noaa-ocean-2611
SE Atlantic Late Miocene Carbonate Crash and Biogenic Bloom Data from cruise ODP175
Diester-Haass, L.; Meyers, P.A.; Bickert, T.
SE Atlantic Late Miocene Carbonate Crash and Biogenic Bloom Data from cruise ODP175
2004-07-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/2611
Investigator
L.
Diester-Haass
Investigator
P.A.
Meyers
Investigator
T.
Bickert
earth science
paleoclimate
paleoceanography
calcium carbonate,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,accum. rate
earth science
paleoclimate
paleoceanography
delta 18O,benthic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
total benthic foraminifers,sediment,null,count per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
identified foraminifer,sediment,null,count per square centimeter per kiloyear,null,paleoceanography,null,null,N,Uvingerina sp. accumulation rate
earth science
paleoclimate
paleoceanography
organic carbon,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,mass accumulation rate
earth science
paleoclimate
paleoceanography
sand,sediment,null,percent,null,paleoceanography,null,null,N,>63 microns
earth science
paleoclimate
paleoceanography
total benthic foraminifers,sediment,null,count per gram,null,paleoceanography,null,null,N,>500 um fraction
earth science
paleoclimate
paleoceanography
identified foraminifer,sediment,null,count per gram,null,paleoceanography,null,null,N,Uvigerina sp.
earth science
paleoclimate
paleoceanography
age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
calcium carbonate,sediment,null,percent,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
organic carbon,sediment,null,percent,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
total benthic foraminifers,sediment,null,dimensionless,null,paleoceanography,null,null,N,benthic/(planktic plus benthic foraminifera)
earth science
paleoclimate
paleoceanography
sand,sediment,null,percent,null,paleoceanography,null,null,N,"Shelf-derived particles (>63 micron) including coarse mollusc debris, relict shell material, decapods, phosphorite"
earth science
paleoclimate
paleoceanography
pyrite,sediment,null,percent,null,paleoceanography,null,null,N,>63 microns
earth science
paleoclimate
paleoceanography
total benthic foraminifers,sediment,null,count per square centimeter per kiloyear,null,paleoceanography,null,null,N,accum. rate
earth science
paleoclimate
paleoceanography
sedimentation rate,null,null,centimeter per kiloyear,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
glauconite,sediment,null,percent,null,paleoceanography,null,null,N,40-63 micron fraction
earth science
paleoclimate
paleoceanography
mineral matter,sediment,null,percent,null,paleoceanography,null,null,N,40-63 micron fraction; terrigenous sediment identified at grain level
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
fish index,sediment,null,percent,null,paleoceanography,null,null,N,fish debris
earth science
paleoclimate
paleoceanography
total benthic foraminifers,sediment,null,count per gram,null,paleoceanography,null,null,N,125-250 um fraction
earth science
paleoclimate
paleocean
geochemistry
earth science
paleoclimate
paleocean
oxygen isotopes
earth science
paleoclimate
paleocean
lithology
earth science
paleoclimate
paleocean
physical properties
earth science
paleoclimate
paleocean
population abundance
earth science
paleoclimate
paleocean
age control
geoscientificInformation
14476448 14C yr BP
2894600 14C yr BP
14476448 cal yr BP
2894600 cal yr BP
Complete
-31.55
-29.37
13.6
15.67
-1713
-781
Ocean
Atlantic Ocean
South Atlantic Ocean
ODP1087>LATITUDE -31.47>LONGITUDE 15.32
Ocean
Atlantic Ocean
South Atlantic Ocean
ODP1086>LATITUDE -31.55>LONGITUDE 15.67
Ocean
Atlantic Ocean
South Atlantic Ocean
ODP 1085>LATITUDE -29.37>LONGITUDE 13.6
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Diester-Haass, L., P.A. Meyers, and T. Bickert. 2004. Carbonate crash and biogenic bloom in the late Miocene: Evidence from ODP sites 1085, 1086, and 1087 in the Cape Basin, southeast Atlantic Ocean. Paleoceanography 19(1):PA1007.
Middle/late Miocene to early Pliocene sedimentary sequences along the continental margin of southwest Africa have changes that correspond to the carbonate crash (12-9 Ma) and biogenic bloom events (~7-4 Ma) described in the equatorial Pacific by Farrell et al. [1995]. To explore the origins of these changes, we analyzed the carbon and coarse fraction contents of sediments from ODP Sites 1085, 1086, and 1087 at a time resolution of 5 to 30 kyr. Several major drops in CaCO3 concentration between 12 and 9 Ma are caused by dilution from major increases in clastic input from the Oranje River during global sea level regressions. Abundant pyrite crystals and good preservation of fish debris reflect low oxygenation of bottom/pore waters. Regional productivity was enhanced during the time equivalent to the carbonate crash period. Higher benthic/planktic foraminiferal ratios indicate that CaCO3 dissolution at Site 1085 peaked between 9 to 7 Ma, which was after the global carbonate crash. This period of enhanced dissolution suggests that Site 1085 was located within a low-oxygen water mass that dissolved CaCO3 more easily than North Atlantic Deep Water, which began to bathe this site at 7 Ma. At 7 to 6 Ma, the onset of the biogenic bloom, increases and variations in total organic carbon and benthic foraminiferal accumulation rates show that paleoproductivity increased significantly above values observed during the carbonate crash period and fluctuated widely. We attribute the late Miocene paleoproductivity increase off southwest Africa to ocean-wide increases in nutrient supply and delivery.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2004
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1085-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1087c-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1086a-tab.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11