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  • 1
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    Nd isotopes of ODP Sites 146-893 and 167-1017 samples (2013)
    PANGAEA
    In:  Supplement to: Murphy, Daniel P; Thomas, Deborah J (2010): The negligible role of intermediate water circulation in stadial–interstadial oxygenation variations along the southern California margin: Evidence from Nd isotopes. Quaternary Science Reviews, 29(19-20), 2442-2450, https://doi.org/10.1016/j.quascirev.2010.05.021
    Details
    Publication Date: 2024-01-09
    Description: Changes in the source of intermediate waters to the southern California margin may have caused variations in seafloor oxygen levels on stadial–interstadial time scales. We test this hypothesis using the Nd isotopic composition of benthic foraminifera and fossil fish debris from ODP Sites 893 and 1017 to track the composition of intermediate waters across interstadials 8-14 (~37-52 ka) during Marine Isotope Stage 3. The epsilon-Nd values of waters bathing the seafloor at Site 893 were typically ~-9 and those bathing Site 1017 were ~-7, both of which are significantly less radiogenic than waters that had originated in either the North Pacific or Southern Ocean (by the time such waters reached the southern California margin). Detrital silicate epsilon-Nd values of nearly -12 suggest that this offset toward lower epsilon-Nd values was likely caused by boundary scavenging that partially overprinted the water mass composition with local/regional fluvial Nd inputs. In spite of the evidence for boundary scavenging, the lack of systematic seawater Nd isotope changes on a stadial–interstadial basis suggests that the provenance of the intermediate waters did not change, and that the waters were derived from the Southern Ocean. Instead, changes in local/regional sea surface productivity may have caused the recorded changes in seafloor oxygenation.
    Keywords: Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 2
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    (Table 1) Nd isotope ratios of silicate samples of ODP Holes 146-893A and 167-1017D (2010)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 146-893A; 167-1017D; AGE; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Event label; Joides Resolution; Leg146; Leg167; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; North Pacific Ocean; Ocean Drilling Program; ODP; Size fraction; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 40 data points
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  • 3
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    (Table 2a) Nd isotope ratios of fish debris and foraminifera from ODP Holes 146-893A (2010)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 146-893A; AGE; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Joides Resolution; Laboratory; Leg146; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; North Pacific Ocean; Ocean Drilling Program; ODP; Sample comment; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 143 data points
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  • 4
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    (Table 2) Biostratigraphic and magnetostratigraphic datums used to construct the age models (2012)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 122-763B; 123-765C; 123-766A; 183-1138A; 198-1208A; 198-1213A; Age model; Age model, biostratigraphy and magnetostratigraphy; Ageprofile Datum Description; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Elevation of event; Event label; Indian Ocean; Joides Resolution; Latitude of event; Leg122; Leg123; Leg183; Leg198; Longitude of event; North Pacific Ocean; Ocean Drilling Program; ODP; Reference/source; South Indian Ridge, South Indian Ocean
    Type: Dataset
    Format: text/tab-separated-values, 102 data points
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  • 5
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    (Table 3) Nd isotope ratios of Indian and Pacific Ocean ODP holes (2012)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 122-763B; 123-765C; 123-766A; 183-1138A; 198-1208A; 198-1213B; AGE; Comment; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Indian Ocean; Joides Resolution; Laboratory; Latitude of event; Leg122; Leg123; Leg183; Leg198; Longitude of event; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; North Pacific Ocean; Ocean Drilling Program; ODP; Sample code/label; South Indian Ridge, South Indian Ocean; ε-Neodymium, standard deviation; ε-Neodymium (T)
    Type: Dataset
    Format: text/tab-separated-values, 391 data points
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  • 6
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    (Table 2b) Nd isotope ratios of fish debris and foraminifera from ODP Holes 167-1017E (2010)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 167-1017E; AGE; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Joides Resolution; Laboratory; Leg167; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; North Pacific Ocean; Ocean Drilling Program; ODP; Sample comment; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 120 data points
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  • 7
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    Nd-isotope ratios of Cretaceous sediment samples (2012)
    PANGAEA
    In:  Supplement to: Murphy, Daniel P; Thomas, Deborah J (2012): Cretaceous deep-water formation in the Indian sector of the Southern Ocean. Paleoceanography, 27(1), PA1211, https://doi.org/10.1029/2011PA002198
    Details
    Publication Date: 2024-01-09
    Description: The role that meridional overturning circulation (MOC) patterns played in poleward heat transport during the extreme warmth of the Early to Late Cretaceous is a fundamental and unresolved question in climate dynamics. In order to address this question we must determine where deep waters formed, and how they may have circulated during periods of extreme warmth. Here we present late Albian through Maastrichtian (105 to 65 Ma) Nd isotope records from Deep Sea Drilling Project (DSDP) and Ocean Drilling Program (ODP) sites in the proto-Indian Ocean and the tropical Pacific. Comparison of these data with previously published records indicates deep-water formation in the Indian sector of the Southern Ocean began at least ∼105 Ma, extending the record of high-latitude convection back into the Early Cretaceous prior to the peak warmth of the mid-Cretaceous. The growing body of data supports a mode of MOC in part characterized by high-latitude downwelling during the peak of greenhouse warmth of the Mesozoic and Cenozoic. However, this mode of MOC likely was characterized by numerous locations of deep convection that were regionally important, but not significant in terms of a globally overturning circulation due to paleogeographic and bathymetric barriers.
