Seismic stratigraphy of the Plio-Pleistocene Ross Island flexural moat-fill: a prognosis for ANDRILL Program drilling beneath McMurdo-Ross Ice Shelf

Horgan, Huw; Naish, T.; Bannister, Stephen; Balfour, N.; Wilson, Gary

doi:10.1016/j.gloplacha.2004.09.014

Cited by 51 publications

(61 citation statements)

References 18 publications

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“…Termed a "flexural moat", this basin is believed to have formed through a combination of localized lithospheric loads emplaced by the development of Ross Island's volcanoes, beginning around 4.6 m.y., superimposed on the regional pattern of rift subsidence (Stern et al, 1991;Horgan et al, 2005). The drill site is situated within the Terror Rift, which lies near the western margin of the larger Victoria Land Basin (Figure 1), one of the three major north-south trending sedimentary basins that form the West Antarctic Rift System.…”

Section: Regional Geotectonic Setting Of the And-1b Drill Sitementioning

confidence: 99%

Late Cenozoic oscillations of Antarctic ice sheets revealed by provenance of basement clasts and grain detrital modes in ANDRILL core AND-1B

Talarico

McKay

Powell

et al. 2012

Global and Planetary Change

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Section: Regional Geotectonic Setting Of the And-1b Drill Sitementioning

confidence: 99%

Late Cenozoic oscillations of Antarctic ice sheets revealed by provenance of basement clasts and grain detrital modes in ANDRILL core AND-1B

Talarico

McKay

Powell

et al. 2012

Global and Planetary Change

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“…Recently, new seismic reflection data have been acquired as part of the preparations for the ANDRILL MIS project south of Ross Island (Naish et al, 2006), and a seismic stratigraphic analysis was reported by Horgan et al (2005). An extensive, multi-channel seismic reflection survey was also conducted in 2004 (RVIB Nathaniel B. Palmer cruise 0401; Wilson et al, 2004) to provide data in areas previously uninvestigated by seismic reflection traverses (Figure 1).…”

Section: Stratigraphic Frameworkmentioning

confidence: 99%

“…Some more site-specific seismic facies analysis and modeling was carried out by Bartek et al (1997) in the central and eastern parts of the West Antarctic Rift, and details of seismic facies in the area of the CIROS-1 and MSSTS-1 drillholes were provided by Bartek et al (1996) and Bucker et al (1998). More recently, seismic facies in the youngest part of the stratigraphic section, in southern McMurdo Sound, were evaluated by Horgan et al (2005) and Whittaker (2005). The present work draws on these previous studies, and extends both the array of seismic facies recognized and the stratigraphic range to include the entire Cenozoic.…”

Section: Seismic Faciesmentioning

confidence: 99%

“…They are, in ascending order, the red horizon and the turquoise horizon (which corresponds to reflector A1 of Horgan et al (2005) from south of Hut Point Peninsula. Considerable attention has already been given to these intervals by Whittaker (2005), Horgan et al (2005), and Naish et al (2006), as they form the target intervals for the first ANDRILL campaign on McMurdo Ice Shelf (MIS). These authors have indeed recognized further seismic horizons that they have traced over discrete project areas.…”

Section: Renewed Rifting (Terror Rift) Interval Upper Part (Dark Grementioning

confidence: 99%

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Seismic facies and stratigraphy of the Cenozoic succession in McMurdo Sound, Antarctica: Implications for tectonic, climatic and glacial history

