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Book Chapter

Bedrock channels in Pine Island Bay, West Antarctica Available to Purchase

Author(s)
F. O. Nitsche, R. D. Larter, K. Gohl, A. G. C. Graham, G. Kuhn
Book: Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient
Series: Geological Society, London, Memoirs
Publisher: Geological Society of London
Published: 01 January 2016
EISBN: 9781862397088
... also contain sinuous channels that are incised deeply into the rock substrate. Description Some prominent examples of channels eroded into exposed bedrock are found in Pine Island Bay in the Amundsen Sea, West Antarctica (Fig. 1 a–c). The channels were first reported by Lowe & Anderson (2003...
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Book Chapter

Corrugation ridges in the Pine Island Bay glacier trough, West Antarctica Available to Purchase

Author(s)
M. Jakobsson, J. B. Anderson
Book: Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient
Series: Geological Society, London, Memoirs
Publisher: Geological Society of London
Published: 01 January 2016
EISBN: 9781862397088
... Glacial landforms with dimensions smaller than the imaging capability of the first-generation multibeam sonars will become a more frequent topic as high-resolution seafloor mapping technology advances. In Pine Island Bay (PIB) glacial trough, West Antarctica, small regular ridges of only a few...
View PDF for content titled, Corrugation ridges in the <span class="search-highlight">Pine</span> <span class="search-highlight">Island</span> <span class="search-highlight">Bay</span> glacier trough, West Antarctica
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Journal Article

Grounding-line retreat of the West Antarctic Ice Sheet from inner Pine Island Bay Available to Purchase

Claus-Dieter Hillenbrand, Gerhard Kuhn, James A. Smith, Karsten Gohl, Alastair G.C. Graham, Robert D. Larter, Johann P. Klages, Rachel Downey, Steven G. Moreton, Matthias Forwick, David G. Vaughan
Journal: Geology
Published: 01 January 2013
Geology (2013) 41 (1): 35–38.
DOI: https://doi.org/10.1130/G33469.1
... within wider context of Antarctica. PIB—Pine Island Bay. © 2012 Geological Society of America 2012 Pine Island Glacier, Thwaites Glacier, and Smith Glacier drain the West Antarctic Ice Sheet (WAIS) into Pine Island Bay in the eastern Amundsen Sea Embayment (ASE) ( Fig. 1 ). Ice loss from...
FIGURES
View PDF for article title, Grounding-line retreat of the West Antarctic Ice Sheet from inner <span class="search-highlight">Pine</span> <span class="search-highlight">Island</span> <span class="search-highlight">Bay</span>
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Journal Article

Geological record of ice shelf break-up and grounding line retreat, Pine Island Bay, West Antarctica Available to Purchase

Martin Jakobsson, John B. Anderson, Frank O. Nitsche, Julian A. Dowdeswell, Richard Gyllencreutz, Nina Kirchner, Rezwan Mohammad, Matthew O'Regan, Richard B. Alley, Sridhar Anandakrishnan, Björn Eriksson, Alexandra Kirshner, Rodrigo Fernandez, Travis Stolldorf, Rebecca Totten, Wojciech Majewski
Journal: Geology
Published: 01 July 2011
Geology (2011) 39 (7): 691–694.
DOI: https://doi.org/10.1130/G32153.1
... Antarctic ice shelves. Do these shelves, with their much greater glacial discharge, have a history of collapse? Here we describe features from the seafloor in Pine Island Bay, West Antarctica, which we interpret as having been formed during a massive ice shelf break-up and associated grounding line retreat...
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View PDF for article title, Geological record of ice shelf break-up and grounding line retreat, <span class="search-highlight">Pine</span> <span class="search-highlight">Island</span> <span class="search-highlight">Bay</span>, West Antarctica
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Journal Article

Morphology and sedimentary processes on the continental slope off Pine Island Bay, Amundsen Sea, West Antarctica Available to Purchase

