On the Late Precambrian-Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Mountains, Antarctica, and a Comparison With Rocks of Similar Age for Southern Africa
The non-intrusive portion of the late Precambrian-early Paleozoic basement complex in the Queen Maud Mountains, Antarctica, consists of graywacke-shale sequences of the Beardmore Group (Goldie, Duncan, and LaGorce Formations), rhyolite porphyries of the Wyatt Formation, and rhyolite porphyries, mino...
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Institute of Polar Studies, The Ohio State University
1976
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ftohiostateu:oai:kb.osu.edu:1811/54226 2023-05-15T14:04:31+02:00 On the Late Precambrian-Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Mountains, Antarctica, and a Comparison With Rocks of Similar Age for Southern Africa Stump, Edmund 1976-12 application/pdf http://hdl.handle.net/1811/54226 en_US eng Institute of Polar Studies, The Ohio State University Institute of Polar Studies Report No. 62 Stump, Edmund. 1976. On the Late Precambrian - Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Land, Antarctica, and a Comparison with Rocks of Similar Age for Southern Africa. Institute of Polar Studies Report No. 62, Institute of Polar Studies, The Ohio State University, 212 pages. 0078-415X http://hdl.handle.net/1811/54226 Ross Orogen Metavolcanic rocks--Queen Maud Land Antarctica Metasedimentary rocks--Queen Maud Land Damara Orogen Technical Report Map 1976 ftohiostateu 2020-08-22T19:40:16Z The non-intrusive portion of the late Precambrian-early Paleozoic basement complex in the Queen Maud Mountains, Antarctica, consists of graywacke-shale sequences of the Beardmore Group (Goldie, Duncan, and LaGorce Formations), rhyolite porphyries of the Wyatt Formation, and rhyolite porphyries, minor basalts and carbonate, clastic and volcaniclastic metasedimentary rocks of the Taylor and Fairweather Formations. A model for the evolution of the Ross Orogen between Byrd Glacier and the Pensacola Mountains is presented combining results of this study with published reports from adjacent areas. The deep-sea fan deposits of the Beardmore Group are conformably overlain and intruded by extrusive and hypabyssal portions of the Wyatt Formation. An arc of volcanic islands producing ash-flow tuffs, ash-fall tuffs and lavas, and minor basaltic lavas was active in the early Cambrian. Sediments accumulated in association with the volcanic rocks. All of these rocks were deformed, intruded and metamorphosed to varying degrees during the Ross Orogeny which ended by middle Ordovician. Rocks of the Damara Orogen of southern Africa were probably linearly continuous with the Ross Orogen prior to the breakup of Gondwanaland. A clastic pulse recognized in late Precambrian sediments in the Cape, the Vanrhynsdorp area and the Nama Basin is interpreted as representing the initiation of the Damara Orogeny in South and South West Africa. A comparison of the evolution of the Ross and Damara Orogens concludes that the Cape region in South Africa occupied a tectonic regime transitional between the regime of cratonic collision in South West Africa, where orogeny was sustained from the late Precambrian to the middle Orodovician, and the regime of subduction of oceanic crust beneath a continental margin in Antarctica, where two episodes of sedimentation and deformation occurred. National Science Foundation Grants GV-26652, GV-33767 and OPP74-04897 Report Antarc* Antarctica Byrd Glacier Queen Maud Land Ohio State University (OSU): Knowledge Bank Byrd Queen Maud Land ENVELOPE(12.000,12.000,-72.500,-72.500) Fairweather ENVELOPE(-61.083,-61.083,-65.017,-65.017) Beardmore ENVELOPE(174.900,174.900,-83.350,-83.350) Wyatt ENVELOPE(-67.686,-67.686,-67.338,-67.338) Goldie ENVELOPE(165.900,165.900,-82.633,-82.633) Byrd Glacier ENVELOPE(160.333,160.333,-80.250,-80.250) Pensacola Mountains ENVELOPE(-58.000,-58.000,-83.500,-83.500) |
institution |
Open Polar |
collection |
Ohio State University (OSU): Knowledge Bank |
op_collection_id |
ftohiostateu |
language |
English |
topic |
Ross Orogen Metavolcanic rocks--Queen Maud Land Antarctica Metasedimentary rocks--Queen Maud Land Damara Orogen |
spellingShingle |
Ross Orogen Metavolcanic rocks--Queen Maud Land Antarctica Metasedimentary rocks--Queen Maud Land Damara Orogen Stump, Edmund On the Late Precambrian-Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Mountains, Antarctica, and a Comparison With Rocks of Similar Age for Southern Africa |