Fielding

Whittaker

Henrys

et al. 2008

Palaeogeography, Palaeoclimatology, Palaeoecology

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Follow this and additional works at: http://digitalcommons.unl.edu/geosciencefacpub Part of the Earth Sciences CommonsThis Article is brought to you for free and open access by the Earth and Atmospheric Sciences, Department of at DigitalCommons@University of Nebraska -Lincoln. It has been accepted for inclusion in Papers in the Earth and Atmospheric Sciences by an authorized administrator of DigitalCommons@University of Nebraska -Lincoln.Fielding, Christopher R.; Whittaker, Joanne; Henrys, Stuart A.; Wilson, Terry J.; and Naish, Timothy R., "Seismic facies and stratigraphy of the Cenozoic succession in McMurdo Sound, Antarctica: Implications for tectonic, climatic and glacial history" (2008 AbstractIntegration of data from fully cored stratigraphic holes with an extensive grid of seismic reflection lines in McMurdo Sound, Antarctica, has allowed the formulation of a new model for the evolution of the Cenozoic Victoria Land Basin of the West Antarctic Rift. The Early Rift phase (Eocene to Early Oligocene) is recorded by wedges of strata confined by early extensional faults, and which contain seismic facies consistent with drainage via coarse-grained fans and deltas into discrete, actively subsiding grabens and half-grabens. The Main Rift phase (Early Oligocene to Early Miocene) is represented by a lens of strata that thickens symmetrically from the basin margins into a central depocenter, and in which stratal events pass continuously over the top of the Early Rift extensional topography. Internal seismic facies and lithofacies indicate a more organized, cyclical shallow marine succession, influenced increasingly upward by cycles of glacial advance and retreat into the basin. The Passive Thermal Subsidence phase (Early Middle Miocene) is recorded by an evenly distributed sheet of strata that thickens somewhat into the depocenter but is continuous across and over the earlier rift strata to the margins of the basin. Internally, it contains similar facies to the underlying Main Rift, but preserves more evidence for clinoform sets and large channels, and in core comprises many short, condensed and strongly top-truncated stratal cycles with continued, periodic glacial influence. These patterns are interpreted to record accumulation under similar environmental conditions but in a regime of slower subsidence. The Renewed Rifting phase (Middle Miocene to Recent, largely unsampled by coring thus far) is represented by intervals that thicken significantly into the basin depocenter and that are complicated by evidence of magmatic activity (McMurdo Volcanic Group). This succession is further divided into lower and upper intervals, separated by a major unconformity that displays increasing angular discordance towards the western basin margin and Transantarctic Mountain Front. The youngest part of the stratigraphy was accumulated under the influence of flexural loading imposed by the construction of large volcanic edifices, and was formed in an environment in which little sediment was supplied from the western basin margin, su...

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“…This geometry is evident in strike and dip seismic profiles [Horgan et al, 2005;Fielding et al, 2007]. The diverse range of rock types recovered includes diamictites (poorly sorted deposits associated with glacial processes), sand stones and mudstones, diatomites (siliceous microfossil deposits), volcanic ash, and one lava flow (Figure 1).…”

Section: The Mcmurdo Ice Shelf Projectmentioning

confidence: 91%

A record of Antarctic climate and ice sheet history recovered

et al. 2007

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Antarctica's late Cenozoic (the past ∼15 million years) climate history is poorly known from direct evidence, owing to its remoteness, an extensive sea ice apron, and an ice sheet cover over the region for the past 34 million years. Consequently, knowledge about the role of Antarctica's ice sheets in global sea level and climate has relied heavily upon interpretations of oxygen isotope records from deep‐sea cores. Whereas these isotopic records have revolutionized our understanding of climate‐ice‐ocean interactions, questions still remain about the specific role of Antarctic ice sheets in global climate. Such questions can be addressed from geological records at the marine margin of the ice sheets, recovered by drilling from floating ice platforms [e.g., Davey et al., 2001; Harwood et al., 2006; Barrett, 2007].

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Seismic stratigraphy of the Plio-Pleistocene Ross Island flexural moat-fill: a prognosis for ANDRILL Program drilling beneath McMurdo-Ross Ice Shelf

Cited by 51 publications

References 18 publications

Late Cenozoic oscillations of Antarctic ice sheets revealed by provenance of basement clasts and grain detrital modes in ANDRILL core AND-1B

Late Cenozoic oscillations of Antarctic ice sheets revealed by provenance of basement clasts and grain detrital modes in ANDRILL core AND-1B

Seismic facies and stratigraphy of the Cenozoic succession in McMurdo Sound, Antarctica: Implications for tectonic, climatic and glacial history

A record of Antarctic climate and ice sheet history recovered

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