Mesoproterozoic subduction under the eastern edge of the Kalahari-Grunehogna Craton preceding Rodinia assembly : the Ritscherflya detrital zircon record, Ahlmannryggen (Dronning Maud Land, Antarctica)
Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Precambrian Research 236 (2013): 31–45, doi:10.1016/j.precamres.2013.07.006. The reconst...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/6407 2023-05-15T13:53:14+02:00 Mesoproterozoic subduction under the eastern edge of the Kalahari-Grunehogna Craton preceding Rodinia assembly : the Ritscherflya detrital zircon record, Ahlmannryggen (Dronning Maud Land, Antarctica) Marschall, Horst R. Hawkesworth, Chris J. Leat, Philip T. 2013-07-11 application/pdf https://hdl.handle.net/1912/6407 en_US eng https://doi.org/10.1016/j.precamres.2013.07.006 https://hdl.handle.net/1912/6407 Detrital zircon Geochronology Dronning Maud Land Rodinia Mesoproterozoic Preprint 2013 ftwhoas https://doi.org/10.1016/j.precamres.2013.07.006 2022-05-28T22:59:01Z Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Precambrian Research 236 (2013): 31–45, doi:10.1016/j.precamres.2013.07.006. The reconstruction of the palaeogeography and supercontinent amalgamation processes in the Precambrian is generally guided by the age of magmatic and metamorphic rocks in orogenic belts, which formed along the sutures of colliding continents or smaller terranes (e.g., Wareham et al., 1998; Dalziel et al., 2000). Yet, the investigation and interpretation of these belts becomes increasingly difficult with increasing age of the orogenic cycles, due to metamorphic overprint, fragmentation by subsequent rifting processes, erosive loss, and covering by younger deposits or by ice. An alternative and important recorder of geodynamic processes are clastic sediments that are fed from the eroding orogenic belts and are deposited on stable cratonic platforms, where they may escape erosion and high-grade metamorphism for billions of years. These clastic sediment deposits generally contain abundant detrital zircon, which provides an age record of the eroded orogenic belts, reflecting a large number of rock types. The age spectra of detrital zircon recovered from sedimentary basins can be used to distinguish between different tectonic settings in which the sediments were deposited, such as convergent margins, collisional orogens or extensional settings (von Eynatten & Dunkl, 2012; Cawood et al., 2012). The supercontinent Rodinia formed by convergence and collision of all the major landmasses between 1200 and 950Ma, i.e. in the late Mesoproterozoic (Hoffman, 1991; Li et al., 2008). Key evidence for the collisions is found in the late Mesoproterozoic orogenic belts, which span thousands of kilometres through North and South America, southern Africa, Australia, Asia and East Antarctica. Yet, the paleogeographic reconstruction of Rodinia is still ... Report Antarc* Antarctica Dronning Maud Land East Antarctica Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) East Antarctica Dronning Maud Land Grunehogna ENVELOPE(-2.750,-2.750,-72.033,-72.033) Ahlmannryggen ENVELOPE(-2.500,-2.500,-71.833,-71.833) Ritscherflya ENVELOPE(-9.000,-9.000,-73.000,-73.000) Precambrian Research 236 31 45 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Detrital zircon Geochronology Dronning Maud Land Rodinia Mesoproterozoic |
spellingShingle |
Detrital zircon Geochronology Dronning Maud Land Rodinia Mesoproterozoic Marschall, Horst R. Hawkesworth, Chris J. Leat, Philip T. Mesoproterozoic subduction under the eastern edge of the Kalahari-Grunehogna Craton preceding Rodinia assembly : the Ritscherflya detrital zircon record, Ahlmannryggen (Dronning Maud Land, Antarctica) |
topic_facet |
Detrital zircon Geochronology Dronning Maud Land Rodinia Mesoproterozoic |
description |
Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Precambrian Research 236 (2013): 31–45, doi:10.1016/j.precamres.2013.07.006. The reconstruction of the palaeogeography and supercontinent amalgamation processes in the Precambrian is generally guided by the age of magmatic and metamorphic rocks in orogenic belts, which formed along the sutures of colliding continents or smaller terranes (e.g., Wareham et al., 1998; Dalziel et al., 2000). Yet, the investigation and interpretation of these belts becomes increasingly difficult with increasing age of the orogenic cycles, due to metamorphic overprint, fragmentation by subsequent rifting processes, erosive loss, and covering by younger deposits or by ice. An alternative and important recorder of geodynamic processes are clastic sediments that are fed from the eroding orogenic belts and are deposited on stable cratonic platforms, where they may escape erosion and high-grade metamorphism for billions of years. These clastic sediment deposits generally contain abundant detrital zircon, which provides an age record of the eroded orogenic belts, reflecting a large number of rock types. The age spectra of detrital zircon recovered from sedimentary basins can be used to distinguish between different tectonic settings in which the sediments were deposited, such as convergent margins, collisional orogens or extensional settings (von Eynatten & Dunkl, 2012; Cawood et al., 2012). The supercontinent Rodinia formed by convergence and collision of all the major landmasses between 1200 and 950Ma, i.e. in the late Mesoproterozoic (Hoffman, 1991; Li et al., 2008). Key evidence for the collisions is found in the late Mesoproterozoic orogenic belts, which span thousands of kilometres through North and South America, southern Africa, Australia, Asia and East Antarctica. Yet, the paleogeographic reconstruction of Rodinia is still ... |
format |
Report |
author |
Marschall, Horst R. Hawkesworth, Chris J. Leat, Philip T. |
author_facet |
Marschall, Horst R. Hawkesworth, Chris J. Leat, Philip T. |
author_sort |
Marschall, Horst R. |
title |
Mesoproterozoic subduction under the eastern edge of the Kalahari-Grunehogna Craton preceding Rodinia assembly : the Ritscherflya detrital zircon record, Ahlmannryggen (Dronning Maud Land, Antarctica) |
title_short |
Mesoproterozoic subduction under the eastern edge of the Kalahari-Grunehogna Craton preceding Rodinia assembly : the Ritscherflya detrital zircon record, Ahlmannryggen (Dronning Maud Land, Antarctica) |
title_full |
Mesoproterozoic subduction under the eastern edge of the Kalahari-Grunehogna Craton preceding Rodinia assembly : the Ritscherflya detrital zircon record, Ahlmannryggen (Dronning Maud Land, Antarctica) |
title_fullStr |
Mesoproterozoic subduction under the eastern edge of the Kalahari-Grunehogna Craton preceding Rodinia assembly : the Ritscherflya detrital zircon record, Ahlmannryggen (Dronning Maud Land, Antarctica) |
title_full_unstemmed |
Mesoproterozoic subduction under the eastern edge of the Kalahari-Grunehogna Craton preceding Rodinia assembly : the Ritscherflya detrital zircon record, Ahlmannryggen (Dronning Maud Land, Antarctica) |
title_sort |
mesoproterozoic subduction under the eastern edge of the kalahari-grunehogna craton preceding rodinia assembly : the ritscherflya detrital zircon record, ahlmannryggen (dronning maud land, antarctica) |
publishDate |
2013 |
url |
https://hdl.handle.net/1912/6407 |
long_lat |
ENVELOPE(-2.750,-2.750,-72.033,-72.033) ENVELOPE(-2.500,-2.500,-71.833,-71.833) ENVELOPE(-9.000,-9.000,-73.000,-73.000) |
geographic |
East Antarctica Dronning Maud Land Grunehogna Ahlmannryggen Ritscherflya |
geographic_facet |
East Antarctica Dronning Maud Land Grunehogna Ahlmannryggen Ritscherflya |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica |
op_relation |
https://doi.org/10.1016/j.precamres.2013.07.006 https://hdl.handle.net/1912/6407 |
op_doi |
https://doi.org/10.1016/j.precamres.2013.07.006 |
container_title |
Precambrian Research |
container_volume |
236 |
container_start_page |
31 |
op_container_end_page |
45 |
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1766258249140535296 |