J.A. Dowdeswell, J. Evans, C. Ó Cofaigh, J.B. Anderson
Journal: GSA Bulletin
Published: 01 May 2006
GSA Bulletin (2006) 118 (5-6): 606–619.
DOI: https://doi.org/10.1130/B25791.1
...J.A. Dowdeswell; J. Evans; C. Ó Cofaigh; J.B. Anderson Abstract Morphology and sedimentation on the Pine Island Bay continental margin, eastern Amundsen Sea, is investigated using swath bathymetry, parametric subbottom profiler (TOPAS) records, and sediment cores. A major cross-shelf trough...
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View PDF for article title, Morphology and sedimentary processes on the continental slope off <span class="search-highlight">Pine</span> <span class="search-highlight">Island</span> <span class="search-highlight">Bay</span>, Amundsen Sea, West Antarctica
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Image
Figure 1. Map of Pine Island Bay sector showing the sampling sites for surface exposure dating. Gray-scale image onshore is part of the MODIS (moderate-resolution imaging spectro-radiometer) Mosaic of Antarctica (National Aeronautics and Space Administration Goddard Space Flight Center). Contours are at 200 m intervals.

Figure 1. Map of Pine Island Bay sector showing the sampling sites for surf... Available to Purchase

Published: 01 March 2008
Figure 1. Map of Pine Island Bay sector showing the sampling sites for surface exposure dating. Gray-scale image onshore is part of the MODIS (moderate-resolution imaging spectro-radiometer) Mosaic of Antarctica (National Aeronautics and Space Administration Goddard Space Flight Center). Contours
Image
Figure 1. Location map of Pine Island Bay and the adjacent continental margin, West Antarctica, showing track lines of the RRS James Clark Ross during cruise JR84. The locations of Figures 4–7, 9, and 12 are shown. Grounded and floating parts of the Antarctic Ice Sheet are shaded dark and light, respectively.

Figure 1. Location map of Pine Island Bay and the adjacent continental marg... Available to Purchase

Published: 01 May 2006
Figure 1. Location map of Pine Island Bay and the adjacent continental margin, West Antarctica, showing track lines of the RRS James Clark Ross during cruise JR84. The locations of Figures 4–7 , 9 , and 12 are shown. Grounded and floating parts of the Antarctic Ice Sheet are shaded dark
Journal Article

Marie Byrd Land, West Antarctica: Evolution of Gondwana's Pacific margin constrained by zircon U-Pb geochronology and feldspar common-Pb isotopic compositions Available to Purchase

Samuel B. Mukasa, Ian W. D. Dalziel
Journal: GSA Bulletin
Published: 01 April 2000
GSA Bulletin (2000) 112 (4): 611–627.
DOI: https://doi.org/10.1130/0016-7606(2000)112<611:MBLWAE>2.0.CO;2
.... In the Kohler Range and the Pine Island Bay areas of eastern Marie Byrd Land, the calc-alkaline magmatism did not terminate until 96 ± 1 Ma, based on U-Pb dating of zircons from one granitoid sample, or 94 ± 3 Ma based on zircons from another. This evidence requires that subduction shut off from west to east...
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View PDF for article title, Marie Byrd Land, West Antarctica: Evolution of Gondwana's Pacific margin constrained by zircon U-Pb geochronology and feldspar common-Pb isotopic compositions
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Journal Article

Ice-sheet extent of the Antarctic Peninsula region during the Last Glacial Maximum (LGM)—Insights from glacial geomorphology Available to Purchase

David C. Heroy, John B. Anderson
Journal: GSA Bulletin
Published: 01 November 2005
GSA Bulletin (2005) 117 (11-12): 1497–1512.
DOI: https://doi.org/10.1130/B25694.1
...-sourced gullies at the mouth of each glacial trough (except Vega Trough, Weddell Sea) supports the interpretation of ice grounded at the shelf break. Megascale glacial lineations imaged in this study and other areas surrounding Antarctica (including the Ross Sea, Pine Island Bay) have a consistent...
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View PDF for article title, Ice-sheet extent of the Antarctic Peninsula region during the Last Glacial Maximum (LGM)—Insights from glacial geomorphology
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Image
Overview map showing track of icebreaker Oden during OSO0910 expedition, and general bathymetry of Pine Island Bay updated from most recent bathymetric compilation (Nitsche et al., 2007). Bathymetric troughs carved by Pine Island and Thwaites paleo-ice streams are marked by arrows. RI—Ross Ice Shelf; FRI—Filchner-Ronne Ice Shelf.

