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Beardmore Group

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Journal Article

Age and Provenance of the Beardmore Group, Antarctica: Constraints on Rodinia Supercontinent Breakup

J. W. Goodge, P. Myrow, I. S. Williams, S. A. Bowring
Published: 01 July 2002
The Journal of Geology (2002) 110 (4): 393–406.
DOI: https://doi.org/10.1086/340629
...J. W. Goodge; P. Myrow; I. S. Williams; S. A. Bowring Abstract New U-Pb ages for detrital and igneous zircons constrain the depositional age and sedimentary provenance of the Beardmore Group, a siliciclastic succession that records transformation of the East Antarctic margin during Rodinia breakup...
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Includes: Supplemental Content
Journal Article

Timing of events during the late Proterozoic Beardmore Orogeny, Antarctica: Geological evidence from the La Gorce Mountains

EDMUND STUMP, J. H. SMIT, STEPHEN SELF
Journal: GSA Bulletin
Published: 01 August 1986
GSA Bulletin (1986) 97 (8): 953–965.
DOI: https://doi.org/10.1130/0016-7606(1986)97<953:TOEDTL>2.0.CO;2
...EDMUND STUMP; J. H. SMIT; STEPHEN SELF Abstract The Beardmore Orogeny previously has been designated for deformational and magmatic activity that occurred during the late Proterozoic in the central Transantarctic Mountains. It is recognized in folding of Beardmore Group turbidites, unconformably...
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Age, Correlation, and Provenance of the Neoproterozoic Skelton Group, Antarctica: Grenville Age Detritus on the Margin of East Antarctica

R. J. Wysoczanski, A. H. Allibone
Published: 01 July 2004
The Journal of Geology (2004) 112 (4): 401–416.
DOI: https://doi.org/10.1086/421071
... amphibolite facies metamorphism at ca. 505–480 Ma, although older ca. 550-Ma metamorphic zircon rims indicate an earlier episode of high-grade metamorphism. Detrital zircon ages from the Skelton Group are dominated by ca. 1300–950-Ma ages similar to those in the Beardmore Group in East Antarctica...
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Depositional history of pre-Devonian strata and timing of Ross orogenic tectonism in the central Transantarctic Mountains, Antarctica

Paul M. Myrow, Michael C. Pope, John W. Goodge, Woodward Fischer, Alison R. Palmer
Journal: GSA Bulletin
Published: 01 September 2002
GSA Bulletin (2002) 114 (9): 1070–1088.
DOI: https://doi.org/10.1130/0016-7606(2002)114<1070:DHOPDS>2.0.CO;2
... across a narrow marine margin underlain by Precambrian basement. Siliciclastic deposits of the Neoproterozoic Beardmore Group—here restricted to the Cobham Formation and those rocks of the Goldie Formation that contain no detrital components younger than ca. 600 Ma—occupied an inboard zone to the west...
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Provenance of Neoproterozoic and lower Paleozoic siliciclastic rocks of the central Ross orogen, Antarctica: Detrital record of rift-, passive-, and active-margin sedimentation

John W. Goodge, Ian S. Williams, Paul Myrow
Journal: GSA Bulletin
Published: 01 September 2004
GSA Bulletin (2004) 116 (9-10): 1253–1279.
DOI: https://doi.org/10.1130/B25347.1
... of East Antarctica. New U-Pb detrital-zircon ages constrain both the depositional age and sedimentary provenance of these strata. In the central Trans-antarctic Mountains, mature quartz arenites of the late Neoproterozoic Beardmore Group contain Archean and Proterozoic zircons, reflecting distal input...
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Figure 2. Stratigraphic relationships of Neoproterozoic and lower Paleozoic...

Figure 2. Stratigraphic relationships of Neoproterozoic and lower Paleozoic...

Published: 01 September 2004
reflects field observations, fossil discoveries, and radiometric age constraints presented elsewhere ( Goodge et al., 2002 ; Myrow et al., 2002b ). Byrd Group consists of Shackleton Limestone, Holyoake Formation, Douglas Conglomerate, and Starshot Formation. Most rocks originally mapped as Beardmore Group
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Concordia diagram showing U-Pb analyses of individual zircons from <span class="search-highlight">Beardmor</span>...

Concordia diagram showing U-Pb analyses of individual zircons from Beardmor...

Published: 01 July 2002
Figure 4. Concordia diagram showing U-Pb analyses of individual zircons from Beardmore Group gabbro at Cotton Plateau.
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Proposed stratigraphic revision of Neoproterozoic and lower Paleozoic sedim...

Proposed stratigraphic revision of Neoproterozoic and lower Paleozoic sedim...

Published: 01 July 2002
as belonging to the Beardmore Group. The ages of the units are also constrained by new fossil discoveries and observed stratigraphic relationships (see Myrow et al. 2002 ). In the revised scheme, our “inboard” Goldie should be considered Goldie Formation sensu stricto. It has a Neoproterozoic age and, along
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Comparison of the detrital zircon components from the Union Glacier Formati...

Comparison of the detrital zircon components from the Union Glacier Formati...

Published: 14 July 2017
Figure 9. Comparison of the detrital zircon components from the Union Glacier Formation and the Beardmore and Skelton Groups: relative probability density plot (gray area) and kernel density estimator (black line). The inset shows the central Rodinia reconstruction at ca. 800–750 Ma after Goodge
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( 1 ) Map of Antarctica showing approximate extent of the Transantarctic Mo...

