Paleoproductivity, nutrient burial, climate change and the carbon cycle in the western equatorial Atlantic across the Eocene/Oligocene boundary
Year:
2003
Source:
Paleoceanography
Publisher:
American Geophysical Union, Washington, DC, United States
Volume:
18
Issue:
3
Pages:
Abstract:
Paleoproductivity, nutrient burial, and carbon cycling were investigated across the Eocene/Oligocene (E/O) boundary at Ocean Drilling Program Site 925 on the Ceara Rise in the western equatorial Atlantic. Downcore bulk sediment records of biogenic barium, total reactive phosphorus, biogenic silica, and calcium carbonate are interpreted to represent export production, net nutrient burial, biogenic opal production, and inorganic carbon burial, respectively. Biogenic silica production or preservation increased after the Eocene/Oligocene boundary to a higher baseline, although overall productivity and nutrient burial did not increase, based on barium and reactive phosphorus records. (mod. journ. abst.)
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:7.0000 West:-180.0000 East:
180.0000 South:-90.0000
Keywords: Stratigraphy; Atlantic Ocean; biochemistry; biogenic processes; C-13/C-12; carbon; carbon cycle; Ceara Rise; Cenozoic; cores; Eocene; Equatorial Atlantic; Foraminifera; framework silicates; geochemical cycle; geochemistry; hydrochemistry; ice; ice volume; Invertebrata; isotope ratios; isotopes; Leg 154; lower Oligocene; marine sediments; microfossils; North Atlantic; nutrients; O-18/O-16; Ocean Drilling Program; ODP Site 925; Oligocene; opal; oxygen; paleoclimatology; Paleogene; polar regions; Protista; sea water; sediments; silica minerals; silicates; Southern Ocean; stable isotopes; stratigraphic boundary; Tertiary; upper Eocene; West Atlantic;
.