    Keywords: Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 8
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    Carbonate compensation depth (CCD) reconstruction of the equatorial Pacific (2012)
    PANGAEA
    In:  Supplement to: Pälike, Heiko; Lyle, Mitchell W; Nishi, Hiroshi; Raffi, Isabella; Ridgwell, Andy; Gamage, Kusali; Klaus, Adam; Acton, Gary D; Anderson, Louise; Backman, Jan; Baldauf, Jack G; Beltran, Catherine; Bohaty, Steven M; Bown, Paul R; Busch, William H; Channell, James E T; Chun, Cecily O J; Delaney, Margaret Lois; Dewang, Pawan; Dunkley Jones, Tom; Edgar, Kirsty M; Evans, Helen F; Fitch, Peter; Foster, Gavin L; Gussone, Nikolaus; Hasegawa, Hitoshi; Hathorne, Ed C; Hayashi, Hiroki; Herrle, Jens O; Holbourn, Ann E; Hovan, Steven A; Hyeong, Kiseong; Iijima, Koichi; Ito, Takashi; Kamikuri, Shin-Ichi; Kimoto, Katsunori; Kuroda, Junichiro; Leon-Rodriguez, Lizette; Malinverno, Alberto; Moore, Theodore C; Murphy, Brandon; Murphy, Daniel P; Nakamur, Hideto; Ogane, Kaoru; Ohneiser, Christian; Richter, Carl; Robinson, Rebecca S; Rohling, Eelco J; Romero, Oscar E; Sawada, Ken; Scher, Howie D; Schneider, Leah; Sluijs, Appy; Takata, Hiroyuki; Tian, Jun; Tsujimoto, Akira; Wade, Bridget S; Westerhold, Thomas; Wilkens, Roy H; Williams, Trevor; Wilson, Paul A; Yamamoto, Yuhji; Yamamoto, Shinya; Yamazaki, Toshitsugu; Zeebe, Richard E (2012): A Cenozoic record of the equatorial Pacific carbonate compensation depth. Nature, 488, 609-614, https://doi.org/10.1038/nature11360
    Details
    Publication Date: 2024-04-13
    Description: Atmospheric carbon dioxide concentrations and climate are regulated on geological timescales by the balance between carbon input from volcanic and metamorphic outgassing and its removal by weathering feedbacks; these feedbacks involve the erosion of silicate rocks and organic-carbon-bearing rocks. The integrated effect of these processes is reflected in the calcium carbonate compensation depth, which is the oceanic depth at which calcium carbonate is dissolved. Here we present a carbonate accumulation record that covers the past 53 million years from a depth transect in the equatorial Pacific Ocean. The carbonate compensation depth tracks long-term ocean cooling, deepening from 3.0-3.5 kilometres during the early Cenozoic (approximately 55 million years ago) to 4.6 kilometres at present, consistent with an overall Cenozoic increase in weathering. We find large superimposed fluctuations in carbonate compensation depth during the middle and late Eocene. Using Earth system models, we identify changes in weathering and the mode of organic-carbon delivery as two key processes to explain these large-scale Eocene fluctuations of the carbonate compensation depth.
    Keywords: Center for Marine Environmental Sciences; Deep Sea Drilling Project; DSDP; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; MARUM; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 9
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    Carbonate compensation depth (CCD) of the of the equatorial Pacific (2012)
    PANGAEA
    Details
    Publication Date: 2024-04-13
    Keywords: AGE; Center for Marine Environmental Sciences; Deep Sea Drilling Project; Depth, reference; DSDP; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; MARUM; Ocean Drilling Program; ODP
    Type: Dataset
    Format: text/tab-separated-values, 228 data points
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  • 10
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    (Supplementary Table 1) Carbonate accumulation rate dataset of the equatorial Pacific (2012)
    PANGAEA
    Details
    Publication Date: 2024-04-13
    Keywords: 199-1215A; 199-1217A; 199-1217B; 199-1218A; 199-1218B; 199-1218C; 199-1219A; 199-1220A; 199-1220B; 320-U1331A; 320-U1331C; 320-U1332A; 320-U1332B; 320-U1333A; 320-U1333B; 320-U1334A; 320-U1335A; 320-U1336A; 321-U1337A; 321-U1337B; 321-U1338A; 321-U1338B; 85-574; 85-574C; 8-69; 8-69A; 8-70; 8-70A; Accumulation rate, calcium carbonate; Accumulation rate, mass; AGE; Calcium carbonate; Calculated; Center for Marine Environmental Sciences; Deep Sea Drilling Project; Density, dry bulk; DEPTH, sediment/rock; Depth, sediment revised; DRILL; Drilling/drill rig; DSDP; Event label; Exp320; Exp321; Glomar Challenger; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; LATITUDE; Leg199; Leg8; Leg85; LONGITUDE; MARUM; North Pacific/BASIN; North Pacific/TROUGH; North Pacific Ocean; Ocean Drilling Program; ODP; Pacific Equatorial Age Transect I; Pacific Equatorial Age Transect II / Juan de Fuca; Paleoelevation; Reference/source; Sample code/label; Sedimentation rate
    Type: Dataset
    Format: text/tab-separated-values, 34059 data points
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