( 1 ) Map of Antarctica showing approximate extent of the Transantarctic Mo...

Published: 01 May 2019
Figure 1. ( 1 ) Map of Antarctica showing approximate extent of the Transantarctic Mountains and area shown in ( 2 ). ( 2 ) Map of Nimrod Glacier, Holyoake Range, and Churchill Mountains. ( 3 ) Generalized relationship of Cambrian (Byrd Group) and Neoproterozoic (Beardmore Group) rock units
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General geology of the central Transantarctic Mountains between Byrd and Be...

General geology of the central Transantarctic Mountains between Byrd and Be...

Published: 01 July 2002
Figure 1. General geology of the central Transantarctic Mountains between Byrd and Beardmore glaciers, showing locations of dated samples. Inset shows location in Antarctica. Beardmore Group is divided into two depositional assemblages, inboard and outboard, based on geographic position
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Figure 16. Inferred age relationships of previously defined units in the ce...

Figure 16. Inferred age relationships of previously defined units in the ce...

Published: 01 September 2002
Formation that is restricted to deposits older than the Shackleton Limestone (Beardmore Group)
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Figure 12. Correlation of stratigraphic units and summary of detrital-zirco...

Figure 12. Correlation of stratigraphic units and summary of detrital-zirco...

Published: 01 September 2004
summarized by black bars. Geochronologic constraints indicate that the Beardmore Group is certainly younger than 1000 Ma and, in part, 668 Ma or younger, but its minimum age is unknown and could be as young as Early Cambrian. Both the Shackleton Limestone and Holyoake Formation are biostratigraphically
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Relative probability histograms of detrital zircon U-Pb ages from <span class="search-highlight">Beardmore</span>...

Relative probability histograms of detrital zircon U-Pb ages from Beardmore...

Published: 01 July 2002
Figure 3. Relative probability histograms of detrital zircon U-Pb ages from Beardmore Group samples. As in figure 1 , samples are grouped by assemblage. Histograms were constructed according to Dodson et al. ( 1988 ). The ages assigned to the peaks were derived from multicomponent mixture
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Inferred extent of major Precambrian basement provinces within East Antarct...

Inferred extent of major Precambrian basement provinces within East Antarct...

Published: 01 July 2004
in the Skelton and Beardmore Groups are located on the opposite side of the Archean-Paleoproterozoic Mawson Continent or the opposite margin of East Antarctica. The dashed line represents three possible extensions of the Pinjarra Orogen into East Antarctica (Fitzsimons 2003 ). HM , Horlick Mountains; MR
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A , Geologic linkages between basement provinces in East Antarctica, Austra...

A , Geologic linkages between basement provinces in East Antarctica, Austra...

Published: 01 September 2010
on Laurentia. General outline based on paleomagnetic fit of Dalziel ( 1997 ). Coats Land position defined by paleomagnetic pole at 1100 Ma (Gose et al. 1997 ). The position of the Kalahari Craton at ∼1 Ga is consistent with paleomagnetic data of Gose et al. ( 2006 ). Geologic features: B = Beardmore Group
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Paleogeographic setting of East Antarctica in a Neoproterozoic SWEAT (south...

Paleogeographic setting of East Antarctica in a Neoproterozoic SWEAT (south...

Published: 01 September 2010
( black ). CL = Coats Land, DG = Denman Glacier; DML = Dronning Maud Land, GSM = Gamburtsev Subglacial Mountains, PB = Prydz Bay, SR = Shackleton Range, T = Tasmania, and TA = Terre Adélie. Geologic features and provinces: B = Beardmore Group, D = Delamerian Orogen, G = Gawler Craton
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Reconstruction of part of Gondwana at ca. 300 Ma showing major tectonic fea...

Reconstruction of part of Gondwana at ca. 300 Ma showing major tectonic fea...

Published: 14 July 2017
zircon age compilation of possible source areas (only igneous and metamorphic rocks). Arrows indicate direction of sediment transport, and their different lengths represent the relative distances inferred for the sediment transport paths. The Beardmore Group gabbro and Skelton Group rhyolite are the rift
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Stacked relative age probability diagrams (Ludwig 2008 ) for U-Pb igneous ...

Stacked relative age probability diagrams (Ludwig 2008 ) for U-Pb igneous ...

Published: 01 May 2018
and Beardmore Groups ( A ) from Stump et al. ( 2007 ) and Paulsen et al. ( 2015 , 2017 ); for the Byrd Group ( B ) from Goodge et al. ( 2002 , 2004 b ) and Paulsen et al. ( 2017 ); and for the Skelton Group ( C ) from Stump et al. ( 2007 ), Cooper et al. ( 2011 ), and Paulsen et al. ( 2017 ). Volcanic
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Figure 13. Model of the late Neoproterozoic and early Paleozoic tectonic ev...

Figure 13. Model of the late Neoproterozoic and early Paleozoic tectonic ev...

Published: 01 September 2004
by marginal-basin sedimentation of shoreline and shallow-marine deposits (Beardmore Group). Age of rifting onset unknown, but volcanism and sedimentation occurred by at least 670 Ma ( Goodge et al., 2002 ). (B) Platform and incipient arc stage, represented by discontinuous deposition of Lower Cambrian shelf