Nannofossil imprints across the Paleocene-Eocene thermal maximum

被引:0
|
作者
Slater, Sam M. [1 ]
Bown, Paul R. [2 ]
Jardine, Phillip E. [3 ]
机构
[1] Swedish Museum Nat Hist, Dept Palaeobiol, SE-10405 Stockholm, Sweden
[2] UCL, Dept Earth Sci, London WC1E 6BT, England
[3] Univ Monster, Inst Geol & Palaeontol, D-48149 Monster, Germany
基金
瑞典研究理事会;
关键词
OCEAN ACIDIFICATION; RECORD; SHELF;
D O I
10.1130/G51746.1
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
The Paleocene-Eocene thermal maximum (PETM; ca. 56 Ma) geological interval records a marked decline in calcium carbonate (CaCO3) in seafloor sediments, potentially reflecting an episode of deepand possibly shallow-water ocean acidification. However, because CaCO3 is susceptible to postburial dissolution, the extent to which this process has influenced the PETM geological record remains uncertain. Here, we tested for evidence of postburial dissolution by searching for imprint fossils of nannoplankton preserved on organic matter. We studied a PETM succession from the South Dover Bridge (SDB) core, Maryland, eastern United States, and compared our imprint record with previously published data from traditionally sampled CaCO3-preserved nannoplankton body fossils. Abundant imprints through intervals devoid of CaCO3 would signify that postburial dissolution removed much of the CaCO3 from the rock record. Imprints were recorded from most samples but were rare and of low diversity. Body fossils were substantially more numerous and diverse, capturing a more complete record of the living nannoplankton communities through the PETM. The SDB succession records a dissolution zone/low-carbonate interval at the onset of the PETM, through which nannoplankton body fossils are rare. No nannoplankton imprints were found from this interval, suggesting that the rarity of body fossils is unlikely to have been the result of postburial dissolution. Instead, our findings suggest that declines in CaCO3 through the PETM at the SDB location were the result of: (1) biotic responses to changes that were happening during this event, and/or (2) CaCO3 dissolution that occurred before lithification (i.e., in the water column or at the seafloor).
引用
收藏
页码:271 / 275
页数:5
相关论文
共 50 条
  • [41] Sharply increased insect herbivory during the Paleocene-Eocene thermal maximum
    Currano, Ellen D.
    Wilf, Peter
    Wing, Scott L.
    Labandeira, Conrad C.
    Lovelock, Elizabeth C.
    Royer, Dana L.
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2008, 105 (06) : 1960 - 1964
  • [42] Extreme warming of tropical waters during the Paleocene-Eocene Thermal Maximum
    Aze, T.
    Pearson, P. N.
    Dickson, A. J.
    Badger, M. P. S.
    Bown, P. R.
    Pancost, R. D.
    Gibbs, S. J.
    Huber, B. T.
    Leng, M. J.
    Coe, A. L.
    Cohen, A. S.
    Foster, G. L.
    [J]. GEOLOGY, 2014, 42 (09) : 739 - 742
  • [43] Coccolithophore productivity response to greenhouse event of the Paleocene-Eocene Thermal Maximum
    Stoll, Heather M.
    Shimizu, Nobumichi
    Archer, David
    Ziveri, Patrizia
    [J]. EARTH AND PLANETARY SCIENCE LETTERS, 2007, 258 (1-2) : 192 - 206
  • [44] Carbon-cycle dynamics during the Paleocene-Eocene Thermal Maximum
    Chen, Zuoling
    [J]. Kexue Tongbao/Chinese Science Bulletin, 2022, 67 (15): : 1704 - 1714
  • [45] Coastal response to global warming during the Paleocene-Eocene Thermal Maximum
    Sharman, Glenn R.
    Covault, Jacob A.
    Flaig, Peter P.
    Dunn, Regan
    Fussee-Durham, Preston
    Larson, Toti E.
    Shanahan, Timothy M.
    Dubois, Kalli
    Shaw, John B.
    Crowley, James L.
    Shaulis, Barry
    [J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 2023, 625
  • [46] Swift Weathering Response on Floodplains During the Paleocene-Eocene Thermal Maximum
    Ramos, Evan J.
    Breecker, Daniel O.
    Barnes, Jaime D.
    Li, Fangliang
    Gingerich, Philip D.
    Loewy, Staci L.
    Satkoski, Aaron M.
    Baczynski, Allison A.
    Wing, Scott L.
    Miller, Nathaniel R.
    Lassiter, John C.
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2022, 49 (06)
  • [47] Productivity feedback did not terminate the Paleocene-Eocene Thermal Maximum (PETM)
    Torfstein, A.
    Winckler, G.
    Tripati, A.
    [J]. CLIMATE OF THE PAST, 2010, 6 (02) : 265 - 272
  • [48] Seawater calcium isotope record over the Paleocene-Eocene Thermal Maximum
    Griffith, E. M.
    Paytan, A.
    [J]. GEOCHIMICA ET COSMOCHIMICA ACTA, 2010, 74 (12) : A354 - A354
  • [49] ARCTOCYONID DIVERSITY DURING THE PALEOCENE-EOCENE THERMAL MAXIMUM OF NORTH AMERICA
    Morse, Paul E.
    Bloch, Jonathan I.
    Secord, Ross
    Chester, Stephen G.
    Boyer, Doug M.
    [J]. JOURNAL OF VERTEBRATE PALEONTOLOGY, 2012, 32 : 146 - 146
  • [50] Freshwater ecosystem collapse and mass mortalities at the Paleocene-Eocene thermal maximum
    Chen, Zuoling
    Ding, Zhongli
    Sun, Jimin
    Yang, Shiling
    Ni, Xijun
    Wang, Xu
    Wang, Yongli
    Zhang, Jiangyong
    He, Wei
    [J]. GLOBAL AND PLANETARY CHANGE, 2023, 227