Overview map showing track of icebreaker Oden during OSO0910 expedition, ... Available to Purchase

Published: 01 July 2011
Figure 1. Overview map showing track of icebreaker Oden during OSO0910 expedition, and general bathymetry of Pine Island Bay updated from most recent bathymetric compilation ( Nitsche et al., 2007 ). Bathymetric troughs carved by Pine Island and Thwaites paleo-ice streams are marked by arrows
Image
Analysis of bathymetric profile A-A′ (profile location shown in Fig. 2A). A: Bathymetry derived from multibeam data is shown with green curve. Depth data were detrended before being analyzed (blue curve). Peaks and troughs of corrugation ridges were identified (red stars and black circle, respectively) for further dimensional analysis. B: Calculated distances between the ridges. Mean ridge spacing along profile is 116.5 m and median 101 m; maximum calculated distance between two ridges is 301 m and minimum is 58 m. There is slight increase in distance between ridges from A to A′, as illustrated by red regression line. C: Peak-to-trough heights along bathymetric profile from A to A′. Extracted time series of modeled tidal fluctuations in Pine Island Bay is plotted as comparison, assuming that one corrugation ridge is formed every day (24 h). D: Spectral analysis of calculated ridge heights assuming that one ridge is formed every 24 h. Spectral peaks of modeled tide in Pine Island Bay shown as comparison.

Analysis of bathymetric profile A-A′ (profile location shown in Fig. 2A ).... Available to Purchase

Published: 01 July 2011
A to A′, as illustrated by red regression line. C: Peak-to-trough heights along bathymetric profile from A to A′. Extracted time series of modeled tidal fluctuations in Pine Island Bay is plotted as comparison, assuming that one corrugation ridge is formed every day (24 h). D: Spectral analysis of calculated ridge
Image
Figure 4. Tera-Wasserburg concordia diagrams (Tera and Wasserburg, 1972) of zircon data for Paleozoic and Mesozoic I-type intrusions of the Ruppert and Hobbs coasts, Kohler Range, and Pine Island Bay with inheritances of Precambrian zircon components.

Figure 4. Tera-Wasserburg concordia diagrams ( Tera and Wasserburg, 1972 ) ... Available to Purchase

Published: 01 April 2000
Figure 4. Tera-Wasserburg concordia diagrams ( Tera and Wasserburg, 1972 ) of zircon data for Paleozoic and Mesozoic I-type intrusions of the Ruppert and Hobbs coasts, Kohler Range, and Pine Island Bay with inheritances of Precambrian zircon components.
Image
Figure 4. Seismic profiles acquired along a SSE to NNW transect between 108°20′W to 108°30′W and a reciprocal NNW to SSE transect, outer Pine Island Bay continental shelf and upper continental slope (located in Fig. 1).

Figure 4. Seismic profiles acquired along a SSE to NNW transect between 108... Available to Purchase

Published: 01 May 2006
Figure 4. Seismic profiles acquired along a SSE to NNW transect between 108°20′W to 108°30′W and a reciprocal NNW to SSE transect, outer Pine Island Bay continental shelf and upper continental slope (located in Fig. 1 ).
Image
Figure 5. Histogram illustrating the crest-to-crest spacing of megascale glacial lineations surrounding Antarctica (Ross Sea, Pine Island Bay, Antarctic Peninsula, and northern Weddell Sea) observed exclusively on sedimentary substrate (Fig. 3) of the outer continental shelf. Spacings of grooves and/or bundles are not included in this graph.