topic_facet |
Ross Orogen Metavolcanic rocks--Queen Maud Land Antarctica Metasedimentary rocks--Queen Maud Land Damara Orogen |
description |
The non-intrusive portion of the late Precambrian-early Paleozoic basement complex in the Queen Maud Mountains, Antarctica, consists of graywacke-shale sequences of the Beardmore Group (Goldie, Duncan, and LaGorce Formations), rhyolite porphyries of the Wyatt Formation, and rhyolite porphyries, minor basalts and carbonate, clastic and volcaniclastic metasedimentary rocks of the Taylor and Fairweather Formations. A model for the evolution of the Ross Orogen between Byrd Glacier and the Pensacola Mountains is presented combining results of this study with published reports from adjacent areas. The deep-sea fan deposits of the Beardmore Group are conformably overlain and intruded by extrusive and hypabyssal portions of the Wyatt Formation. An arc of volcanic islands producing ash-flow tuffs, ash-fall tuffs and lavas, and minor basaltic lavas was active in the early Cambrian. Sediments accumulated in association with the volcanic rocks. All of these rocks were deformed, intruded and metamorphosed to varying degrees during the Ross Orogeny which ended by middle Ordovician. Rocks of the Damara Orogen of southern Africa were probably linearly continuous with the Ross Orogen prior to the breakup of Gondwanaland. A clastic pulse recognized in late Precambrian sediments in the Cape, the Vanrhynsdorp area and the Nama Basin is interpreted as representing the initiation of the Damara Orogeny in South and South West Africa. A comparison of the evolution of the Ross and Damara Orogens concludes that the Cape region in South Africa occupied a tectonic regime transitional between the regime of cratonic collision in South West Africa, where orogeny was sustained from the late Precambrian to the middle Orodovician, and the regime of subduction of oceanic crust beneath a continental margin in Antarctica, where two episodes of sedimentation and deformation occurred. National Science Foundation Grants GV-26652, GV-33767 and OPP74-04897 |
format |
Report |
author |
Stump, Edmund |
author_facet |
Stump, Edmund |
author_sort |
Stump, Edmund |
title |
On the Late Precambrian-Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Mountains, Antarctica, and a Comparison With Rocks of Similar Age for Southern Africa |
title_short |
On the Late Precambrian-Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Mountains, Antarctica, and a Comparison With Rocks of Similar Age for Southern Africa |
title_full |
On the Late Precambrian-Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Mountains, Antarctica, and a Comparison With Rocks of Similar Age for Southern Africa |
title_fullStr |
On the Late Precambrian-Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Mountains, Antarctica, and a Comparison With Rocks of Similar Age for Southern Africa |
title_full_unstemmed |
On the Late Precambrian-Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Mountains, Antarctica, and a Comparison With Rocks of Similar Age for Southern Africa |
title_sort |
on the late precambrian-early paleozoic metavolcanic and metasedimentary rocks of the queen maud mountains, antarctica, and a comparison with rocks of similar age for southern africa |
publisher |
Institute of Polar Studies, The Ohio State University |
publishDate |
1976 |
url |
http://hdl.handle.net/1811/54226 |
long_lat |
ENVELOPE(12.000,12.000,-72.500,-72.500) ENVELOPE(-61.083,-61.083,-65.017,-65.017) ENVELOPE(174.900,174.900,-83.350,-83.350) ENVELOPE(-67.686,-67.686,-67.338,-67.338) ENVELOPE(165.900,165.900,-82.633,-82.633) ENVELOPE(160.333,160.333,-80.250,-80.250) ENVELOPE(-58.000,-58.000,-83.500,-83.500) |
geographic |
Byrd Queen Maud Land Fairweather Beardmore Wyatt Goldie Byrd Glacier Pensacola Mountains |
geographic_facet |
Byrd Queen Maud Land Fairweather Beardmore Wyatt Goldie Byrd Glacier Pensacola Mountains |
genre |
Antarc* Antarctica Byrd Glacier Queen Maud Land |
genre_facet |
Antarc* Antarctica Byrd Glacier Queen Maud Land |
op_relation |
Institute of Polar Studies Report No. 62 Stump, Edmund. 1976. On the Late Precambrian - Early Paleozoic Metavolcanic and Metasedimentary Rocks of the Queen Maud Land, Antarctica, and a Comparison with Rocks of Similar Age for Southern Africa. Institute of Polar Studies Report No. 62, Institute of Polar Studies, The Ohio State University, 212 pages. 0078-415X http://hdl.handle.net/1811/54226 |
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1766275672308711424 |