Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
The Cenozoic palaeoenvironment of the Arctic Ocean. / Moran, Kathryn; Backman, Jan; Brinkhuis, Henk; Clemens, Steven C.; Cronin, Thomas; Dickens, Gerald R.; Eynaud, Frédérique; Gattacceca, Jérôme; Jakobsson, Martin; Jordan, Richard W.; Kaminski, Michael; King, John; Koc, Nalan; Krylov, Alexey; Martinez, Nahysa; Matthiessen, Jens; McInroy, David; Moore, Theodore C.; Onodera, Jonaotaro; O'Regan, Matthew; Pälike, Heiko; Rea, Brice; Rio, Domenico; Sakamoto, Tatsuhiko; Smith, David C.; Stein, Ruediger; St John, Kristen; Suto, Itsuki; Suzuki, Noritoshi; Takahashi, Kozo; Watanabe, Mahito; Yamamoto, Masanobu; Farrell, John; Frank, Martin; Kubik, Peter; Jokat, Wilfried; Kristoffersen, Yngve.
в: Nature, Том 441, № 7093, 01.06.2006, стр. 601-605.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - The Cenozoic palaeoenvironment of the Arctic Ocean
AU - Moran, Kathryn
AU - Backman, Jan
AU - Brinkhuis, Henk
AU - Clemens, Steven C.
AU - Cronin, Thomas
AU - Dickens, Gerald R.
AU - Eynaud, Frédérique
AU - Gattacceca, Jérôme
AU - Jakobsson, Martin
AU - Jordan, Richard W.
AU - Kaminski, Michael
AU - King, John
AU - Koc, Nalan
AU - Krylov, Alexey
AU - Martinez, Nahysa
AU - Matthiessen, Jens
AU - McInroy, David
AU - Moore, Theodore C.
AU - Onodera, Jonaotaro
AU - O'Regan, Matthew
AU - Pälike, Heiko
AU - Rea, Brice
AU - Rio, Domenico
AU - Sakamoto, Tatsuhiko
AU - Smith, David C.
AU - Stein, Ruediger
AU - St John, Kristen
AU - Suto, Itsuki
AU - Suzuki, Noritoshi
AU - Takahashi, Kozo
AU - Watanabe, Mahito
AU - Yamamoto, Masanobu
AU - Farrell, John
AU - Frank, Martin
AU - Kubik, Peter
AU - Jokat, Wilfried
AU - Kristoffersen, Yngve
N1 - Copyright: Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2006/6/1
Y1 - 2006/6/1
N2 - The history of the Arctic Ocean during the Cenozoic era (0-65 million years ago) is largely unknown from direct evidence. Here we present a Cenozoic palaeoceanographic record constructed from >400 m of sediment core from a recent drilling expedition to the Lomonosov ridge in the Arctic Ocean. Our record shows a palaeoenvironmental transition from a warm 'greenhouse' world, during the late Palaeocene and early Eocene epochs, to a colder 'icehouse' world influenced by sea ice and icebergs from the middle Eocene epoch to the present. For the most recent ∼14 Myr, we find sedimentation rates of 1-2 cm per thousand years, in stark contrast to the substantially lower rates proposed in earlier studies; this record of the Neogene reveals cooling of the Arctic that was synchronous with the expansion of Greenland ice (∼3.2 Myr ago) and East Antarctic ice (∼14 Myr ago). We find evidence for the first occurrence of ice-rafted debris in the middle Eocene epoch (∼45 Myr ago), some 35 Myr earlier than previously thought; fresh surface waters were present at ∼49 Myr ago, before the onset of ice-rafted debris. Also, the temperatures of surface waters during the Palaeocene/Eocene thermal maximum (∼55 Myr ago) appear to have been substantially warmer than previously estimated. The revised timing of the earliest Arctic cooling events coincides with those from Antarctica, supporting arguments for bipolar symmetry in climate change.
AB - The history of the Arctic Ocean during the Cenozoic era (0-65 million years ago) is largely unknown from direct evidence. Here we present a Cenozoic palaeoceanographic record constructed from >400 m of sediment core from a recent drilling expedition to the Lomonosov ridge in the Arctic Ocean. Our record shows a palaeoenvironmental transition from a warm 'greenhouse' world, during the late Palaeocene and early Eocene epochs, to a colder 'icehouse' world influenced by sea ice and icebergs from the middle Eocene epoch to the present. For the most recent ∼14 Myr, we find sedimentation rates of 1-2 cm per thousand years, in stark contrast to the substantially lower rates proposed in earlier studies; this record of the Neogene reveals cooling of the Arctic that was synchronous with the expansion of Greenland ice (∼3.2 Myr ago) and East Antarctic ice (∼14 Myr ago). We find evidence for the first occurrence of ice-rafted debris in the middle Eocene epoch (∼45 Myr ago), some 35 Myr earlier than previously thought; fresh surface waters were present at ∼49 Myr ago, before the onset of ice-rafted debris. Also, the temperatures of surface waters during the Palaeocene/Eocene thermal maximum (∼55 Myr ago) appear to have been substantially warmer than previously estimated. The revised timing of the earliest Arctic cooling events coincides with those from Antarctica, supporting arguments for bipolar symmetry in climate change.
UR - http://www.scopus.com/inward/record.url?scp=33745256185&partnerID=8YFLogxK
U2 - 10.1038/nature04800
DO - 10.1038/nature04800
M3 - Article
C2 - 16738653
VL - 441
SP - 601
EP - 605
JO - Nature
JF - Nature
SN - 0028-0836
IS - 7093
ER -
ID: 5505574