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  • Data  (20)
  • 2005-2009  (20)
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  • 1
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    Strontium and oxygen isotope data for DSDP Hole 44-390A and ODP Leg 171 holes (2005)
    PANGAEA
    In:  Supplement to: MacLeod, Kenneth G; Huber, Brian T; Isaza-Londoño, Carolina (2005): North Atlantic warming during global cooling at the end of the Cretaceous. Geology, 33(6), 437-440, https://doi.org/10.1130/G21466.1
    Details
    Publication Date: 2024-01-09
    Description: Differences in regional responses to climate fluctuations are well documented on short time scales (e.g., El Niño-Southern Oscillation), but with the exception of latitudinal temperature gradients, regional patterns are seldom considered in discussions of ancient greenhouse climates. Contrary to the expectation of global warming or global cooling implicit in most treatments of climate evolution over millions of years, this paper shows that the North Atlantic warmed by as much as 6°C (1.5% decrease in d18O values of planktic foraminifera) during the Maastrichtian global cooling interval. We suggest that warming was the result of the importation of heat from the South Atlantic. Decreasing North Atlantic d18O values are also associated with increasing gradients in planktic d13C values, suggesting increasing surface-water stratification and a correlated strengthening of the North Atlantic Polar Front. If correct, this conclusion predicts arctic cooling during the late Maastrichtian. Beyond implications for the Maastrichtian, these data demonstrate that climate does not behave as if there is a simple global thermostat, even on geologic time scales.
    Keywords: 171-1049C; 171-1050C; 171-1052E; 44-390A; Blake Nose, North Atlantic Ocean; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Joides Resolution; Leg171B; Leg44; North Atlantic; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 2
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    Late Albian foraminiferal carbon and oxygen isotope data and biostratigraphic datums from ODP holes 171-1050C and 171-1052E (2008)
    PANGAEA
    In:  Supplement to: Petrizzo, Maria Rose; Huber, Brian T; Wilson, Paul A; MacLeod, Kenneth G (2008): Late Albian paleoceanography of the western subtropical North Atlantic. Paleoceanography, 23(1), PA1213, https://doi.org/10.1029/2007PA001517
    Details
    Publication Date: 2024-01-09
    Description: A late Albian-early Cenomanian record (~103.3 to 99.0 Ma), including organic-rich deposits and a d13C increase associated with oceanic anoxic event 1d (OAE 1d), is described from Ocean Drilling Program sites 1050 and 1052 in the subtropical Atlantic. Foraminifera are well preserved at these sites. Paleotemperatures estimated from benthic d18O values average ~14°C for middle bathyal Site 1050 and ~17°C for upper bathyal Site 1052, whereas surface temperatures are estimated to have ranged from 26°C to 31°C at both sites. Among planktonic foraminifera, there is a steady balance of speciation and extinction with no discrete time of major faunal turnover. OAE 1d is recognized on the basis of a 1.2 per mill d13C increase (~100.0-99.6 Ma), which is similar in age and magnitude to d13C excursions documented in the North Atlantic and western Tethys. Organic-rich "black shales" are present throughout the studied interval at both sites. However, deposition of individual black shale beds was not synchronous between sites, and most of the black shale was deposited before the OAE 1d d13C increase. A similar pattern is observed at the other sites where OAE 1d has been recognized indicating that the site(s) of excess organic carbon burial that could have caused the d13C increase has (have) yet to be found. Our findings add weight to the view that OAEs should be chemostratigraphically (d13C) rather than lithostratigraphically defined.
    Keywords: 171-1050C; 171-1052E; Blake Nose, North Atlantic Ocean; DRILL; Drilling/drill rig; Joides Resolution; Leg171B; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 3
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    Isotopic measurements of 3 foraminifer species from ODP Hole 171-1050C (2006)
    PANGAEA
    In:  Supplement to: Isaza-Londoño, Carolina; MacLeod, Kenneth G; Huber, Brian T (2006): Maastrichtian North Atlantic warming, increasing stratification, and foraminiferal paleobiology at three timescales. Paleoceanography, 21(1), PA1012, https://doi.org/10.1029/2004PA001130
    Details
    Publication Date: 2024-01-09
    Description: Analysis of 944 single specimens of three species of late Maastrichtian planktonic foraminifera (Racemiguembelina fructicosa, Contusotruncana contusa, and Rugoglobigerina rugosa) from 38 samples spanning the last 3 Myr of the Cretaceous shows consistent isotopic trends through time, consistent isotopic differences among taxa, and high within-sample isotopic variability throughout. Within-sample variability does not change systematically through time for any taxon, but average d18O values decrease by approx. 1.5 per mill, and average d13C values diverge up section. Comparing taxa, average d18O values are similar within most samples, but average d13C values generally decrease from R. fructicosa to R. rugosa to C. contusa. In addition, the within-sample variability of individual d13C measurements is larger for R. fructicosa than for either C. contusa or R. rugosa, an observation which is consistent with a photosymbiotic habitat for R. fructicosa. In terms of Maastrichtian paleoceanography the negative d18O trend of approx. 1.5 per mill corresponds to a temperature increase of approx. 6°C, and the divergence of d13C values up section suggests an increasingly stratified water column in the western Atlantic through the late Maastrichtian. We suggest that these trends are best explained by increasing import of South Atlantic waters into the North Atlantic and an intensification of the Northern Hemisphere polar front.