Figure 5. Histogram illustrating the crest-to-crest spacing of megascale gl... Available to Purchase

Published: 01 November 2005
Figure 5. Histogram illustrating the crest-to-crest spacing of megascale glacial lineations surrounding Antarctica (Ross Sea, Pine Island Bay, Antarctic Peninsula, and northern Weddell Sea) observed exclusively on sedimentary substrate (Fig. 3) of the outer continental shelf. Spacings of grooves
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Known and inferred extents of provinces and domains in the Antarctic Peninsula (AP); Domain boundary offsets in the vicinity of Marguerite Bay (MB) and south of Bransfield Strait (BS) are from later segmentation of the arc and appear to be controlled by the onshore propagation of fracture zones in oceanic lithosphere (Johnson &amp; Swain 1995). CD Central Domain; CL Coats Land; ED Eastern Domain; HN Haag Nunataks; PIB Pine Island Bay area; WD Western Domain; WSE Weddell Sea Embayment.

Known and inferred extents of provinces and domains in the Antarctic Penins... Available to Purchase

Published: 01 November 2000
zones in oceanic lithosphere ( Johnson & Swain 1995). CD Central Domain; CL Coats Land; ED Eastern Domain; HN Haag Nunataks; PIB Pine Island Bay area; WD Western Domain; WSE Weddell Sea Embayment.
Image
Figure 2. Bathymetric profiles from the shelf edge down the continental slope offshore of Pine Island Bay, including slope profiles: (A) in front of the eastern side of the cross-shelf trough; (B) in front of the western side of the cross-shelf trough; (C) the trough margin to the west of the cross-shelf trough; (D) between western and eastern gully-channel systems; and (E) eastern gully-channel system. The profiles are located in Figure 3.

Figure 2. Bathymetric profiles from the shelf edge down the continental slo... Available to Purchase

Published: 01 May 2006
Figure 2. Bathymetric profiles from the shelf edge down the continental slope offshore of Pine Island Bay, including slope profiles: (A) in front of the eastern side of the cross-shelf trough; (B) in front of the western side of the cross-shelf trough; (C) the trough margin to the west of the cross
Image
Figure 3. (A) EM120 color-contoured sun-illuminated swath bathymetry image of the outer shelf, shelf edge, and slope off Pine Island Bay (contoured at 100 m intervals), with its location in relation to West Antarctica shown in the inset map. (B) EM120 sun-illuminated swath bathymetry image of the same area showing the morphological features in the main continental margin study area. The locations of the five slope profiles shown in Figure 2A–E, together with Figures 5–7, are indicated.

Figure 3. (A) EM120 color-contoured sun-illuminated swath bathymetry image ... Available to Purchase

Published: 01 May 2006
Figure 3. (A) EM120 color-contoured sun-illuminated swath bathymetry image of the outer shelf, shelf edge, and slope off Pine Island Bay (contoured at 100 m intervals), with its location in relation to West Antarctica shown in the inset map. (B) EM120 sun-illuminated swath bathymetry image
Image
Figure 5. (A) EM120 swath bathymetric images of the outer shelf, shelf edge, and slope in front of and beyond the margins of the major cross-shelf trough (∼113°–114°W), illustrating the gully-channel system on the slope and megascale glacial lineations within the trough. The location of the topographic parametric sonar (TOPAS) subbottom profile in Figure 8A is illustrated. The location of this Figure is shown in Figures 1 and 3. (B) Enlarged image of the shelf edge, showing gullies cut back into the continental shelf of Pine Island Bay. The 600 m contour is located.

