2024-03-28T12:01:23Z
https://oai.datacite.org/oai
doi:10.1594/pangaea.769658
2024-01-21T03:49:26Z
PANGAEA
PANGAEA.REPOSITORY
58
PANGAEA.REPOSITORY
10.1594/PANGAEA.769658
Naish, Tim R
Tim R
Naish
0000-0002-1185-9932
Powell, Ross
Ross
Powell
Levy, Richard H
Richard H
Levy
0000-0002-8783-0167
Wilson, Gary S
Gary S
Wilson
0000-0003-0025-3641
Scherer, Reed P
Reed P
Scherer
Talarico, Franco M
Franco M
Talarico
0000-0002-7254-4301
Krissek, Lawrence A
Lawrence A
Krissek
Niessen, Frank
Frank
Niessen
0000-0001-6453-0594
Pompilio, Massimo
Massimo
Pompilio
0000-0002-0742-0679
Wilson, Terry
Terry
Wilson
Carter, Lionel
Lionel
Carter
DeConto, Robert M
Robert M
DeConto
Huybers, Peter
Peter
Huybers
0000-0002-3734-8145
McKay, Robert M
Robert M
McKay
0000-0002-5602-6985
Pollard, David
David
Pollard
Ross, J
J
Ross
Winter, Diane M
Diane M
Winter
Barrett, Peter J
Peter J
Barrett
Browne, G
G
Browne
Cody, Rosemary
Rosemary
Cody
Cowan, Ellen A
Ellen A
Cowan
0000-0001-6512-5769
Crampton, James
James
Crampton
0000-0003-3270-9981
Dunbar, Gavin B
Gavin B
Dunbar
Dunbar, Nelia W
Nelia W
Dunbar
0000-0002-5181-937X
Florindo, Fabio
Fabio
Florindo
0000-0002-6058-9748
Gebhardt, Catalina
Catalina
Gebhardt
0000-0002-3227-0676
Graham, I J
I J
Graham
Hannah, Mike J
Mike J
Hannah
Hansaraj, D
D
Hansaraj
Harwood, David M
David M
Harwood
0000-0002-9449-2127
Helling, D
D
Helling
Henrys, Stuart A
Stuart A
Henrys
0000-0002-7164-5274
Hinnov, Linda A
Linda A
Hinnov
0000-0001-8027-4834
Kuhn, Gerhard
Gerhard
Kuhn
0000-0001-6069-7485
Kyle, Philip R
Philip R
Kyle
Läufer, Andreas
Andreas
Läufer
Maffioli, P
P
Maffioli
Magens, Diana
Diana
Magens
Mandernack, Kevin W
Kevin W
Mandernack
McIntosh, W C
W C
McIntosh
Millan, C
C
Millan
Morin, Roger H
Roger H
Morin
Ohneiser, Christian
Christian
Ohneiser
0000-0002-2781-2522
Paulsen, Timothy S
Timothy S
Paulsen
Persico, Davide
Davide
Persico
0000-0001-5194-9724
Raine, J Ian
J Ian
Raine
0000-0001-5294-2102
Reed, J
J
Reed
Riesselman, Christina R
Christina R
Riesselman
0000-0002-2436-4306
Sagnotti, Leonardo
Leonardo
Sagnotti
0000-0003-3944-201X
Schmitt, Douglas R
Douglas R
Schmitt
0000-0001-6920-0658
Sjunneskog, Charlotte
Charlotte
Sjunneskog
Strong, P
P
Strong
Taviani, Marco
Marco
Taviani
0000-0003-0414-4274
Vogel, Stefan
Stefan
Vogel
0000-0002-4350-7130
Wilch, T
T
Wilch
Williams, Trevor
Trevor
Williams
(Table S1) Chronostratigraphic constrains for sediment core AND1-1B
PANGAEA
2009
D-ANDRILL
Datum level
DEPTH, sediment/rock
Depth, top/min
Depth, bottom/max
Method comment
Age model
Age model, optional
Age, error
Ageprofile Datum Description
Age, comment
Drilling/drill rig
MIS
McMurdo Station
Antarctic Geological Drilling (ANDRILL)
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas (SPP1158)
2006-10-31T00:00:00/2006-12-26T00:00:00
en
Supplementary Dataset
10.1038/nature07867
129 data points
text/tab-separated-values
Creative Commons Attribution 3.0 Unported