    Keywords: 171-1050C; Blake Nose, North Atlantic Ocean; Contusotruncana contusa, δ13C; Contusotruncana contusa, δ18O; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Isotope ratio mass spectrometry; Joides Resolution; Leg171B; Ocean Drilling Program; ODP; Racemiguembelina fructicosa, δ13C; Racemiguembelina fructicosa, δ18O; Rugoglobigerina rugosa, δ13C; Rugoglobigerina rugosa, δ18O; Sample code/label; Sea surface temperature
    Type: Dataset
    Format: text/tab-separated-values, 3776 data points
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  • 4
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    Range table from planktonic foraminifers in ODP Hole 171-1049C (2005)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 171-1049C; Abundance estimate; Blake Nose, North Atlantic Ocean; Comment; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Foraminifera, planktic abundance; Foraminifera, planktic preservation; Globotruncana arca; Hedbergella infracretacea; Joides Resolution; Leg171B; Ocean Drilling Program; ODP; Rosita patelliformis; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 8 data points
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  • 5
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    Range table from planktonic foraminifers in ODP Hole 171-1049A (2005)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 171-1049A; Abundance estimate; Blake Nose, North Atlantic Ocean; Comment; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Foraminifera, planktic preservation; Globigerinelloides ferreolensis; Hedbergella delrioensis; Hedbergella planispira; Hedbergella trocoidea; Joides Resolution; Leg171B; Ocean Drilling Program; ODP; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 8 data points
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  • 6
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    Paleontological investigation on planktonic foraminifers of ODP Hole 171-1049A (2005)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 171-1049A; Abundance; Age, minimum/young; Blake Nose, North Atlantic Ocean; Comment; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg171B; Ocean Drilling Program; ODP; Preservation; Sample code/label; Zone from (bottom); Zone to (top)
    Type: Dataset
    Format: text/tab-separated-values, 97 data points
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  • 7
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    Paleontological investigation on planktonic foraminifers of ODP Hole 171-1050A (2005)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 171-1050A; Abundance; Age, maximum/old; Age, minimum/young; Blake Nose, North Atlantic Ocean; Comment; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg171B; Ocean Drilling Program; ODP; Preservation; Sample code/label; Zone from (bottom); Zone to (top)
    Type: Dataset
    Format: text/tab-separated-values, 150 data points
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  • 8
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    Paleontological investigation on planktonic foraminifers of ODP Hole 171-1049C (2005)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 171-1049C; Abundance; Age, maximum/old; Age, minimum/young; Blake Nose, North Atlantic Ocean; Comment; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg171B; Ocean Drilling Program; ODP; Preservation; Sample code/label; Zone from (bottom); Zone to (top)
    Type: Dataset
    Format: text/tab-separated-values, 72 data points
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  • 9
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    (Table S1) Late Albian foraminiferal carbon and oxygen isotope data from ODP Hole 171-1050C (2008)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 171-1050C; AGE; Berthelina intermedia, δ13C; Berthelina intermedia, δ18O; Berthelina sp., δ13C; Berthelina sp., δ18O; Biticinella breggiensis, δ13C; Biticinella breggiensis, δ18O; Blake Nose, North Atlantic Ocean; Costellagerina libyca, δ13C; Costellagerina libyca, δ18O; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Epistomina sp., δ13C; Epistomina sp., δ18O; Foraminifera, benthic δ13C; Foraminifera, benthic δ18O; Globigerinelloides bentonensis, δ13C; Globigerinelloides bentonensis, δ18O; Globigerinelloides pulchellus, δ13C; Globigerinelloides pulchellus, δ18O; Gyroidina globosa, δ13C; Gyroidina globosa, δ18O; Hedbergella delrioensis, δ13C; Hedbergella delrioensis, δ18O; Hedbergella praelibyca, δ13C; Hedbergella praelibyca, δ18O; Hedbergella simplex, δ13C; Hedbergella simplex, δ18O; Isotope ratio mass spectrometry; Joides Resolution; Leg171B; Ocean Drilling Program; ODP; Planomalina buxtorfi, δ13C; Planomalina buxtorfi, δ18O; Planomalina praebuxtorfi, δ13C; Planomalina praebuxtorfi, δ18O; Planulina sp., δ13C; Planulina sp., δ18O; Praeglobotruncana delrioensis, δ13C; Praeglobotruncana delrioensis, δ18O; Praeglobotruncana stephani, δ13C; Praeglobotruncana stephani, δ18O; Rotalipora appenninica, δ13C; Rotalipora appenninica, δ18O; Rotalipora gandolfii, δ13C; Rotalipora gandolfii, δ18O; Rotalipora praebalernaensis, δ13C; Rotalipora praebalernaensis, δ18O; Rotalipora sp., δ13C; Rotalipora sp., δ18O; Rotalipora ticinensis, δ13C; Rotalipora ticinensis, δ18O; Sample code/label; Ticinella primula, δ13C; Ticinella primula, δ18O
    Type: Dataset
    Format: text/tab-separated-values, 383 data points
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  • 10
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    (Table 1) Biostratigraphic datums for ODP holes 171-1050C and 171-1052E (2008)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 171-1050C; 171-1052E; Age model; Age model, biostratigraphy; Ageprofile Datum Description; Blake Nose, North Atlantic Ocean; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; Event label; Joides Resolution; Leg171B; Ocean Drilling Program; ODP
    Type: Dataset
    Format: text/tab-separated-values, 88 data points
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