GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Document type
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Sea surface temperatures reconstructed from sediment core U1338 (2013)
    PANGAEA
    In:  Supplement to: Rousselle, Gabrielle; Beltran, Catherine; Sicre, Marie-Alexandrine; Raffi, Isabella; De Refélis, Marc (2013): Changes in sea-surface conditions in the Equatorial Pacific during the middle Miocene–Pliocene as inferred from coccolith geochemistry. Earth and Planetary Science Letters, 361, 412-421, https://doi.org/10.1016/j.epsl.2012.11.003
    Details
    Publication Date: 2023-02-24
    Description: This study presents a new alkenone-derived Sea Surface Temperature (SST) record and d18ONoelaerhabdaceae data of the 2-5 µm carbonate fractions from the IODP site U1338 located in the Eastern Equatorial Pacific (EEP), over the Miocene-Pliocene. Our data and those available from other sites of the same area show the establishment of a cold tongue during the early Pliocene (4.4 - 3.6 Ma). SST and d18ONoelaerhabdaceae time-series indicate periods of significant salinity variations. Comparison with the d18Obenthic curve from sediment cores of the Equatorial Pacific Ocean allow us to distinguish between global changes and local surface salinity variations in the EEP. Ice sheet growth and evaporation-precipitation are then discussed as possible drivers of such changes, as well as the role of Central American and the Indonesian seaway restriction. Our data suggest a shallowing of the thermocline in the EEP, between 6.8 and 6 Ma, and its shoaling between 4.8 and 4.0 Ma, suggesting the appearance of the cold tongue (Steph et al., 2010). The Pliocene climate transition would therefore not be primarily driven by Northern hemisphere glaciation.
    Keywords: 321-U1338; AGE; Alkenone, unsaturation index UK'37; Calculated from C37 alkenones (Prahl & Wakeham, 1987); Calculated from UK'37 (Müller et al, 1998); Calculated from UK37 (Conte et al., 2006); COMPCORE; Composite Core; DEPTH, sediment/rock; Exp321; Gas chromatography - Mass spectrometry (GC-MS); Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Isotope ratio mass spectrometry; Joides Resolution; n-Alkane C37; Pacific Equatorial Age Transect II / Juan de Fuca; Sample code/label; Sea surface temperature; δ18O, carbonate
    Type: Dataset
    Format: text/tab-separated-values, 877 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    (Supplementary Table 1) Carbonate accumulation rate dataset of the equatorial Pacific (2012)
    PANGAEA
    Details
    Publication Date: 2024-05-06
    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
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 3
    facet.materialart.
    Unknown
    Carbonate compensation depth (CCD) of the of the equatorial Pacific (2012)
    PANGAEA
    Details
    Publication Date: 2024-05-06
    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
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    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 J; 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: 2024-05-06
    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
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    A Cenozoic record of the equatorial Pacific carbonate compensation depth (2012)
    Nature Publishing Group
    In:  Nature, 488 (7413). pp. 609-614.
    Details
    Publication Date: 2017-03-01
    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.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    Format: text
    DOI: 10.1038/nature11360
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...