Integrated ocean drilling program expedition 318 preliminary report wilkes land glacial history cenozoic east antarctic ice sheet evolution from wilkes land margin sediments

Hendrik Brinkhuis, Carlota Escutia Dotti, Adam Klaus, Annick Fehr, Trevor Williams, James A.P. Bendle, Peter K. Bijl, Steven M. Bohaty, Stephanie A. Carr, Robert B. Dunbar, Jhon J. Gonzàlez, Travis G. Hayden, Masao Iwai, Francisco J. Jimenez-Espejo, Kota Katsuki, Gee Soo Kong, Robert M. McKay, Mutsumi Nakai, Matthew P. Olney, Sandra PasschierStephen F. Pekar, Jorg Pross, Christina Riesselman, Ursula Röhl, Toyosaburo Sakai, Prakash Kumar Shrivastava, Catherine E. Stickley, Saiko Sugisaki, Lisa Tauxe, Shouting Tuo, Tina Van De Flierdt, Kevin Welsh, Masako Yamane, Dan Brinkhuis

Research output: Contribution to journalArticle

Abstract

Understanding the evolution and dynamics of the Antarctic cryosphere, from its inception during the Eocene-Oligocene transition (∼34 Ma) through the significant subsequent periods of likely coupled climate and atmospheric CO2 changes, is not only of major scientific interest but also is of great importance for society. Drilling the Antarctic Wilkes Land margin was designed to provide a long-term record of the sedimentary archives along an inshore to offshore transect of Cenozoic Antarctic glaciation and its intimate relationships with global climatic and oceanographic change. The principal goals were 1. To obtain the timing and nature of the first arrival of ice at the Wilkes Land margin inferred to have occurred during the earliest Oligocene (reflecting Oligocene isotope Event 1), 2. To obtain the nature and age of the changes in the geometry of the prograda- tional wedge interpreted to correspond with large fluctuations in the extent of the East Antarctic Ice Sheet and possibly coinciding with the transition from a wet-based to a cold-based glacial regime, 3. To obtain a high-resolution record of Antarctic climate variability during the late Neogene and Quaternary, and 4. To obtain an unprecedented ultrahigh resolution (i.e., annual to decadal) Holocene record of climate variability. The Wilkes Land drilling program was developed to constrain the age, nature, and paleoenvironment of deposition of the previously only seismically inferred glacial sequences. Drilling the Wilkes Land margin has a unique advantage in that seismic Unconformity WL-U3, inferred to separate preglacial strata below from glacial strata above in the continental shelf, can be traced to the continental rise deposits, allowing sequences to be linked from shelf to rise. Integrated Ocean Drilling Program Expedition 318, carried out in January-March 2010 (Wellington, New Zealand to Hobart, Australia), occupied seven sites that recovered ∼2000 m of high-quality middle Eocene-Holocene sediments at proposed Sites WLRIS-6A, WLRIS-7A, WLRIS-4A, and WLRIS-5A (Sites U1355, U1356, U1359, and U1361) on the Wilkes Land rise and Sites WLSHE-8A, WLSHE-9A, and ADEL-01B (Sites U1358, U1360, and U1357) on the Wilkes Land shelf at water depths between ∼400 and 4000 m. Together, the cores represent ∼53 m.y. of Antarctic history. Recovered cores successfully date the inferred seismic units (WL-S4-WL-S9). The cores reveal the history of the Wilkes Land Antarctic margin from an ice-free "greenhouse Antarctica," to the first cooling, to the onset and erosional consequences of the first glaciation and the subsequent dynamics of the waxing and waning ice sheets, all the way to thick, unprecedented "tree ring style" records with seasonal resolution of the last deglaciation that began ∼10,000 y ago. The cores also reveal details of the tectonic history of the so-called Australo-Antarctic Gulf (at 53 Ma) from the onset of the second phase of rifting between Australia and Antarctica, to ever subsiding margins and deepening, all the way to the present continental and ever widening ocean/continent configuration. Tectonic and climatic change turned the initially shallow broad subtropical Antarctic Wilkes Land shelf into a deeply subsided basin with a narrow, iceinfested margin. Thick Oligocene and notably Neogene deposits, including turbidites, contourites, and larger and smaller scaled debris mass flows witness the erosional power of the waxing and waning ice sheets and deep ocean currents. The recovered clays, silts, and sands and their microfossils also reveal the transition of subtropical ecosystems and a vegetated Antarctica into sea ice-dominated ecosystems bordered by calving glaciers.