Figure 5. (A) EM120 swath bathymetric images of the outer shelf, shelf edge... Available to Purchase

Published: 01 May 2006
of the topographic parametric sonar (TOPAS) subbottom profile in Figure 8A is illustrated. The location of this Figure is shown in Figures 1 and 3 . (B) Enlarged image of the shelf edge, showing gullies cut back into the continental shelf of Pine Island Bay. The 600 m contour is located.
Image
(A) Amundsen Sea sector of the West Antarctic Ice Sheet. Orange shading highlights major ice streams using ice velocities (darker orange is faster ice). Black dots are locations of sediment cores from which radiocarbon ages in Figure 3 and Table S6 (see text footnote 1) were sourced. Black circle shows two nearest sediment cores (PS75/214–1 and PS75/160–1; Hillenbrand et al., 2013) to Pine Island Glacier. Gray line is Pine Island Trough (PIT). Black bars are grounding zone wedges in PIT (see Fig. 3; Graham et al., 2010). Purple diamonds show sampling locations of Braddock et al. (2022). Bathymetry was sourced from BedMachine V2 (Morlighem et al., 2020). Ice velocities and grounding line position were sourced from MEaSUREs program V2 (Rignot et al., 2011, 2017; Mouginot et al., 2012, 2017). PIB—Pine Island Bay. (B) Hudson Mountains. Circles show nunataks sampled for this (colored) and previous studies (gray; Johnson et al., 2008, 2014). Shepherd and Winkie are Shepherd Dome and Winkie Nunatak, respectively. Arrow showing direction of Pine Island Glacier is approximate centerline used in Figure S1 to determine relative sample elevations (see text footnote 1). Copernicus Sentinel satellite imagery is courtesy of European Space Agency. Maps were generated using data sets from Quantarctica V3 (Matsuoka et al., 2021).

(A) Amundsen Sea sector of the West Antarctic Ice Sheet. Orange shading hig... Open Access

Published: 17 August 2023
al. (2022) . Bathymetry was sourced from BedMachine V2 ( Morlighem et al., 2020 ). Ice velocities and grounding line position were sourced from MEaSUREs program V2 ( Rignot et al., 2011 , 2017 ; Mouginot et al., 2012 , 2017 ). PIB—Pine Island Bay. (B) Hudson Mountains. Circles show nunataks
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Figure 8. (A) 207Pb/204Pb vs. 206Pb/204Pb and (B) 208Pb/204Pb vs. 206Pb/204Pb variation diagrams for feldspar mineral separates from granitoids of the Marie Byrd Land (MBL) and Thurston Island crustal blocks. The dark symbols are for rocks from western Marie Byrd Land (Ruppert Coast), the gray symbols for central Marie Byrd Land (Kohler Range), open symbols for eastern Marie Byrd Land (Pine Island Bay), and dotted symbol for a single granitoid from the Thurston Island crustal block. Squares—granites, upright triangles—monzonites, inverted triangles—granodiorites, rhombs—diorites, and circles—syenites and quartz syenites. For comparison, several fields have been included: Peruvian granitoids (Mukasa, 1986); Antarctic Peninsula granitoids (Tangeman et al., 1996); Arequipa-Antofalla basement rocks (Tilton and Barreiro, 1980; Tosdal, 1996); Pacific sediments (Reynolds and Dasch, 1971; Dasch, 1981); Nazca plate basalts (Unruh and Tatsumoto, 1976); and Marie Byrd Land Cenozoic lavas (Mukasa, 1995). The Northern Hemisphere reference line (NHRL) is from Hart (1984) and the mantle end members enriched mantle of types 1 and 2 (EM1 and EM2, respectively), depleted mantle material (DMM), and high 238U/204Pb or µ (HIMU) are from Zindler and Hart (1986).

Figure 8. (A) 207 Pb/ 204 Pb vs. 206 Pb/ 204 Pb and (B) 208 Pb/ 204 Pb v... Available to Purchase

Published: 01 April 2000
), the gray symbols for central Marie Byrd Land (Kohler Range), open symbols for eastern Marie Byrd Land (Pine Island Bay), and dotted symbol for a single granitoid from the Thurston Island crustal block. Squares—granites, upright triangles—monzonites, inverted triangles—granodiorites, rhombs—diorites