Magnetobiostratigraphic chronology and palaeoenvironmental history of Cenozoic sequences from ODP sites 1165 and 1166, Prydz Bay, Antarctica

Florindo, Fabio; Bohaty, Steven M; Erwin, Patrick S.; Richter, Carl; Roberts, Andrew P.; Whalen, Patricia A.; Whitehead, Jason

doi:10.1016/s0031-0182(03)00395-x

Cited by 53 publications

(68 citation statements)

References 60 publications

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“…Ages reported by both Florindo et al (2003) and Acton et al (2002) are consistent with the geomagnetic polarity time scale (GPTS) of Cande and Kent (1995). In order to compare the time series for Site 1165 with orbitally tuned paleoceanographic records from other ocean basins we use here the astronomical calibrated time scale of Hilgen et al (1995), which deviates only slightly from the GPTS (Table 1) for the interval we are interested in.…”

Section: Stratigraphymentioning

confidence: 89%

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Terrigenous flux and biogenic silica deposition at the Antarctic continental rise during the late Miocene to early Pliocene: implications for ice sheet stability and sea ice coverage

Grützner

Hillenbrand

Rebesco

2005

Global and Planetary Change

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Drift sediments recovered from the East Antarctic continental rise at Ocean Drilling Program (ODP) Site 1165 are used to infer variations in East Antarctic Ice Sheet (EAIS) stability and sea ice coverage during the late Miocene and early Pliocene. A significant increase in the deposition of biogenic opal from~5.8 to 5.2 Ma points to an early Pliocene reduction in sea ice and a subsequent increase in biological productivity. Time intervals at~7.2 to 6.6 Ma and~5.2 to 4.8 Ma are characterized by pronounced maxima in the long-term trend of terrigenous matter accumulation (MAR ter ) indicating high continental erosion rates potentially caused by ice sheet growth. A Southern Ocean wide impact of these events is suggested by similar evidence found at ODP Site 1095 (Antarctic Peninsula). Superimposed on the MAR ter maxima we observe enhanced orbital variability in iron accumulation at Site 1165 pointing to a dynamic behavior of the EAIS with waxing and waning ice masses. From the concurrence of these high amplitude ice sheet fluctuations with maximum variance in Earth's obliquity, we propose that the insolation gradient between high and low latitudes affected the delivery of moisture to Antarctica and thus controlled ice volume variations. D

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Section: Stratigraphymentioning

confidence: 89%

“…The time series presented for Sites 1165 were calculated by linear interpolation between age control points resulting from the integration of the microfossil biostratigraphy and paleomagnetic data (Florindo et al, 2003).…”

Section: Stratigraphymentioning

confidence: 99%

Terrigenous flux and biogenic silica deposition at the Antarctic continental rise during the late Miocene to early Pliocene: implications for ice sheet stability and sea ice coverage

Grützner

Hillenbrand

Rebesco

2005

Global and Planetary Change

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“…Magneto-, bio-, and tephrochronology will enable identification of orbital-scale ice sheet variations and have been employed in discontinuous Antarctic margin sequences (Florindo et al, 2003(Florindo et al, , 2005Tauxe et al, 2012;Wilson et al, 2012) (Figure F4). Furthermore, new quantitative techniques have greatly enhanced the biostratigraphic framework of the Southern Ocean (Cody et al, , 2008Crampton et al, 2016).…”

Section: Evaluate the Contribution Of West Antarctica To Far-field Icmentioning

confidence: 99%

“…Sediment deposition on Antarctica's continental rises results from the interplay among (1) downslope marine sediment gravity flows (turbidity currents) triggered by glacial meltwater discharge and/or subglacial transport (Lucchi et al, 2007), (2) along-slope transport (contour currents), (3) biogenic sedimentation (Escutia, Brinkhuis, Klaus, and the Expedition 318 Scientists, 2011), and (4) iceberg rafting (Anderson 1999;Williams et al, 2012;Passchier et al, 2011 (Florindo et al, 2003;Escutia, Brinkhuis, Klaus, and the Expedition 318 Scientists, 2011;Tauxe et al, 2012) and provide records of EAIS retreat events Cook et al, 2013). However, these locations do not offer paired high-resolution Neogene continental shelf records suitable for reconstructing the oceanographic response/drivers for changes in ice sheet extent.…”

Section: Continental Slope/rise (Rscr) Sitesmentioning

confidence: 99%

Untitled

McKay¹,

Santis²,

Kulhanek³

2017

International Ocean Discovery Program Scientific Prospectus

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Observations from the past several decades indicate that the Southern Ocean is warming significantly and that Southern Hemisphere westerly winds have migrated southward and strengthened due to increasing atmospheric CO 2 concentrations and/or ozone depletion. These changes have been linked to thinning of Antarctic ice shelves and marine terminating glaciers. Results from geologic drilling on Antarctica's continental margins show late Neogene marine-based ice sheet variability, and numerical models indicate a fundamental role for oceanic heat in controlling this variability over at least the past 20 My. Although evidence for past ice sheet variability has been observed in marginal settings, sedimentological sequences from the outer continental shelf are required to evaluate the extent of past ice sheet variability and the role of oceanic heat flux in controlling ice sheet mass balance.

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“…in the midMiocene to 10 m/m.y. during the Plio-Pleistocene (Shipboard Scientific Party, 2001c;Florindo et al, 2003;Fig. PB-4).…”

Section: Ice-sheet Development (Oligocene-miocene)mentioning

confidence: 99%

Chapter 5 Cenozoic Climate History from Seismic Reflection and Drilling Studies on the Antarctic Continental Margin

Cooper

Brancolini

Escutia

et al. 2008

Antarctic Climate Evolution

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Magnetobiostratigraphic chronology and palaeoenvironmental history of Cenozoic sequences from ODP sites 1165 and 1166, Prydz Bay, Antarctica

Cited by 53 publications

References 60 publications

Terrigenous flux and biogenic silica deposition at the Antarctic continental rise during the late Miocene to early Pliocene: implications for ice sheet stability and sea ice coverage

Terrigenous flux and biogenic silica deposition at the Antarctic continental rise during the late Miocene to early Pliocene: implications for ice sheet stability and sea ice coverage

Untitled

Chapter 5 Cenozoic Climate History from Seismic Reflection and Drilling Studies on the Antarctic Continental Margin

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