Original languageEnglish
Pages (from-to)1-101
Number of pages101
JournalIntegrated Ocean Drilling Program: Preliminary Reports
Issue number318
StatePublished - 1 Jan 2010

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glacial history
Ocean Drilling Program
ice sheet
sediment
Oligocene
drilling
Neogene
glaciation
Eocene
climate
history
Holocene
contourite
ice
cryosphere
continental rise
last deglaciation
tectonics
land
microfossil

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Brinkhuis, Hendrik ; Dotti, Carlota Escutia ; Klaus, Adam ; Fehr, Annick ; Williams, Trevor ; Bendle, James A.P. ; Bijl, Peter K. ; Bohaty, Steven M. ; Carr, Stephanie A. ; Dunbar, Robert B. ; Gonzàlez, Jhon J. ; Hayden, Travis G. ; Iwai, Masao ; Jimenez-Espejo, Francisco J. ; Katsuki, Kota ; Kong, Gee Soo ; McKay, Robert M. ; Nakai, Mutsumi ; Olney, Matthew P. ; Passchier, Sandra ; Pekar, Stephen F. ; Pross, Jorg ; Riesselman, Christina ; Röhl, Ursula ; Sakai, Toyosaburo ; Shrivastava, Prakash Kumar ; Stickley, Catherine E. ; Sugisaki, Saiko ; Tauxe, Lisa ; Tuo, Shouting ; Van De Flierdt, Tina ; Welsh, Kevin ; Yamane, Masako ; Brinkhuis, Dan. / Integrated ocean drilling program expedition 318 preliminary report wilkes land glacial history cenozoic east antarctic ice sheet evolution from wilkes land margin sediments. In: Integrated Ocean Drilling Program: Preliminary Reports. 2010 ; No. 318. pp. 1-101.
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title = "Integrated ocean drilling program expedition 318 preliminary report wilkes land glacial history cenozoic east antarctic ice sheet evolution from wilkes land margin sediments",
abstract = "Understanding the evolution and dynamics of the Antarctic cryosphere, from its inception during the Eocene-Oligocene transition (∼34 Ma) through the significant subsequent periods of likely coupled climate and atmospheric CO2 changes, is not only of major scientific interest but also is of great importance for society. Drilling the Antarctic Wilkes Land margin was designed to provide a long-term record of the sedimentary archives along an inshore to offshore transect of Cenozoic Antarctic glaciation and its intimate relationships with global climatic and oceanographic change. The principal goals were 1. To obtain the timing and nature of the first arrival of ice at the Wilkes Land margin inferred to have occurred during the earliest Oligocene (reflecting Oligocene isotope Event 1), 2. To obtain the nature and age of the changes in the geometry of the prograda- tional wedge interpreted to correspond with large fluctuations in the extent of the East Antarctic Ice Sheet and possibly coinciding with the transition from a wet-based to a cold-based glacial regime, 3. To obtain a high-resolution record of Antarctic climate variability during the late Neogene and Quaternary, and 4. To obtain an unprecedented ultrahigh resolution (i.e., annual to decadal) Holocene record of climate variability. The Wilkes Land drilling program was developed to constrain the age, nature, and paleoenvironment of deposition of the previously only seismically inferred glacial sequences. Drilling the Wilkes Land margin has a unique advantage in that seismic Unconformity WL-U3, inferred to separate preglacial strata below from glacial strata above in the continental shelf, can be traced to the continental rise deposits, allowing sequences to be linked from shelf to rise. Integrated Ocean Drilling Program Expedition 318, carried out in January-March 2010 (Wellington, New Zealand to Hobart, Australia), occupied seven sites that recovered ∼2000 m of high-quality middle Eocene-Holocene sediments at proposed Sites WLRIS-6A, WLRIS-7A, WLRIS-4A, and WLRIS-5A (Sites U1355, U1356, U1359, and U1361) on the Wilkes Land rise and Sites WLSHE-8A, WLSHE-9A, and ADEL-01B (Sites U1358, U1360, and U1357) on the Wilkes Land shelf at water depths between ∼400 and 4000 m. Together, the cores represent ∼53 m.y. of Antarctic history. Recovered cores successfully date the inferred seismic units (WL-S4-WL-S9). The cores reveal the history of the Wilkes Land Antarctic margin from an ice-free {"}greenhouse Antarctica,{"} to the first cooling, to the onset and erosional consequences of the first glaciation and the subsequent dynamics of the waxing and waning ice sheets, all the way to thick, unprecedented {"}tree ring style{"} records with seasonal resolution of the last deglaciation that began ∼10,000 y ago. The cores also reveal details of the tectonic history of the so-called Australo-Antarctic Gulf (at 53 Ma) from the onset of the second phase of rifting between Australia and Antarctica, to ever subsiding margins and deepening, all the way to the present continental and ever widening ocean/continent configuration. Tectonic and climatic change turned the initially shallow broad subtropical Antarctic Wilkes Land shelf into a deeply subsided basin with a narrow, iceinfested margin. Thick Oligocene and notably Neogene deposits, including turbidites, contourites, and larger and smaller scaled debris mass flows witness the erosional power of the waxing and waning ice sheets and deep ocean currents. The recovered clays, silts, and sands and their microfossils also reveal the transition of subtropical ecosystems and a vegetated Antarctica into sea ice-dominated ecosystems bordered by calving glaciers.",
author = "Hendrik Brinkhuis and Dotti, {Carlota Escutia} and Adam Klaus and Annick Fehr and Trevor Williams and Bendle, {James A.P.} and Bijl, {Peter K.} and Bohaty, {Steven M.} and Carr, {Stephanie A.} and Dunbar, {Robert B.} and Gonz{\`a}lez, {Jhon J.} and Hayden, {Travis G.} and Masao Iwai and Jimenez-Espejo, {Francisco J.} and Kota Katsuki and Kong, {Gee Soo} and McKay, {Robert M.} and Mutsumi Nakai and Olney, {Matthew P.} and Sandra Passchier and Pekar, {Stephen F.} and Jorg Pross and Christina Riesselman and Ursula R{\"o}hl and Toyosaburo Sakai and Shrivastava, {Prakash Kumar} and Stickley, {Catherine E.} and Saiko Sugisaki and Lisa Tauxe and Shouting Tuo and {Van De Flierdt}, Tina and Kevin Welsh and Masako Yamane and Dan Brinkhuis",
year = "2010",
month = "1",
day = "1",
language = "English",
pages = "1--101",
journal = "Integrated Ocean Drilling Program: Preliminary Reports",
issn = "1932-9423",
publisher = "IODP-MI",
number = "318",

}

Brinkhuis, H, Dotti, CE, Klaus, A, Fehr, A, Williams, T, Bendle, JAP, Bijl, PK, Bohaty, SM, Carr, SA, Dunbar, RB, Gonzàlez, JJ, Hayden, TG, Iwai, M, Jimenez-Espejo, FJ, Katsuki, K, Kong, GS, McKay, RM, Nakai, M, Olney, MP, Passchier, S, Pekar, SF, Pross, J, Riesselman, C, Röhl, U, Sakai, T, Shrivastava, PK, Stickley, CE, Sugisaki, S, Tauxe, L, Tuo, S, Van De Flierdt, T, Welsh, K, Yamane, M & Brinkhuis, D 2010, 'Integrated ocean drilling program expedition 318 preliminary report wilkes land glacial history cenozoic east antarctic ice sheet evolution from wilkes land margin sediments', Integrated Ocean Drilling Program: Preliminary Reports, no. 318, pp. 1-101.

Integrated ocean drilling program expedition 318 preliminary report wilkes land glacial history cenozoic east antarctic ice sheet evolution from wilkes land margin sediments. / Brinkhuis, Hendrik; Dotti, Carlota Escutia; Klaus, Adam; Fehr, Annick; Williams, Trevor; Bendle, James A.P.; Bijl, Peter K.; Bohaty, Steven M.; Carr, Stephanie A.; Dunbar, Robert B.; Gonzàlez, Jhon J.; Hayden, Travis G.; Iwai, Masao; Jimenez-Espejo, Francisco J.; Katsuki, Kota; Kong, Gee Soo; McKay, Robert M.; Nakai, Mutsumi; Olney, Matthew P.; Passchier, Sandra; Pekar, Stephen F.; Pross, Jorg; Riesselman, Christina; Röhl, Ursula; Sakai, Toyosaburo; Shrivastava, Prakash Kumar; Stickley, Catherine E.; Sugisaki, Saiko; Tauxe, Lisa; Tuo, Shouting; Van De Flierdt, Tina; Welsh, Kevin; Yamane, Masako; Brinkhuis, Dan.

In: Integrated Ocean Drilling Program: Preliminary Reports, No. 318, 01.01.2010, p. 1-101.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Integrated ocean drilling program expedition 318 preliminary report wilkes land glacial history cenozoic east antarctic ice sheet evolution from wilkes land margin sediments

AU - Brinkhuis, Hendrik

AU - Dotti, Carlota Escutia

AU - Klaus, Adam

AU - Fehr, Annick

AU - Williams, Trevor

AU - Bendle, James A.P.

AU - Bijl, Peter K.

AU - Bohaty, Steven M.

AU - Carr, Stephanie A.

AU - Dunbar, Robert B.

AU - Gonzàlez, Jhon J.

AU - Hayden, Travis G.

AU - Iwai, Masao

AU - Jimenez-Espejo, Francisco J.

AU - Katsuki, Kota

AU - Kong, Gee Soo

AU - McKay, Robert M.

AU - Nakai, Mutsumi

AU - Olney, Matthew P.

AU - Passchier, Sandra

AU - Pekar, Stephen F.

AU - Pross, Jorg

AU - Riesselman, Christina

AU - Röhl, Ursula

AU - Sakai, Toyosaburo

AU - Shrivastava, Prakash Kumar

AU - Stickley, Catherine E.

AU - Sugisaki, Saiko

AU - Tauxe, Lisa

AU - Tuo, Shouting

AU - Van De Flierdt, Tina

AU - Welsh, Kevin

AU - Yamane, Masako

AU - Brinkhuis, Dan

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Understanding the evolution and dynamics of the Antarctic cryosphere, from its inception during the Eocene-Oligocene transition (∼34 Ma) through the significant subsequent periods of likely coupled climate and atmospheric CO2 changes, is not only of major scientific interest but also is of great importance for society. Drilling the Antarctic Wilkes Land margin was designed to provide a long-term record of the sedimentary archives along an inshore to offshore transect of Cenozoic Antarctic glaciation and its intimate relationships with global climatic and oceanographic change. The principal goals were 1. To obtain the timing and nature of the first arrival of ice at the Wilkes Land margin inferred to have occurred during the earliest Oligocene (reflecting Oligocene isotope Event 1), 2. To obtain the nature and age of the changes in the geometry of the prograda- tional wedge interpreted to correspond with large fluctuations in the extent of the East Antarctic Ice Sheet and possibly coinciding with the transition from a wet-based to a cold-based glacial regime, 3. To obtain a high-resolution record of Antarctic climate variability during the late Neogene and Quaternary, and 4. To obtain an unprecedented ultrahigh resolution (i.e., annual to decadal) Holocene record of climate variability. The Wilkes Land drilling program was developed to constrain the age, nature, and paleoenvironment of deposition of the previously only seismically inferred glacial sequences. Drilling the Wilkes Land margin has a unique advantage in that seismic Unconformity WL-U3, inferred to separate preglacial strata below from glacial strata above in the continental shelf, can be traced to the continental rise deposits, allowing sequences to be linked from shelf to rise. Integrated Ocean Drilling Program Expedition 318, carried out in January-March 2010 (Wellington, New Zealand to Hobart, Australia), occupied seven sites that recovered ∼2000 m of high-quality middle Eocene-Holocene sediments at proposed Sites WLRIS-6A, WLRIS-7A, WLRIS-4A, and WLRIS-5A (Sites U1355, U1356, U1359, and U1361) on the Wilkes Land rise and Sites WLSHE-8A, WLSHE-9A, and ADEL-01B (Sites U1358, U1360, and U1357) on the Wilkes Land shelf at water depths between ∼400 and 4000 m. Together, the cores represent ∼53 m.y. of Antarctic history. Recovered cores successfully date the inferred seismic units (WL-S4-WL-S9). The cores reveal the history of the Wilkes Land Antarctic margin from an ice-free "greenhouse Antarctica," to the first cooling, to the onset and erosional consequences of the first glaciation and the subsequent dynamics of the waxing and waning ice sheets, all the way to thick, unprecedented "tree ring style" records with seasonal resolution of the last deglaciation that began ∼10,000 y ago. The cores also reveal details of the tectonic history of the so-called Australo-Antarctic Gulf (at 53 Ma) from the onset of the second phase of rifting between Australia and Antarctica, to ever subsiding margins and deepening, all the way to the present continental and ever widening ocean/continent configuration. Tectonic and climatic change turned the initially shallow broad subtropical Antarctic Wilkes Land shelf into a deeply subsided basin with a narrow, iceinfested margin. Thick Oligocene and notably Neogene deposits, including turbidites, contourites, and larger and smaller scaled debris mass flows witness the erosional power of the waxing and waning ice sheets and deep ocean currents. The recovered clays, silts, and sands and their microfossils also reveal the transition of subtropical ecosystems and a vegetated Antarctica into sea ice-dominated ecosystems bordered by calving glaciers.

AB - Understanding the evolution and dynamics of the Antarctic cryosphere, from its inception during the Eocene-Oligocene transition (∼34 Ma) through the significant subsequent periods of likely coupled climate and atmospheric CO2 changes, is not only of major scientific interest but also is of great importance for society. Drilling the Antarctic Wilkes Land margin was designed to provide a long-term record of the sedimentary archives along an inshore to offshore transect of Cenozoic Antarctic glaciation and its intimate relationships with global climatic and oceanographic change. The principal goals were 1. To obtain the timing and nature of the first arrival of ice at the Wilkes Land margin inferred to have occurred during the earliest Oligocene (reflecting Oligocene isotope Event 1), 2. To obtain the nature and age of the changes in the geometry of the prograda- tional wedge interpreted to correspond with large fluctuations in the extent of the East Antarctic Ice Sheet and possibly coinciding with the transition from a wet-based to a cold-based glacial regime, 3. To obtain a high-resolution record of Antarctic climate variability during the late Neogene and Quaternary, and 4. To obtain an unprecedented ultrahigh resolution (i.e., annual to decadal) Holocene record of climate variability. The Wilkes Land drilling program was developed to constrain the age, nature, and paleoenvironment of deposition of the previously only seismically inferred glacial sequences. Drilling the Wilkes Land margin has a unique advantage in that seismic Unconformity WL-U3, inferred to separate preglacial strata below from glacial strata above in the continental shelf, can be traced to the continental rise deposits, allowing sequences to be linked from shelf to rise. Integrated Ocean Drilling Program Expedition 318, carried out in January-March 2010 (Wellington, New Zealand to Hobart, Australia), occupied seven sites that recovered ∼2000 m of high-quality middle Eocene-Holocene sediments at proposed Sites WLRIS-6A, WLRIS-7A, WLRIS-4A, and WLRIS-5A (Sites U1355, U1356, U1359, and U1361) on the Wilkes Land rise and Sites WLSHE-8A, WLSHE-9A, and ADEL-01B (Sites U1358, U1360, and U1357) on the Wilkes Land shelf at water depths between ∼400 and 4000 m. Together, the cores represent ∼53 m.y. of Antarctic history. Recovered cores successfully date the inferred seismic units (WL-S4-WL-S9). The cores reveal the history of the Wilkes Land Antarctic margin from an ice-free "greenhouse Antarctica," to the first cooling, to the onset and erosional consequences of the first glaciation and the subsequent dynamics of the waxing and waning ice sheets, all the way to thick, unprecedented "tree ring style" records with seasonal resolution of the last deglaciation that began ∼10,000 y ago. The cores also reveal details of the tectonic history of the so-called Australo-Antarctic Gulf (at 53 Ma) from the onset of the second phase of rifting between Australia and Antarctica, to ever subsiding margins and deepening, all the way to the present continental and ever widening ocean/continent configuration. Tectonic and climatic change turned the initially shallow broad subtropical Antarctic Wilkes Land shelf into a deeply subsided basin with a narrow, iceinfested margin. Thick Oligocene and notably Neogene deposits, including turbidites, contourites, and larger and smaller scaled debris mass flows witness the erosional power of the waxing and waning ice sheets and deep ocean currents. The recovered clays, silts, and sands and their microfossils also reveal the transition of subtropical ecosystems and a vegetated Antarctica into sea ice-dominated ecosystems bordered by calving glaciers.

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