Thirty years after oxygen isotope records from microfossils deposited in ocean sediments confirmed the hypothesis that variations in the Earth's orbital geometry control the ice ages (Hays et al., 1976, doi:10.1126/science.194.4270.1121), fundamental questions remain over the response of the Antarctic ice sheets to orbital cycles (Raymo and Huybers, 2008, doi:10.1038/nature06589). Furthermore, an understanding of the behaviour of the marine-based West Antarctic ice sheet (WAIS) during the 'warmer-than-present' early-Pliocene epoch (~5-3 Myr ago) is needed to better constrain the possible range of ice-sheet behaviour in the context of future global warming (Solomon et al., 2007). Here we present a marine glacial record from the upper 600 m of the AND-1B sediment core recovered from beneath the northwest part of the Ross ice shelf by the ANDRILL programme and demonstrate well-dated, ~40-kyr cyclic variations in ice-sheet extent linked to cycles in insolation influenced by changes in the Earth's axial tilt (obliquity) during the Pliocene. Our data provide direct evidence for orbitally induced oscillations in the WAIS, which periodically collapsed, resulting in a switch from grounded ice, or ice shelves, to open waters in the Ross embayment when planetary temperatures were up to ~3° C warmer than today ( Kim and Crowley, 2000, doi:10.1029/1999PA000459) and atmospheric CO2 concentration was as high as ~400 p.p.m.v. (van der Burgh et al., 1993, doi:10.1126/science.260.5115.1788, Raymo et al., 1996, doi:10.1016/0377-8398(95)00048-8). The evidence is consistent with a new ice-sheet/ice-shelf model (Pollard and DeConto, 2009, doi:10.1038/nature07809) that simulates fluctuations in Antarctic ice volume of up to +7 m in equivalent sea level associated with the loss of the WAIS and up to +3 m in equivalent sea level from the East Antarctic ice sheet, in response to ocean-induced melting paced by obliquity. During interglacial times, diatomaceous sediments indicate high surface-water productivity, minimal summer sea ice and air temperatures above freezing, suggesting an additional influence of surface melt (Huybers, 2006, doi:10.1126/science.1125249) under conditions of elevated CO2.
Biostratigraphic event ages include the maximum and minimum age identified in the CONOP constrained Southern Ocean diatom biochronologic calibration of Cody et al. (2008, doi:10.1016/j.palaeo.2007.08.020), except FO of Thalassiosira complicata and FO Rhizosolenia sp. D which are new (unpublished) ages determined in recent model runs (Cody et al., submitted).
Supplement to: Naish, Tim R; Powell, Ross; Levy, Richard H; Wilson, Gary S; Scherer, Reed P; Talarico, Franco M; Krissek, Lawrence A; Niessen, Frank; Pompilio, Massimo; Wilson, Terry; Carter, Lionel; DeConto, Robert M; Huybers, Peter; McKay, Robert M; Pollard, David; Ross, J; Winter, Diane M; Barrett, Peter J; Browne, G; Cody, Rosemary; Cowan, Ellen A; Crampton, James; Dunbar, Gavin B; Dunbar, Nelia W; Florindo, Fabio; Gebhardt, Catalina; Graham, I J; Hannah, Mike J; Hansaraj, D; Harwood, David M; Helling, D; Henrys, Stuart A; Hinnov, Linda A; Kuhn, Gerhard; Kyle, Philip R; Läufer, Andreas; Maffioli, P; Magens, Diana; Mandernack, Kevin W; McIntosh, W C; Millan, C; Morin, Roger H; Ohneiser, Christian; Paulsen, Timothy S; Persico, Davide; Raine, J Ian; Reed, J; Riesselman, Christina R; Sagnotti, Leonardo; Schmitt, Douglas R; Sjunneskog, Charlotte; Strong, P; Taviani, Marco; Vogel, Stefan; Wilch, T; Williams, Trevor (2009): Obliquity-paced Pliocene West Antarctic ice sheet oscillations. Nature, 458(7236), 322-329
167.08932
-77.88944
German Research Foundation
https://doi.org/10.13039/501100001659
5472008
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas